Decoding error codes bk state. On-board computer State X1-G - A reliable friend and assistant to the car owner

Multitronics on-board computer error codes must be known when computer diagnostics car. This computer model is installed both in domestic and imported machines. This device has more than 190 different functions. Digital monitor, can diagnose multiple vehicles at once.

If this device is used, you will constantly be aware of all the problems of the car, it even analyzes and controls the quality of the fuel being poured. But what if the computer gives an error? What is wrong and what is broken? Further in the article we will describe in detail the errors issued by the on-board device.

On-board computer error codes Multitronics are 5 characters that always start with the letter "P". Now let's describe the codes in order. If error 0030 is displayed on the screen, then this means that the circuit from the oxygen sensor is broken.

Further 0031 - shorts the circuit between the same elements, until neutralization. 0032 - the same elements only shorten the body network, to neutralization. 0036 - also a break in the above system, after neutralization. 0037 - contact with the mass of the auto circuit after neutralization. 0038 - has a short on the body after neutralization.

List of errors and designation

• 0102 – amount of air, impulse min;
• 0103 - amount of air, impulse max;
• 0112 – t, impulse min;
• 0113 - t, impulse max;
• 0116 - t coolant, invalid pulse;
• 0117 - t coolant, pulse min;
• 0118 - coolant t, impulse max;
• 0122 - throttle, impulse min;
• 0123 - throttle, impulse max;
• 0130 - oxygen element before neutralization, does not work;
• 0131 - oxygen element before neutralization, impulse min;
• 0132 - oxygen element before neutralization, impulse max;
• 0133 - oxygen element before neutralization, slow reaction to a change in the combustible mixture;
• 0134 - system: oxygen element - neutralizer - does not work;
• 0136 - oxygen element after neutralization. does not work until neutralized;
• 0137 - oxygen element after neutralization, impulse min;
• 0138 - oxygen element after neutralization, impulse max;
• 0140 - system: oxygen element - neutralizer - does not work after neutralization;
• 0141 - oxygen element after neutralization. the heater does not work;
• 0171 - poor fuel supply;
• 0172 - strong fuel supply;
• 0201 - injector of the 1st chamber, the system is interrupted;
• 0202 - injector of the 2nd chamber, the system is broken;
• 0203 - injector of the 3rd chamber, the system is broken;
• 0204 - injector of the 4th chamber, the system is broken;
• 0217 – ;
• 0230 - the fuel pump relay system is not working;
• 0261 - injector of the 1st cylinder, short;
• 0263 - The 1st chamber injector software does not work;
• 0264 - injector of the 2nd chamber, short;
• 0266 - The 2nd cylinder injector software does not work;
• 0267 - injector of the 3rd chamber, short;
• 0269 - The 3rd chamber injector software does not work;
• 0270 - injector of the 4th chamber, short;
• 0262 - injector of the 1st chamber, short;
• 0265 - injector of the 2nd chamber, short;
• 0268 - injector of the 3rd chamber, short;
• 0271 - injector of the 4th chamber, short;
• 0272 - the 4th camera injector driver does not work;
• 0300 - failures in the detonation of the combustible mixture;
• 0301 - failures in the detonation of the combustible mixture, cylinder 1;
• 0302 - failures in the detonation of the combustible mixture, cylinder 2;
• 0303 - failures in the detonation of the combustible mixture, cylinder 3;
• 0304 - failures in the detonation of the combustible mixture, cylinder 4;
• 0326 - mixture detonation element, the signal is not allowed;
• 0327 - mixture detonation element, min signal;
• 0328 - mixture detonation element, max signal;
• 0335 - the crankshaft element system is not working;
• 0336 - crankshaft element circuit signal is not allowed;
• 0337 - crankshaft element system, short to ground;
• 0338 - crankshaft element system, breakage;
• 0342 – phase element, min signal;
• 0343 - phase element, signal max;
• 0346 - phase element, signal is not allowed;
• 0351 - 1st cylinder (1-4);
• 0352 - open in the ignition system of the 2nd cylinder (2-3);
• 0353 - open in the ignition system of the 3rd cylinder;
• 0354 - open in the ignition system of the 4th cylinder;
• 0363 - ignition is not constant;
• 0422 - the converter is not effective;
• 0441 - the amount of air when removing fuel vapors is not correct;
• 0444 - breakage of the adsorber system;
• 0445 - the adsorber system is short;
• 0480 - open circuit in the fan circuit;
• 0481 - fan 2 does not work correctly;
• 0500 - the speed control element is faulty;
• 0506 - too low frequency idle move;
• 0507 - the idle speed is too high;
• 0511 - idle system does not work;
• 0560 - the charge of the on-board system is invalid;
• 0562 - the charge of the on-board system is low;
• 0563 - the charge of the on-board system is high;
• 0601 - ROM error;
• 0615 - starter circuit is broken;
• 0616 (0617) - the starter is short;
• 0627 - fuel pump, open circuit;
• 0628 (0629) - fuel pump, short;
• 0645 - air conditioning, open circuit;
• 0646 (0647) - air conditioner, short;
• 0650 - fault indicator, break in the system;
• 0654 - tachometer, the system does not work;
• 0685 - main relay, break in the system;
• 0686 (0687) - main relay, short;
• 0691 (0692) - relay, short;
• 1102 - R of the oxygen element is low;
• 1115 - the oxygen cell system does not work;
• 1123 - supersaturated mixture at idle;
• 1124 - lean mixture at idle;
• 1301 - not permanent unacceptable detonation of the 1st chamber;
• 1302 - not permanent invalid detonation of the 2nd chamber;
• 1303 - not permanent unacceptable detonation of the 3rd chamber;
• 1304 - not permanent unacceptable detonation of the 4th chamber;
• 1500 - the fuel pump relay system is broken;
• 1501 - the pump has a short to ground;
• 1509 - the load on the idle controller circuit has been exceeded;
• 1606 - an element of roughness of the road, the signal is invalid;
• 1617 - an element of roughness of the road, signal min;
• 1617 - an element of roughness of the road, signal max;
• 2301 - ignition of the 1st cylinder breaks;
• 2303 - ignition of the 2nd cylinder breaks;
• 2305 - ignition of the 3rd cylinder breaks;
• 2307 - I pierces the ignition of the 4th cylinder.

DIAGNOSTICS OF TROUBLE CODES

Diagnostic Trouble Code (DTC) Type Definitions

Emission related fault codes harmful substances
- type A
The controller illuminates the Malfunction Indicator Lamp (MIL) when a malfunction is detected during diagnostics.
Action Taken When the DTC Sets - Type E
The controller turns on the Malfunction Indicator Lamp (MIL) during the next ignition cycle, at which a malfunction is detected a second time during the diagnostic process.
Conditions for Clearing the DTC/Turning Off the Malfunction Indication - Type A or Type E
1. The controller turns off the Malfunction Indicator Lamp (MIL) after 3 consecutive ignition cycles in which no fault is detected by diagnostics.
2. The current DTC "Last Check Failed" is cleared after the diagnosis is successful.
3. Using a scan tool, turn off the MIL and clear the DTC.

DTCs not related to the emission of harmful substances
Action Taken When the DTC Sets - Type C
1. The controller writes a fault code to memory when a fault is detected during the diagnostic process.
2. As soon as an error occurs, the "Complete soon" indicator lights up. Maintenance car" (SVS).
3. If the vehicle is equipped with a driver information center, a message may be displayed on the vehicle.
Conditions for Clearing DTCs - Type C
1. Faults found during the last previous diagnosis or active fault codes are cleared if no faults are found during the diagnosis.
2. Use a scan tool to clear the DTC.

Diagnostic Trouble Codes

Diagnostic Trouble Code (DTC) P0008 or P0009
DTC Description

DTC P0008: Bank 1 Engine Position System Performance

DTC P0009: Bank 2 Engine Position System Performance

Description of circuits / systems

Controller electronic system engine control (ECM) checks the mismatch between the positions of both camshafts one row of cylinders and crankshaft. Mismatch is possible either at the guide sprocket of each of the rows of cylinders, or at the crankshaft. Having determined the position of both camshafts of the engine cylinder bank, the ECM compares the obtained values ​​​​with the control ones. The ECM will set a DTC if both determined values ​​for one engine bank exceed the calibrated threshold in the same direction.

Conditions for Running the DTC

1. DTCs P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P039 2, P0393, P2088, P2089, P2090 , P2091, P2092, P2093, P2094 and P2095 are not installed.

2. The engine is running.

3. The ECM has determined the camshaft positions.

4. DTCs P0008 and P0009 are set continuously if the above conditions are met.

The ECM determines that the position of both camshafts of any engine bank is out of alignment with the position of the crankshaft for more than 4 seconds.

Action Taken When the DTC Sets

DTCs P0008 and P0009 are type E.
Diagnostic Information

1. Inspect the engine for recent engine mechanical repairs. Improperly installed secondary drive circuit camshaft cause this DTC to appear.

