When the ignition is switched on, the indicator lamp lights up (for 0.5 s) and goes out if the self-diagnosis system has not detected a malfunction
This checks the serviceability of the signaling lamp itself.
If the diagnostic system determines a malfunction, then, depending on its nature, the lamp may burn (with the ignition on) either constantly or only when the engine is running.
In both the first and second cases, it is necessary to carry out maintenance of the engine control system.
To switch the control unit to the mode for displaying fault codes, turn on the ignition and remove the cover of the diagnostic connector located under the hood.
Use a jumper made of copper wire to connect the terminals "10" and "12" of the connector
First, the diagnostic system will issue a code (12) three times in a row, indicating that the diagnostic circuit, the control circuit, and the diagnostic system are working.
Fault codes will be displayed next.
Each fault code will be repeated three times
After displaying all fixed fault codes, the information output cycle will repeat. If there are no fault codes in the unit's memory, then only code (12) will appear.
The detected fault code is stored in the unit's memory for approximately two hours.
By the number of activations of the signaling device, we determine the fault codes.
If the battery is disconnected, other setting data generated by the electronic unit to adapt the engine management system to operating conditions will be lost.
After connecting the ground, start the engine and let it idle (without touching the gas pedal) for at least 1 minute in order to adapt the ignition system to the engine.
To adapt the entire control system, you need to warm up the engine to operating temperature and drive the car for about 1 km with partial throttle opening and without sudden acceleration.
To clear the memory, turn off the ignition and remove the "negative" terminal of the battery for 15 seconds.
Connect the ground terminal to the battery in order to avoid damage to the electronic unit only when the ignition is off
Fault - Code
Diagnostic start mode (self-diagnosis performance) 12
Low signal from mass air flow sensor 13
Mass air flow sensor 14 high
Low level signal from the air temperature sensor (short circuit) 17
High level signal from the air temperature sensor (open circuit) 18
Coolant sensor signal low (short circuit) 21
High signal level from the coolant sensor (open circuit, poor contact in the circuit) 22
Throttle position sensor signal low (short circuit) 23
High throttle position sensor signal (open circuit, poor contact in the circuit) 24
Low voltage of the vehicle's on-board network (less than 10 V) 25
High voltage of the car's on-board network (more than 18 V) 26
Low signal level from the corrector (potentiometer) CO 31
High signal level from the corrector (potentiometer) CO 32
Malfunction in knock sensor circuit 41
Faulty control unit 51
Faulty control unit 52
Faulty crankshaft position sensor (timing) 53
54 Camshaft Position Sensor Malfunction
Control unit failure 61
Faulty random access memory (RAM. RAM) control unit 62
Faulty permanent memory (ROM, ROM) of the control unit 63
Fault while reading block 64 non-volatile memory
Fault while writing to non-volatile memory 65