2. One faulty camshaft actuator or valve cannot cause this DTC. This diagnostic algorithm is designed to detect a mismatch between the primary intermediate sprocket and the secondary camshaft drive circuit, or a mismatch between the primary intermediate sprocket and crankshaft. Any of these conditions can cause a phase mismatch between the cams of both shafts of the same bank of cylinders on the same number degrees.

Circuit/System Testing

1. Clear DTCs with a scan tool.

2. Allow the engine to warm up to normal operating temperature.

3. Let the engine run for idling for 10 minutes or until the DTC sets. Use a scan tool to get information about trouble codes; DTCs P0008 and P0009 should not set.

Circuit / system test

1. Inspect the camshaft drive chains for wear or misalignment.
If a malfunction is found in the camshaft drive circuits or tensioners, refer to "Camshaft Drive Circuit Components", Part 1C2, " Mechanical engine HFV6 3.2 L.

2. Check if the pulse sensor is correctly installed on the crankshaft.
If you find a malfunction related to the crankshaft, you should refer to the section " Crankshaft and main bearings", Part 1C2, "Mechanical part of the HFV6 3.2 L engine."

Diagnostic Trouble Codes (DTCs) P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094 or P2095
DTC Description
DTC P0010: Intake Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Bank 1
DTC P0013: Bank 1 Exhaust Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit
DTC P0020: Intake Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Bank 2
DTC P0023: Exhaust Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Bank 2
DTC P2088: Intake Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Low Voltage
DTC P2089: Intake Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit High Voltage
DTC P2090: Exhaust Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Low Voltage
DTC P2091: Exhaust Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit High Voltage
DTC P2092: Intake Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Low Voltage
DTC P2093: Intake Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit High Voltage
DTC P2094: Exhaust Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit Low Voltage
DTC P2095: Exhaust Camshaft Timing Control (CMP) Actuator Solenoid Control Circuit High Voltage

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

The ignition voltage is supplied directly to the camshaft control valve. The ECM controls the operation of the valve by grounding the control circuit using a solid state device, the so-called. drivers. The device is equipped with a feedback circuit that increases the voltage. The ECM can detect an open control circuit, a short to ground, or a short to voltage by monitoring the feedback voltage.

Conditions for Running the DTC

1. Engine speed is above 80 rpm.

3. The ECM has commanded the camshaft timing actuator solenoid on and off at least once during an ignition cycle.

4. DTCs P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094 and P2095 are set continuously when the above conditions are met for more than 1 second.

Conditions for setting the DTC.
P0010, P0013, P0020, P0023
The ECM detected an open in the CMP actuator solenoid circuit for more than 4 seconds when commanding the solenoid off.
P2088, P2090, P2092, P2094
The ECM detected a short to ground on the CMP Actuator Solenoid circuit for more than 4 seconds when commanding the solenoid off.
P2089, P2091, P2093, P2095
The ECM detected a short to voltage on the CMP actuator solenoid circuit for more than 4 seconds when commanded to turn on the solenoid.

1. The ECM detected an open, short to ground, or short to voltage (B+) in the CMP actuator solenoid circuit when commanding the solenoid off.

2. The condition is met for more than 4 seconds.

Action Taken When the DTC Sets

Conditions for Clearing the DTC

DTCs P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, and P2095 are type E.

Circuit/System Testing

1. Warm up the engine to normal operating temperature, raise the speed to 2000 rpm for 10 seconds. DTCs P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094 and P2095 must not be set.

2. If the vehicle has successfully passed the circuit/system test, then the conditions required for the diagnosis should be provided. It is also possible to provide the conditions recorded in the status/fault log data records.

Circuit / system test

If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If no faults are found during circuit testing and there is an open ignition circuit fuse, then all components connected to the ignition circuit should be checked and, if necessary, replaced.

3. Turn off the ignition, connect a test lamp between the contact of the control circuit and the supply voltage (B+).

If the test lamp stays on, test the control circuit for a short to ground. If the circuit is normal, replace the ECM.
If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If no fault is found during the circuit test, replace the ECM.

5. Ignition on, test for 2.0-3.0 volts between the control circuit terminal and a good ground.
If voltage is not within the specified range, replace the ECM.

1.
Component testing

1. Measure the resistance between the contacts of the camshaft timing control valve, which should be 7-12 ohms.

Diagnostic Trouble Codes (DTCs) P0011, P0014, P0021, or P0024

DTC Description

DTC P0011: Intake Camshaft Position (CMP) System Performance Bank 1
DTC P0014: Bank 1 Exhaust Camshaft Position (CMP) System Performance
DTC P0021: Bank 2 Intake Camshaft Position (CMP) System Performance
DTC P0024: Bank 2 Exhaust Camshaft Position (CMP) System Performance

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

The variable valve timing actuator system allows the ECM to change the valve timing of the camshafts while the engine is running. The camshaft timing actuator valve signal from the ECM is a pulse width signal. The controller manages the actuator valve cycle by adjusting the duration of the valve on. The valve timing actuator controls the increase or decrease in phase for each camshaft. The valve timing actuator controls the flow of oil that supplies pressure to increase or decrease the phases of the camshafts.

Conditions for Running the DTC

1. Tests P0010, P0013, P0020, P0023, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368 must pass before the ECM reports DTCs P0011, P0014, P0021, or P0024 , P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093, P2094 and P2095.

2. DTCs P0016, P0017, P0018, P0019, P0335, P0336 and P0338 do not set.

3. Engine speed above 500 rpm.

4. The engine must be accelerated so that the variable valve timing drive system is commanded to move from the park position to the desired phase position. This process is a camshaft control cycle. There should be 4-10 cycles of camshaft control in total with a duration of being in the phase shift position for at least 2.5 seconds in each cycle.

5. Engine runs for approximately 1.8 seconds.

6. DTCs P0011, P0014, P0021 and P0024 are set continuously if the above conditions are met for more than 1 second.

Conditions for setting the DTC.

1. The ECM detects a difference between the desired and actual camshaft angle that is greater than 5 degrees.

1. The ECM detects a difference between the actual and fixed camshaft angle that is greater than 1 degree. This condition persists for more than 4 seconds.

Action Taken When the DTC Sets

Conditions for Clearing the DTC

DTCs P0011, P0014, P0021, and P0024 are type E.

Diagnostic Information

1. The condition of the engine oil has a decisive effect on the operation of the camshaft timing control drive system.

2. This DTC may be set due to low oil level. The engine may require an oil change. You can also check the Engine Oil Life parameter with a scan tool.

3. Inspect the engine for recent mechanical repairs to the engine. This DTC may be caused by incorrect installation camshaft, camshaft control actuator or camshaft drive circuit.

Circuit/System Testing

Important: The engine oil level and pressure are critical to the correct operation of the camshaft timing drive system. Before proceeding with this diagnosis, it is necessary to verify that the required oil level and pressure are present.

1. Ignition on, obtain DTC information with a scan tool. Verify that none of the following DTCs are set. DTC P0016, P0017, P0018, P0019, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P0521, P0522 or P0523.

If any of the listed DTCs is set, refer to the appropriate code information for further diagnosis.

2. The engine is idling. Command the suspected camshaft actuator to move from 0 to 40 degrees and back to zero while observing the appropriate CMP angle deviation parameters with a scan tool. The deviation of the CMP angle must be within 2 degrees for each position as instructed.

Circuit / system test

1. Ignition OFF, disconnect the harness connector from the appropriate camshaft timing actuator valve.

2. Ignition on, verify that a test lamp is off between the ignition circuit terminal and a good ground.

Important: The ignition circuit supplies voltage to other components. It is necessary to ensure that all circuits are checked for a short to ground and all components that enter the ignition circuit are checked for a short.

If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If no faults are found during circuit testing and there is an open ignition circuit fuse, then all components connected to the ignition circuit should be checked and, if necessary, replaced.

3. Turn off the ignition, connect a test lamp between contact 2 of the control circuit and B +.

4. Ignition on, use a scan tool to command the valve timing control valve "on." and "off" The control lamp should light up and go out in accordance with the given commands.

If the test lamp stays on, test the control circuit for a short to ground. If the circuit is normal, replace the ECM.

If the test lamp does not illuminate, test the control circuit for a short to voltage or an open/high resistance. If no fault is found during the circuit test, replace the ECM.

5. Remove the camshaft camshaft control valve. Inspect the camshaft camshaft control valve and installation location and check for the following faults:

- Torn, clogged, improperly installed or missing camshaft camshaft control valve strainers.
- Leaks of engine oil at the seating surfaces of the seals of the valve for controlling the valve timing of the camshafts. Make sure that there are no scratches on the seating surfaces of the camshaft timing actuator valve.
- Oil leakage at the camshaft camshaft control valve connector.

If a malfunction is found, replace the camshaft camshaft control valve.

6. If no fault is found when testing all circuits / connections, then check or replace the camshaft camshaft control valve.

Component testing

1. Test for a resistance of 7-12 ohms between the contacts of the camshaft timing control valve.
If the resistance is not within the specified range, replace the camshaft timing control valve

2. Check the resistance between each of the contacts and the camshaft camshaft control valve body. The resistance must be infinite.
If less resistance, replace the camshaft camshaft control valve.

Diagnostic Trouble Codes (DTCs) P0016, P0017, P0018, or P0019

DTC Description

DTC P0016: Crankshaft Position (CKP) Correspondence to Intake Camshaft Position (CMP) Bank 1
DTC P0017: Bank 1 Crankshaft Position (CKP) Correspondence to Exhaust Camshaft Position (CMP)
DTC P0018: Crankshaft Position (CKP) Correspondence to Intake Camshaft Position (CMP) Bank 2
DTC P0019: Crankshaft Position (CKP) Correspondence to Exhaust Camshaft Position (CMP) Bank 2

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

The variable valve timing actuator system allows the ECM to change the valve timing of the camshafts while the engine is running. The camshaft timing actuator valve signal from the ECM is a pulse width signal. The controller manages the actuator valve cycle by adjusting the duration of the valve on. The valve timing actuator controls the increase or decrease in phase for each camshaft. The valve timing actuator controls the flow of oil that supplies pressure to increase or decrease the phases of the camshafts.
The ignition voltage is supplied directly to the camshaft control valve. The ECM controls the operation of the valve by grounding the control circuit using a solid state device, the so-called. drivers. The ECM compares the position (rotation angle) of the camshaft with the position of the crankshaft.

Conditions for Running the DTC

1. Before the ECM can set DTCs P0016, P0017, P0018, or P0019, DTCs P0010, P0011, P0013, P0014, P0020, P0021, P0023, P0024, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093, P2094 and P2 095.

2. Engine running for more than 5 seconds.

3. Engine coolant temperature within 0-95°C (32-203°F).

4. The calculated engine oil temperature is below 120°C (248°F).

5. DTCs P0016, P0017, P0018 and P0019 are set continuously if the above conditions are met for approximately 10 minutes.

Conditions for setting the DTC.

1. The ECM detects one of the following faults:

The ECM detects a misalignment between the camshaft and crankshaft positions.

The camshaft is too far ahead of the crankshaft.

The camshaft is too far behind the crankshaft.

2. The ECM detects a difference between the actual and fixed camshaft angle that is greater than 1 degree.

3. This condition persists for more than 4 seconds.

Action Taken When the DTC Sets

Conditions for Clearing the DTC

DTCs P0016, P0017, P0018, and P0019 are type E.

Diagnostic Information

1. Inspect the engine for recent engine mechanical repairs. This DTC can be caused by improper installation of the camshaft, camshaft actuator, camshaft sensor, crankshaft sensor, or camshaft drive circuit.

2. This fault code may appear if the valve timing actuator is in the position corresponding to the maximum lead or lag.

3. The presence of DTCs P0008 and P0009 together with P0016, P0017, P0018 and P0019 indicates a possible malfunction of the primary camshaft drive circuit and a mismatch between both intermediate sprockets and the crankshaft. It is also possible that the crankshaft pulse sensor is misaligned and does not match top dead point (TDC) of the crankshaft.

4. By comparing the desired and actual camshaft angle values ​​with a scan tool before issuing a DTC, it can be determined whether the malfunction is related to one camshaft, one bank of cylinders, or is caused by a violation of the primary synchronization with the crankshaft.

Circuit / system test

1. Ignition on, obtain DTC information with a scan tool. Verify that none of the following DTCs are set. DTC P0010, P0013, P0020, P0023, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093 , P2094 or P2095.
If any of the listed DTCs is set, refer to the appropriate code information for further diagnosis.

2. Let the engine idle at normal operating temperature for 10 minutes. DTCs P0016, P0017, P0018 or P0019 must not be set.

If DTCs are set, check the following:

Correct installation of camshaft sensors.
-Correct installation of the crankshaft sensor.
- Condition of the camshaft drive chain tensioner.
- Incorrectly installed camshaft drive chain.
- Excessive free play of the camshaft drive chain.
- The camshaft drive chain is skipping teeth.
- The crankshaft pulse sensor is offset from the top dead center of the crankshaft.

3. If the vehicle has successfully passed the circuit/system test, then the conditions required for the diagnosis should be provided. It is also possible to provide the conditions recorded in the status/fault log data records.

Diagnostic Trouble Codes (DTCs) P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057 or P0058
DTC Description

DTC P0030: HO2S Heater Control Circuit Bank 1 Sensor 1
DTC P0031: HO2S Heater Control Circuit Bank 1 Sensor 1 Low Voltage
DTC P0032: HO2S Heater Control Circuit Bank 1 Sensor 1 High Voltage
DTC P0036: HO2S Heater Control Circuit Bank 1 Sensor 2
DTC P0037: HO2S Heater Control Circuit Low Voltage Bank 1 Sensor 2
DTC P0038: HO2S Heater Control Circuit Bank 1 Sensor 2 High Voltage
DTC P0050: HO2S Heater Control Circuit Bank 2 Sensor 1
DTC P0051: HO2S Heater Control Circuit Bank 2 Sensor 1 Low Voltage
DTC P0052: HO2S Heater Control Circuit Bank 2 Sensor 1 High Voltage
DTC P0056: HO2S Heater Control Circuit Bank 2 Sensor 2
DTC P0057: HO2S Heater Control Circuit Bank 2 Sensor 2 Low Voltage
DTC P0058: HO2S Heater Control Circuit Bank 2 Sensor 2 High Voltage

Perform a Diagnostic System Check before using this diagnostic procedure.

Circuit Description

1. Signal circuit

2. Low reference circuit

3. Ignition voltage circuit

4. Heater control circuit

Conditions for Running the DTC
P0030, P0031, P0032, P0050, P0051, P0052

4. DTCs are issued continuously if the above conditions are met for 1 second.
P0036, P0037, P0038, P0056, P0057, P0058

1. Ignition voltage within 10.5-18V.
2. Engine speed is above 80 rpm.
3. The oxygen sensor (HO2S) heater is commanded on and off at least once per ignition cycle.
4. The control oxygen sensor (HO2S) is at operating temperature.
5. DTCs are issued continuously if the above conditions are met for 1 second.

Conditions for Setting the DTC

P0030, P0036, P0050, and P0056 The ECM detects an open in the oxygen sensor (HO2S) heater circuits when the heater is commanded to turn off. The condition is met for more than 4 seconds.
P0031, P0037, P0051, and P0057 The ECM detects a short to ground on the oxygen sensor (HO2S) heater circuits when the heater is commanded to turn off. The condition is met for more than 4 seconds.
P0032, P0038, P0052, and P0058 The ECM detects a short to voltage on the oxygen sensor (HO2S) heater circuits when the heater is commanded on. The condition is met for more than 4 seconds.

Action Taken When the DTC Sets

DTCs P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057 and P0058 are type E.

Diagnostic Information

1. If the fault is intermittent, move the relevant harnesses and connectors while the engine is running while monitoring the circuit condition of the affected component with a scan tool. The circuit status parameter changes from OK (Good) or Indeterminate (Not defined) to Fault (Faulty) if this condition is associated with the circuit or connector. The control module (ODM) information is in the module data list.

2. An open in the control oxygen sensor heater circuit fuse may be connected to a heating element in one of the sensors. This fault may not be present until the sensor has been operated for some time. If there is no fault in the heater circuit, then use a digital multimeter to check the current in each of the heaters to determine if the open in the fuse is caused by the heating element of one of the heaters. Check if the probe lead or harness is in contact with the exhaust system components.

Circuit/System Testing

The engine is idling at operating temperature for at least 30 seconds. Get information about the DTC. DTCs P0030, P0031, P0032, P0036, P0037, P0038, P0050, P0051, P0052, P0056, P0057 and P0058 should not set.

Circuit / system test

1. Ignition OFF, disconnect the harness connector at the appropriate heated oxygen sensor (HO2S).

2. Ignition on, verify that the test lamp illuminates between the ignition circuit terminal and a good ground.
Important: The ignition circuit supplies voltage to other components. It is necessary to ensure that all circuits are checked for a short to ground and all components that enter the ignition circuit are checked for a short.
If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If no faults are found during the circuit testing and there is an open ignition circuit fuse, then all components connected to the ignition circuit 1 should be checked and replaced if necessary.
3. Turn off the ignition, connect a test lamp between the contact of the heater control circuit and the "B +" voltage. The control lamp should not light up.
If the test lamp stays on, test the control circuit for a short to ground. If no fault is found during circuit/connection testing, replace the ECM.
Important: The HO2S heater control circuit is connected to a voltage source inside the ECM. Normal for the control circuit is a voltage in the range of 2.0 - 3.0 volts.
4. Turn on the engine at idle and check if the control lamp is on continuously or flashes.
If the test lamp remains off, test the control circuit for a short to live or an open/high resistance. If no fault is found during circuit/connection testing, replace the ECM.
5. Ignition on, test for 2.0 - 3.0 volts between control circuit terminal "D" and ground.
If voltage is not within the specified range, replace the ECM.
6. If no fault is found when testing all circuits / connections, then check or replace oxygen sensor HO2S.

Component testing

1. Ignition OFF, disconnect the harness connector at the appropriate oxygen sensor (with electric heater) (HO2S).

2. Check the resistance of the oxygen sensor heater, which should be 3-35 ohms.
If the resistance is not within the specified range, replace the oxygen sensor.

Diagnostic Trouble Code (DTC) P0040 or P0041

DTC Description

DTC P0040: HO2S Signals Swapped Banks 1 & 2 Sensor 1
DTC P0041: HO2S Signals Swapped Banks 1 & 2 Sensor 2

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

The heated oxygen sensor (HO2S) heater reduces the time it takes for the sensor to warm up to operating temperature and maintains that temperature during extended periods of idling. When the ignition is turned on, ignition voltage is applied directly to the sensor heater. Initially, when the sensors are cold, the ECM controls the operation of the heater by periodically closing the control circuit to ground. By controlling the rate at which the sensors heat up, the chances of the sensors being exposed to thermal shock, which is possible due to condensation buildup on the sensors, are eliminated. After a predetermined period of time has elapsed, the ECM will command the permanent on heaters. After the sensor reaches operating temperature, the ECM may periodically close the control circuit to ground to maintain the desired temperature.
The ECM controls the operation of the heater by grounding the control circuit using a solid-state device, the so-called. drivers. This device is equipped with a feedback circuit that increases the voltage. The ECM can detect an open control circuit, a short to ground, or a short to voltage by monitoring the feedback voltage.

The control oxygen sensor uses the following circuits:

1. Signal circuit
2. Low reference circuit
3. Ignition voltage circuit
4. Heater control circuit

Conditions for Running the DTC

P0040 or P0041

Ignition voltage within 10.5-18 V.
-Engine speed above 80 rpm.
- The oxygen sensor heater (HO2S) is commanded on and off at least once per ignition cycle.
- DTCs are issued continuously if the above conditions are met for 1 second.

Conditions for setting the DTC.

P0040 or P0041
The "Oxygen Sensors (HO2S) Signals Swapped" DTC is set if the ECM detects that the HO2S signal voltages are in the opposite direction as commanded.

Action Taken When the DTC Sets

Conditions for Clearing the DTC/MIL

DTCs P0040 and P0041 are type E.

Diagnostic Information

o 1. If the fault is intermittent, move the relevant harnesses and connectors while the engine is running while monitoring the circuit condition of the affected component with a scan tool. If the circuit status parameter changes from OK or Indeterminate to Fault, there is a problem with the circuit or connector. The control module (ODM) information is in the module data list.
o
o 2. An open in the control oxygen sensor heater circuit fuse may be related to the heater element in one of the sensors. This fault may not be present until the sensor has been operated for some time. If there is no fault in the heater circuit, then use a digital multimeter to check the current in each of the heaters to determine if the open in the fuse is caused by the heating element of one of the heaters. Check if the probe lead or harness is in contact with the exhaust system components.

Diagnostic Trouble Code (DTC) P0053 or P0059
DTC Description

DTC P0053: Oxygen Sensor (HO2S) Heater Resistance Bank 1 Sensor 1
DTC P0041: Oxygen Sensor (HO2S) Heater Resistance Bank 2 Sensor 1

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

Oxygen sensors with electric heater are used for fuel control and post catalytic converter control. Each oxygen sensor compares the oxygen content of the ambient air with the oxygen content of the exhaust. The oxygen sensor must be at operating temperature in order to produce the correct voltage signal. A heating element inside the oxygen sensor (HO2S) shortens the time it takes for the sensor to reach operating temperature. Voltage is supplied to the heater through a fuse through the ignition circuit. When the engine is running, ground is supplied to the heater through the low level oxygen sensor (HO2S) heater circuit, through the low level driver in the controller. The controller issues a command to turn the heater on and off in order to maintain the temperature of the oxygen sensor (HO2S) within a certain range.
The controller determines the temperature by measuring the current flowing through the heater and calculating the resistance. Based on the resistance in the controller, the temperature of the sensor is determined. The sensors use pulse-width modulation (PWM) to control the operation of the heater. The controller calculates the resistance of the heater during a cold start of the engine. This diagnostic procedure is performed only once per ignition cycle. If the controller detects that the calculated heater resistance is outside the expected range, these DTCs are issued.

Conditions for Running the DTC

o 1. DTCs P0112, P0113, P0117, P0118 are not set.
o 2. The engine is running.
o 3. Ignition off for more than 10 hours.
o 4. Engine coolant temperature (ECT) sensor parameter at engine start is between -30°C and +45°C (-22°F and +113°F).
o 5. The difference between the parameters of the ECT sensor and the air temperature sensor during intake manifold(IAT) less than 8°C (14°F) when starting the engine.
o 6. DTCs P0053 and P0059 are issued once per driving cycle if the above conditions are met.

Conditions for setting the DTC.

P0053 and P0059
The controller detects that the low control circuit of the associated HO2S heater is out of range when the engine is started.

Action Taken When the DTC Sets

DTCs P0053 and P0059 are type A.

Conditions for Clearing the DTC/MIL
DTCs P0053 and P0059 are type A.

Circuit/System Testing

o 1. Warm up the engine to operating temperature. Engine running, observe the HO2S heater parameter with a scan tool. The value should vary from approximately 2 A to just over 1 A.
o
o 2. With the engine running at operating temperature, observe the HO2S heater parameter with a scan tool and wiggle the related wiring and connectors.
o If the parameter changes with this exposure, repair the wiring harness or connector.

Circuit / system test

14. 1. Ignition OFF, disconnect the harness connector from the appropriate HO2S oxygen sensor.
15. 2. Ignition ON, verify that a test lamp illuminates when connected between the "B+" voltage circuit terminal and a good ground.
16. If the test lamp does not illuminate, test the "B+" voltage circuit for a short to ground or an open/high resistance. If the circuits test normal but the "B+" fuse is blown, replace the HO2S.
17. 3. Ignition OFF, verify that the test lamp is off between the low control circuit terminal of the appropriate HO2S and the "B+" voltage circuit.
18. If the test lamp is on, test the low control circuit for a short to ground.
19. 4. Connect a test lamp between the appropriate HO2S heater low control circuit terminal and the "B+" voltage circuit terminal.
20. 5. With the engine running, the warning lamp should be on or flashing.
21. If the test lamp does not illuminate or flash, test the low control circuit for a short to voltage and an open/high resistance. If the circuit is good, replace the controller.
22. Ignition OFF, connect a 30A fused jumper wire between the "B+" circuit terminal and the heater low control circuit on the appropriate HO2S oxygen sensor.
23. 6. With the engine running, use a scan tool to verify that the appropriate HO2S heater setting reads 0.0A.
24. If the scan tool does not read 0.0 amps, test the heater B+ circuit and the low control circuit for resistance greater than 3 ohms. If the circuit is good, replace the controller.
25. 7. If all circuits test normal, replace the appropriate HO2S sensor.

Diagnostic Trouble Code (DTC) P0068
DTC Description
DTC P0068: Throttle Air Flow Parameters

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

The Engine Control Module (ECM) uses the following information to calculate the expected air flow rate:
o Throttle position sensor (TP).
o Intake air temperature (IAT).
o Engine RPM.

Conditions for Running the DTC

o DTCs P2101 or P2119 are not set.
o The engine is running.
o DTC P0068 is set continuously when the above conditions are met.

Conditions for setting the DTC.

The ECM detects that the throttle position and indicated engine load do not match the expected load and throttle position for less than 1 second.

Action Taken When the DTC Sets

Conditions for Clearing the DTC/MIL

DTC P0068 is type A.

Circuit / system test

32. 1. Check the following:
 No cracks, kinks, and secure vacuum hose connections as shown on the emission control label exhaust gases car.
 Carefully check the hoses for leaks and blockages.
 Air leakage at the throttle body mounting area and intake manifold sealing surfaces.

33. 2. Check the throttle body for the following faults:
 Loose or damaged throttle body.
 Broken throttle shaft.
 Any damage to the throttle body.
 If any of these conditions exist, replace the throttle body assembly.

34. 3. Connect the scan tool and wait until the engine reaches operating temperature. Observe MAF sensor parameters.
35.
36. 4. Create a protocol with a list of engine data by following the steps below.
 Start the engine at idle speed.
 Slowly increase engine speed to 3000 rpm, then return to idle.
 Complete the protocol and view the data.
 View MAF/TP sensor parameters frame by frame. The MAF/TP sensor parameters should fluctuate smoothly and continuously as the engine speed increases and returns to idle.

If the MAF/TP sensor parameters do not change continuously and smoothly as the engine speed increases and returns to idle, locate the defective sensor and replace it.

Diagnostic Trouble Codes (DTCs) P0100, P0102, or P0103
DTC Description
DTC P0100: Mass Air Flow (MAF) Sensor Circuit
DTC P0102: Mass Air Flow (MAF) Sensor Circuit Low
DTC P0103: Mass Air Flow (MAF) Sensor Circuit High

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

Conditions for Running the DTC

P0100
-The engine is running.
-Ignition 1 voltage is greater than 10.5V.
- DTC P0100 is set continuously if the above conditions are met for more than 1 second.
P0102 or P0103
- Before the ECM can set fault codes P0102 or P0103, no faults corresponding to codes P0121, P0122, P0123, P0221, P0222, P0223, P0336 and P0338 must be detected.
-The engine is running.
- Engine speed exceeds 320 rpm.
-Ignition 1 voltage is greater than 7.5V.
- DTCs P0102 and P0103 are set continuously if the above conditions are met for less than 1 second.

Conditions for setting the DTC.

P0100
- The ECM detects that the MAF sensor signal is outside the specified range of the calculated mass air flow values.

P0102
- The ECM detects that the MAF sensor signal is less than -11.7 grams per second.

P0103
- The ECM detects that the MAF sensor signal is greater than 294 grams per second.
-This condition persists for more than 4 seconds.

Action Taken When the DTC Sets

Conditions for Clearing the DTC

DTCs P0100, P0102 and P0103 are type E.

Diagnostic Information

- Any solenoids
- Any relays
- Any motors
2. Accelerating from a standstill at wide open throttle (WOT) should cause the MAF sensor reading on the scan tool to rapidly increase. This increase should go from 3-10g/s at idle to 150g/s or more during the 1-2 shift. If no increase is observed, then it is necessary to check if there are any obstructions to the movement of air in the intake or exhaust system.
3. Check whether the sensitive elements of the MAF sensor are dirty and whether there is water penetration into them. If the sensor is dirty, clean it. If it is not possible to clean the sensor, then replace it.
4. High resistance may result in poor engine performance before the DTC sets.

Circuit/System Testing

34. 1. Let the engine idle for 1 minute, use a scan tool to obtain information on diagnostic trouble codes. Codes P0100, P0102 and P0103 must not be set.
35.
36. 2. If the vehicle has successfully passed the circuit / system test, then the conditions required for the diagnosis should be provided. It is also possible to provide the conditions recorded in the status/fault log data records.

Circuit / system test

37. 1. Turn off the ignition, disconnect the harness connector from the MAF sensor.

2. Turn on the ignition, make sure that the test lamp connected between the ignition circuit terminal and ground is off.
If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
If no faults are found during circuit testing and there is an open ignition circuit fuse, then all components connected to the ignition circuit should be checked and, if necessary, replaced.
3. Check that the control lamp is on, connected between the voltage "B +" and the contact of the ground circuit.
If the test lamp does not illuminate, repair the open/high resistance in the ground circuit.
4. 4. Using a scan tool, check if the MAF sensor voltage is greater than 4.8 volts.
4. If the voltage is less than the specified voltage, test the signal circuit for a short to ground. If no fault is found during circuit/connection testing, replace the ECM.
5. 5. Connect a jumper with a 3 A fuse between the signal circuit terminal and the ground circuit terminal. Verify the MAF sensor voltage is less than 0.10 V with a scan tool.
5. If greater than the specified voltage, test the signal circuit for a short to live or an open/high resistance. If no fault is found during circuit/connection testing, replace the ECM.
6. 6. If no fault is found when testing all circuits/connections, replace the MAF sensor.

Diagnostic Trouble Code (DTC) P0101
DTC Description

DTC P0101: Mass Air Flow (MAF) Sensor Circuit Performance

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Description of circuits / systems

The mass air flow (MAF) sensor is located in the intake duct. The MAF sensor is an air flow meter that measures the amount of air entering the engine. The MAF sensor uses a heated film that is cooled by air flowing into the engine. Cooling is proportional to the air flow. With an increase in air flow, the current required to maintain a constant temperature of the heated film increases. The ECM uses the MAF sensor to provide the required fuel supply in all engine operating modes.

Conditions for Running the DTC
- Tests P0100, P0102, P0103, P0121, P0122, P0123, P0221, P0222, P0223, P0335, P0336, and P0338 must pass before the ECM reports DTC P0101.
- DTC P2176 does not set.
-Engine speed above 320 rpm.
- MAF sensor signal shows more than 11 g/s.
- Ignition voltage is greater than 10.5 volts.
- The ECM detects more than 150 crankshaft revolutions.
- DTC P0101 is set continuously if the above conditions are met for more than 2 seconds.

Conditions for setting the DTC.

The ECM detects that the MAF sensor signal is out of range for the calculated mass air flow.
-This condition persists for 4 seconds.

Action Taken When the DTC Sets

Conditions for Clearing the DTC

DTC P0101 is type E.

Diagnostic Information

1. Inspect the MAF sensor harness and check if it is located too close to the following components:
- Wiring or secondary windings of ignition coils
- Any solenoids
- Any relays
- Any motors
- Dirty or worn air filter element.
-Water entering the intake system.
- Vacuum leak.
-Leak in the brake booster.
- Malfunction in the crankcase ventilation system.
Clogged or damaged air duct.

2. Accelerating from a standstill at wide open throttle (WOT) should cause the MAF sensor reading on the scan tool to rapidly increase. This increase should go from 3-10g/s at idle to 150g/s or more during the 1-2 shift. If no increase is observed, then it is necessary to check if there are any obstructions to the movement of air in the intake or exhaust system.

3. Check whether the sensitive elements of the MAF sensor are dirty and whether there is water penetration into them. If the sensor is dirty, clean it. If it is not possible to clean the sensor, then replace it.

4. High resistance may result in poor engine performance before the DTC sets.

Circuit/System Testing

25. 1. Let the engine idle for 1 minute, use a scan tool to obtain information on diagnostic trouble codes. Code P0101 should not be set.
26.
27. 2. If the vehicle has successfully passed the circuit/system test, then the conditions required for the diagnosis should be provided. It is also possible to provide the conditions recorded in the status/fault log data records.

Circuit / system test

28. 1. Check the following:
29.
-Vacuum leak in the engine
-Air leak in intake duct between Mass Air Flow (MAF) sensor and throttle body
-Clogged or damaged intake duct
- An object is blocking the air intake of the MAF sensor
- Clogged air filter element.
-Clogged throttle body or soot around the throttle body
- Engine oil dipstick not installed
-Loose or missing engine oil filler cap
-Crankcase overflow
- If any of the above faults is found, it should be eliminated.

30. 2. Turn off the ignition, disconnect the harness connector from the MAF sensor.

Note: DO NOT use the low test circuit at the component harness connector for this test. Damage to this control unit can lead to an increase in current.

3. Turn on the ignition, make sure that the test lamp is not lit, connected between the ignition circuit terminal and ground.
-If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If no faults are found during circuit testing and there is an open ignition circuit fuse, then all components connected to the ignition circuit should be checked and, if necessary, replaced.
4. Check that the control lamp is on, connected between the voltage "B +" and the contact of the ground circuit.
-If the test lamp does not illuminate, repair the open/high resistance in the ground circuit.
5. Using a scan tool, check for MAF sensor voltage greater than 4.8 volts.
- If the voltage is less than the specified voltage, test the signal circuit for a short to ground. If no fault is found during circuit/connection testing, replace the ECM.
6. Connect a jumper with a 3 A fuse between the signal circuit terminal and the ground circuit terminal. Verify the MAF sensor voltage is less than 0.10 V with a scan tool.
-If greater than the specified voltage, test the signal circuit for a short to live or an open/high resistance. If no fault is found during circuit/connection testing, replace the ECM.
7. If no fault is found when testing all circuits/connections, replace the MAF sensor.

Diagnostic Trouble Codes (DTCs) P0111, P0112, or P0113

DTC Description

DTC P0111: Intake Air Sensor (IAT) Circuit Performance
DTC P0112: Intake Air (IAT) Sensor Circuit Low Voltage
DTC P0113: Intake Air (IAT) Sensor Circuit High Voltage

Fault diagnostic information

Perform a Diagnostic System Check before using this diagnostic procedure.

Circuit Description

The intake air temperature (IAT) sensor is an integral part of the mass air flow (MAF) sensor. The IAT sensor is a variable resistor that measures intake air temperature. The ECM applies 5 volts to the IAT signal circuit and connects the low reference circuit to ground.

Conditions for Running the DTC

P0111 at idle:



ECT temperature above 75°C (167°F).
Vehicle speed is below 10 km/h (6.3 mph).

P0111 at operating speed:
The P0101 tests must pass before the ECM reports P0111 problems.
DTCs P0112, P0113, P0116, P0117, P0118, P0119, P0125 and P0128 do not set.
Engine coolant temperature (ECT) at start is below 65.4°C (149.7°F).
Vehicle speed is greater than 60 km/h (37.4 mph).
MAF sensor value in the range of 11-42 g/s.
Engine Brake Fuel Cutoff (DFCO) is not activated.
DTC P0111 is set continuously if the above conditions are met for more than 2 seconds.
P0112 and P011:
Engine running time exceeds 3 minutes.
The engine is idling for more than 10 seconds.
Diagnostic checks are performed continuously when the above conditions are met.

Conditions for setting the DTC.

P0111:
The ECM detects that the intake air temperature has risen by less than 4°C (7°F) when performing an idle test.
The condition is met for 16 seconds continuously or 4 times longer than 4 seconds each. OR
The ECM detects that the intake air temperature has risen by less than 4°C (7°F) during the speed stability test.
The fault exists for more than 28 seconds or occurs more than 7 times with a duration of more than 4 seconds in each case.
P0112:
The ECM detects that the intake air temperature is above 132°C (270°F) for more than 4 seconds.
P0113:
The ECM detects that the intake air temperature is less than -42°C (-43.6°F) and deviates from this value within 3°C (5°F) when the air consumption increases by more than 999 grams. The scan tool reading is limited to -40°C (-40°F) and the diagnostic procedure uses -39°C (-38°F) to diagnose an intake air temperature problem.
This condition persists for more than 4 seconds.

Action Taken When the DTC Sets

Conditions for Clearing the DTC/MIL

DTCs P0111, P0112, and P0113 are type E.

Diagnostic Information

24. If the vehicle has been left overnight, the IAT and ECT sensor readings should not differ by more than 3°C (5°F).
25. High resistance in the IAT sensor signal circuit or the IAT sensor low reference circuit may cause a DTC to be set.

Circuit/System Testing
Provide the conditions required for the diagnosis. It is also possible to provide the conditions recorded in the status/fault log data records. DTCs P0111, P0112, or P0113 should not set.

Circuit / system test

1. Turn off the ignition, disconnect the MAF / IAT sensor.
2. Turn on the ignition, verify that the "IAT sensor" parameter is -40°C (-40°F).
3. If greater than -40°C (-40°F), test the IAT sensor signal circuit for a short to ground. If no fault is found during circuit/connection testing, replace the ECM.
4. Turn off the ignition, remove the fuse through which the "B +" voltage is supplied to the ECM.

Note: DO NOT use a test light to check for an open circuit. Damage to this control unit can lead to an increase in current.

4. Test for less than 5 ohms between the low reference circuit terminal and a good ground. If greater than 5 ohms, test the low reference circuit for an open/high resistance, or a short to live. If no fault is found during circuit/connection testing, replace the ECM.
5. Install a fuse that supplies "B+" voltage to the ECM.
6. Ignition on, connect a 3A fused jumper wire between the signal circuit terminal and the low reference circuit terminal. Verify that the IAT sensor setting is greater than 132°C (270°F).

Important: If the IAT sensor signal circuit is shorted to a live wire, the IAT sensor may be damaged.

If less than 132°C (270°F), test the IAT sensor signal circuit for a short to live or an open/high resistance. If no fault is found during circuit/connection testing, replace the ECM.
7. If no fault is found when testing all circuits/connections, test or replace the MAF/IAT sensor.

Component testing

1. Turn off the ignition, disconnect the harness connector from the IAT sensor.

Important: You can use a thermometer to test the sensor outside the vehicle.

2. Check the IAT sensor by changing its temperature and at the same time measuring the electrical resistance of the sensor. Compare the results with the values ​​given in the table Resistance vs. Temperature. Intake air sensor (IAT) . The measured resistances should not differ from the required values ​​by more than 5 percent.
If the resistances differ by more than 5 percent, then the IAT sensor must be replaced.

Error 0500 - "Vehicle speed sensor, no signal."
An error occurs if the controller has determined a sensor malfunction by self-diagnosis.
Causes: moisture ingress into the sensor, damage to the wires.

Ignition on, engine not running. Disconnect the harness connector from the vehicle speed sensor. Using a multimeter, measure the voltage at pin “2” of the harness block. If the voltage is 0 V, then an open or short to ground in the sensor signal circuit or the controller is faulty. If the voltage is about 12 V, then there is a short to the power supply in the sensor signal circuit or the controller is faulty.
With a probe connected to ground, touch terminal “2” of the harness block several times per second, while observing the vehicle speed signal on the BC. If the BC shows a speed of 0 km / h, then the controller is faulty.
Using a multimeter, measure the voltage at pin “1” of the harness block. If the voltage is 0V, then there is an open in the sensor power supply circuit.
Using a multimeter, measure the voltage at pin “3” of the harness block relative to the power supply. If the voltage is 0V, then there is an open in the sensor ground circuit. If the voltage is not 0V, then the connection is loose or the speed sensor is faulty.

Error 0501 - "Vehicle speed sensor, signal out of range."
The error occurs if within 3 seconds the vehicle speed does not match the engine speed and the selected gear.
The procedure for finding the cause of the malfunction:
Switch off the ignition. Disconnect the harness pads from the controller and DSA. Check the integrity of the electrical circuit between the contact "DSA" of the block to the controller and contact "2" of the block to the DSA, between the contact "Ground of sensors" of the block to the controller and contact "3" of the block to the DSA, between contact "1" of the block to the DSA and the main relay.
If the circuit is faulty, then the wiring harness is faulty. If the circuit is OK, substitute a known-good vehicle speed sensor. Erase the trouble code and reproduce the conditions for the code. When re-entering the code, replace the controller.

Error 0503 - Intermittent vehicle speed sensor signal.
An error occurs if the vehicle speed sensor signal periodically disappears.
Causes: Unreliable contact in the harness pads connected to the speed sensor or controller. Inspect the harness pads, sensor and controller connectors for completeness and correctness of the articulation, damage to the locks, the presence of damaged contacts and the quality of the connection between the contacts and the wire. Harness damage. Check harness for damage. If the tourniquet is outwardly normal, move the corresponding block and tourniquet while observing the BC. Moisture getting inside the speed sensor can also lead to the appearance of code 0503. This happens especially often in spring and autumn.

Error 0504 - "A / B" brake pedal switches, signal mismatch in time.
An error occurs if the signals of the limit switches "1-4/2-3" of the brake pedal are out of alignment for more than 200 seconds per running engine in idling mode or the number of pressing the brake pedal, determined by the signals of the two limit switches "1-4/2-3", differs by the value of the diagnostic threshold on a moving vehicle.
The procedure for finding the cause of the malfunction:
1 If, when the brake pedal is pressed, the brake lights do not light up intermittently or constantly, check: if the brake pedal switch rod is jammed when the brake pedal is pressed; check the presence of on-board voltage on contacts "1" and "4" of the brake pedal switch in a free and depressed state in accordance with the principle of operation of the switch; check that the relevant fuses in the brake light circuits are intact; check the condition and reliability of the connection of the contacts in the brake pedal switch block.
2 If when you press the brake pedal with the parking lights, direction indicators, reversing, fog lights, there is a weak glow of brake lights, check the reliability of the ground circuit of the rear lights.
3 Check the presence of on-board voltage on contacts "2" and "3" of the brake pedal switch in a free and depressed state in accordance with the principle of operation of the switch.
4 Check the continuity of the electrical circuit between the contact "Brake pedal switch 1" of the shoe to the controller and contact "3" of the shoe to the switch, between the contact "Brake pedal switch 2" of the shoe to the controller and contact "4" of the shoe to the switch.
If malfunctions are found, then eliminate the detected malfunctions. If necessary, replace the brake pedal switch.
If no malfunctions are found, then check the technological gap of the brake pedal switch, if necessary, adjust the gap. Erase the trouble code and reproduce the conditions for the code. When re-entering the code, replace the controller.

Error 0505 - "Idle speed controller error".
The procedure for finding the cause of the malfunction:
Start the engine and warm it up to operating temperature. With the throttle closed, use the BC (some models support this function) to change the idle speed in the range from 800 to 1000 rpm. If the speed changes in accordance with the specified ones, then turn off the ignition. Disconnect the block from the IAC. Using a multimeter, measure the resistance of the IAC windings. If the resistance between contacts "A" and "B", "C" and "D" IAC is within 40 ... 80 Ohm, and the resistance between contacts "A" and "D", "C" and "B" IAC is more than 1 MΩ, then check the reliability of the connections in the block. Check the pressure in the fuel supply system, check the injectors for leaks. Otherwise, replace the IAC.
Switch off the ignition. Disconnect the block from the IAC. Connect to IAC tester idle controller. Start the engine. Using the tester, control the IAC by setting an increase or decrease in idle speed. If the speed does not change in accordance with the specified ones, then check the air channels of the idle system, if they are normal, replace the IAC.
Switch off the ignition. Disconnect the ignition harness connector from the controller. Using a multimeter, measure the resistance in the circuits between the contacts of the IAC block and the block to the controller: "A" and "PXXA", "B" and "PXXB", "C" and "PXXC", "D" and "PXXD". If the resistance is less than 1 ohm, then the controller is faulty. If the resistance is more than 1 ohm, then eliminate the breaks in the circuits.

Error 0506 - "The idle speed controller is locked, low speed."
An error occurs if the current idle correction exceeds the threshold values.
Reasons: too lean or too rich mixture, dirty air filter, faulty IAC or wiring harness.
Check air filter for pollution. Check that the crankcase ventilation hoses are connected correctly. If faults are found, they must be corrected.
The procedure for finding the cause of the malfunction:

Disconnect the harness connector from the idle speed control. Connect the tester wires to check the IAC to the battery, then connect its block to the idle speed regulator. Start the engine. Using a tester, control the regulator by setting an increase in idle speed. If the rpm does not change, replace the idle speed control. If the speed increases, then replace the controller.

Error 0507 - "The idle speed controller is locked, high speed."
An error occurs if the current idle correction is below the threshold values.
Causes: lean mixture, air leaks, malfunction of the IAC or wiring harness.
The procedure for finding the cause of the malfunction:

Check intake system for air leaks. Check that the crankcase ventilation hoses are connected correctly. If faults are found, they must be corrected.
Disconnect the harness connector from the idle speed control. Connect the tester wires to check the IAC to the battery, then connect its block to the idle speed regulator. Start the engine. Using a tester, control the regulator by setting a decrease in idle speed. If the rpm does not change, replace the idle speed control. If the speed decreases, then replace the controller.

Error 0508 - "Idle speed controller, control circuit short to ground."
An error occurs if the self-diagnosis of the idle speed controller control driver has detected a short to ground at the output.
The procedure for finding the cause of the malfunction:
Switch off the ignition. Disconnect the harness connector from the IAC. With a probe connected to the power source, check the contacts of the harness block. If the probe light does not come on, the idle speed controller is faulty.
Disconnect the harness connector from the controller. With a probe connected to the power source, check that contact of the harness block, during the previous check of which the light came on. If the probe lamp lights up, then the control circuit under test is shorted to ground. If the probe light does not come on, the controller is faulty.

Error 0509 - "Idle speed controller, control circuit short to power supply or open."
The error occurs if the self-diagnosis of the idle speed controller control driver has detected a short to power supply or no load at the output.
The procedure for finding the cause of the malfunction:


Connect the harness block to the controller. Using a multimeter, measure the resistance between the IAC terminals and ground. If during all checks the resistance is 19 ... 21 kOhm, then there is a weak connection in the block of the IAC harness.
Disconnect the harness connector from the controller. Using a multimeter, check the resistance of the wire between the contact of the harness block, on which the resistance is not equal to 19 ... 21 kOhm, and the corresponding contact of the controller block. If the resistance is less than 1 ohm, then the controller is faulty. If the resistance is more than 1 ohm, then repair the open circuit.

Error 0511 - "The idle speed controller, the control circuit is faulty."
The error occurs if the self-diagnosis of the idle speed controller control driver has detected a short to ground or power supply at the output, or no load.
The procedure for finding the cause of the malfunction:
Stop the engine. Disconnect the harness connector from the regulator. Using a multimeter, check the resistance of the idle speed controller windings. If the resistance between IAC contacts "A" and "B", and "C" and "D" is not equal to 40 ... 80 Ohms, then the idle speed controller is faulty.
Disconnect the harness connector from the controller. With a tester connected to ground, check all the contacts of the harness block disconnected from the idle speed controller. If the probe light comes on, then there is a short circuit to the power source of the control circuit.
Switch off the ignition. Using a probe connected to a power source, check all the contacts of the harness block disconnected from the idle speed controller. If the probe light comes on, there is a short to ground in the control circuit.
Connect the harness block to the IAC. Using a multimeter, measure the resistance between the contacts "РХХА" and "РХХB", "РХХС" and "РХХD". If the resistance is 40 ... 80 ohms, then the controller is faulty. If the resistance is not equal to 40 ... 80 Ohms, then an open circuit in the control circuit or a weak connection in the harness block to the IAC.

Error 0522 - "Oil pressure sensor circuit, low signal."

The procedure for finding the cause of the malfunction:
Switch off the ignition. Disconnect the harness block from the DDM. Start the engine. Check the short circuit of the DDM contact to ground. If there is a short circuit, then the DDM or low oil pressure is faulty.
Switch off the ignition. Disconnect the harness connector from the controller. Carry out a check of the short circuit of the contact "DDM" of the block of the wiring harness to ground. If there is a short, then the wiring harness is faulty. If there is no short circuit, then the controller is faulty.

Error 0523 - "Oil pressure sensor circuit, signal high."
The error occurs if the state of the sensor does not change after starting the engine.
The procedure for finding the cause of the malfunction:
Switch off the ignition. Disconnect the harness block from the DDM. Start the engine. Check the short circuit of the DDM contact to ground. If there is a short circuit, then the DDM is faulty.
Switch off the ignition. Disconnect the harness connector from the controller. Check the electrical circuit from the "DDM" contact of the block to the controller to the contact of the block to the DDM for an open circuit. If there is an open, then the wiring harness is faulty. If there is no break, then the controller is faulty.

Error 0532 - "Air pressure sensor, low signal."
An error occurs if the signal voltage of the pressure sensor is less than 0.2 V.
Causes: Unreliable connection of the “DD” contact of the block of the ignition system harness and the controller. Inspect the harness block and the controller connector for completeness and correctness of the articulation, damage to the locks, the presence of damaged contacts and the quality of the connection of the contacts to the wire. Harness damage. Check harness for damage. If the tourniquet is outwardly normal, move the corresponding block and tourniquet, while simultaneously observing the readings of the BC. If code 0102 is registered together with code 0532, then diagnostics should be started with code 0102.
The procedure for finding the cause of the malfunction:
Switch off the ignition. Disconnect the harness connector from the pressure sensor. Turn on the ignition. Using a multimeter, measure the voltage between terminal "2" of the harness block and ground. If the voltage is not equal to 4.9 ... 5.1V, then an open or short to ground in the sensor power supply circuit, a weak connection, or the controller is faulty.
Switch off the ignition. Disconnect the harness connector from the controller. Use a multimeter to measure the resistance of the circuit between terminal "3" of the block to the pressure sensor and contact "DD" of the block to the controller. If the resistance is less than 1 ohm, then there is a short to ground in the output signal circuit of the pressure sensor, or the pressure sensor is faulty. If the resistance is more than 1 ohm, then there is an open in the pressure sensor output signal circuit.

Error 0533 - "Air pressure sensor, high signal level."
An error occurs if the pressure sensor signal voltage is more than 3.8 V.
Causes: Harness damage. Check harness for damage. If the tourniquet is outwardly normal, move the corresponding block and tourniquet, while simultaneously observing the readings of the BC. If code 0103 is registered together with code 0533, then diagnostics should be started with code 0103.
The procedure for finding the cause of the malfunction:
Disconnect the harness connector from the pressure sensor. Using a multimeter, measure the voltage between terminal "3" of the harness block and ground. If the voltage is more than 3.8 V, then the pressure sensor signal circuit is shorted to the power source or the controller is faulty.
Using a probe connected to the "+" terminal of the battery, check contact "1" of the harness block. If the probe light is on, the pressure sensor is faulty. If the probe light is off, then there is an open in the ground circuit of the pressure sensor or the controller is faulty.

Error 0560 - "On-board voltage is below the system health threshold."
An error occurs if the controller supply voltage is below 7V.

Error 0562 - "On-board voltage is low."
An error occurs if the controller supply voltage is below 10V.
Reasons: discharged accumulator battery, faulty wiring harness.

Error 0563 - "On-board voltage is high."
An error occurs if the controller supply voltage is higher than 17V.
Reasons: malfunction of the generator relay, malfunction in the wiring harnesses.

xn—2111-43da1a8c.xn—p1ai

Not at all large in size, the X1 State on-board computer is capable of performing a variety of climatic, route and diagnostic functions. It is installed on cars of the VAZ family - Kalina, Niva, 2123, 2110 and others.

1. What State X1 Can Do - Computer Feature Information
2. Diagnostics with a scanner - are the components of your car working normally?
3. Self check- decipher error codes

1 What X1 State Can Do - Computer Feature Information

• diagnostic tester. It performs the function of a digital speedometer, tachometer, controls the operation of the power unit and throttle (tuned or standard), reads system diagnostic codes, notifies about the mains voltage in the car and about the engine temperature.
• Trip computer. Useful and convenient mode. In it, the on-board computer at the VAZ State shows the speed (average value) of driving in one trip, the distance traveled by the car, the remaining fuel in the tank and its consumption per trip, travel time. The BC also predicts the range of run on the remaining fuel and has a counter of the latter.
• Supervisor. The device is equipped with an idle time counter and non-volatile memory, it notifies the driver about the direction indicators and dimensions that are not turned off, as well as about a rollback (spontaneous) vehicle.
• signaling device. The state reports exceeding the speed limit, malfunctions in the on-board network, and potentially unsafe for auto overheating of the power unit.

• On-board computer Vaz 21099
• Throttle position sensor test
• On-board computer Dingo - practicality with a minimum budget
• Autoscanner for self-diagnosis of any car

In addition, X1 State has three additional features that have appealed to domestic motorists. The Tropic mode implies automatic control of the cooling system of the machine, the Plasmer is responsible for drying the candles and their subsequent heating to a temperature that allows them to produce cold start engine, afterburner resets when switching fuel from gas to gasoline and vice versa.

A small nuance. The Fast and the Furious function works exclusively with high-quality brands of gasoline (95 and higher). Installation of State X1 is carried out without the slightest difficulty in the plug on the instrument panel.

You will need instructions for mounting the BC in specific model car VAZ. The installation principle is the same. It is necessary to remove the overlay from the dashboard, and then alternately connect the one-color factory wiring to the on-board computer wires. State X1 does not need any special configuration. Install the BC, turn on the ignition, start the device, and it immediately goes into the trip computer mode. If you want to switch to the diagnostic mode, press the CORR button. The BC switches to the alarm (emergency) mode on its own.

2 Diagnostics with a scanner - are the components of your car working normally?

Operation of the on-board computer

• THR - throttle position;
• UACC is the battery voltage;
• AIR - air consumption (mass);
• FREQ - rotation (frequency) of the crankshaft;
• INJ - injection pulse duration;
• UOZ - ignition advance;
• FSM - idle speed sensor;
• QT is the fuel consumption coefficient.

3 Self-check - decipher error codes

Checking the on-board computer

• P0113 and P0112 - incorrect operation of the sensor or failure of the mechanism that controls the temperature of the air flow at the inlet;
• P0106 ​​- incorrect signal from the vehicle motion detector;
• P0172 and P0171 - an increased or decreased indicator of the combustible mixture;
• P0122 (0123) - the throttle circuit is broken;
• P1102 - insufficient signal from the oxygen sensor heater;
• P0647 - malfunction of the clutch of the climate control system;
• P0325 - open knock sensor;
• P0301-0304 - misfires in the cylinders (in one of four or several at once).

tuningkod.ru

An on-board computer is a device that assists the driver in the operation of the vehicle. Today we will talk about the domestic device State Kalina X5 M. The computer is designed specifically for this VAZ model, which makes it easy to connect and use.

1. Standard trip computer options State X5 M
2. New functions of the device - what to expect from manufacturers in the future
3. Do-it-yourself installation of the device - how to avoid mistakes

1 Standard on-board computer options State X5 M

The next useful option is Plasmer. By turning on this function, the owner of Lada Kalina starts the flow of additional impulses to the electrodes of the candles. So on frosty days, Lada starts up much faster, and the computer gives fewer error codes. The "View ECM Errors" function is designed for visual viewing of codes.

Another very useful option for Russian drivers is Fuel Quality Control. Using the "-" or "+" icons, the on-board computer shows percentage the quality of fueled gasoline. Thanks to the "Powertrain Parameters" option, the Lada driver has the opportunity to see a clear picture of the state of the engine; the time spent on heating it; as well as the battery charge level and the voltage indicator in the instrument panel sensors. In the event of a malfunction of the motor elements, the device issues error codes with the name "Engine ...".

The on-board computer State X5 M on Kalina also has a built-in display settings function. Using it, the driver can display on the screen of the device those indicators that are of the greatest importance to him. With the same option, you can adjust the color, contrast and brightness of the display.

Another useful feature is the Gasoline Pump Diagnostics. It controls the pressure and power of the system. This option also makes it possible to determine the status of each injector of the Lada injector.

Indications of BK Lada Kalina

• P0134 - no signal from the oxygen sensor;
• P0201 - damage to the injector control circuit;
• P0301 - misfires appeared in the cylinders;
• P0335 - no crankshaft sensor signal;
• P0560 - low voltage in the electrical circuit of the machine.

2 New functions of the device - what to expect from manufacturers in the future

3 Do-it-yourself installation of the device - how to avoid mistakes

Every motorist should have universal device to diagnose your car.

You can read, reset, analyze all sensors and configure the car's on-board computer yourself using a special scanner ...

• instructions for connecting a computer;
• a set of new electrical wiring;
• screwdriver;
• double sided tape;
• soldering iron.

First, disconnect the negative terminal from the Lada battery, after which we unscrew the 4 screws that secure the standard ashtray. We take it out and find the block with the switching contacts alarm. We take out the block - we will connect the on-board computer to it.

Next, we take out the orange wire that is connected to the seventh pin, and instead connect the red-white wire from the computer. After that, insert the orange wire into the single connector of the red-white cord. We disconnect the red-black cord from the tenth pin and install the red wire from the computer instead. We insert the previously disconnected black wire into a single connector of the red wire.

If the computer does not work, you need to pull it out and strip the ends of the electrical cords with pliers. If grooves have formed during installation, they can be soldered using plastic or metal strips.

Do you still think that car diagnostics is difficult?

If you are reading these lines, then you have an interest in doing something yourself in the car and really saving money, because you already know that:

• Service stations break a lot of money for simple computer diagnostics
• To find out the mistake you need to go to specialists
• Simple wrenches work in the services, but you can’t find a good specialist

And of course you are tired of throwing money away, and it’s out of the question to ride around the service station all the time, then you need a simple ELM327 AUTO SCANNER that connects to any car and through a regular smartphone you will always find a problem, pay off the CHECK and save a lot! !!

We have tested this scanner ourselves on different machines and he showed excellent results We now recommend it to EVERYONE! So that you do not fall for a Chinese fake, we publish here a link to the official Autoscanner website.

tuningkod.ru

• Speed ​​mode, remaining fuel, travel time;
• Turnover of the power unit;
• Cabin and engine temperature status;
• Fuel consumption and mileage that the car can drive on the balance;
• Mains voltage;
• Refrigerant temperature and throttle valve placement;
• Error codes;
• Cyclicity of air circulation, distance traveled, average speed and other useful options.

• 2 - overvoltage in the on-board network;
• 3 - problems associated with the fuel indicator;
• 4 - signals a violation temperature regime power unit;
• 6 - indicates an overheating of the engine;
• 7 - critical pressure drop in the lubrication system;
• 8 - violations in the brake assembly;
• 9 - battery discharge.

• The system is de-energized by removing the terminal from the battery;
• The radio control panel is dismantled, along with it;
• Through the resulting window, the fastenings of the BC are disconnected;
• The device is removed with a preliminary shutdown of all connected devices;
• The radio and panel are mounted in place.

AutoFlit.ru

xn—2111-43da1a8c.xn—p1ai

• Turn off the ignition;
• It is necessary to press the daily run button and hold it in this position for a while;
• Simultaneously with holding this button, turn on the ignition;
• After that, all the pointers on the dashboard should move, they should go from zero to the maximum. Now you should press the button on the steering column wiper switch. This makes it possible to display the dashboard. On the third, you can see a list of all the complications that have arisen.

• 2 - this alarm signal reports a significant excess of the voltage of the vehicle's on-board network;
• 3 - warns of problems with the sensor in the fuel tank;
• 4 - can signal problems with the engine coolant or a power failure of the temperature control sensor;
• 5 - malfunctions of the device that controls the outdoor temperature;
• 6 - fixing the ECU of overheating of the power unit, it is impossible to continue moving after the appearance of such a signal;
• 7 - warns of insufficient pressure in the engine lubrication system;
• 8 - when this signal appears, you should pay attention to brake system car;
• 9 - warns of insufficient battery charge voltage;
• E - warns of a possible error in the EEPROM.

• B - indicates malfunctions related to the body. These can be airbags, central locking, windshield wipers, power windows;
• C - is related to problems in the chassis;
• R - warns of problems in power unit or transmission.

• 0 - is common for ATS;
• 1 - refers to the manufacturer of the machine;
• 2 - also from the car manufacturer;
• 3 - is a reserve digit of the code.

• 1 - malfunctions with the supply of the air-fuel mixture;
• 2 - also refers to problems with the supply of the working mixture;
• 3 - problems with the car ignition system;
• 4 - signal about the possibility of auxiliary control;
• 5 - the idle control system does not work;
• 6 - malfunctions with ECU circuits;
• 7 and 8 - refer to vehicle transmission performance errors.

AutoFlit.ru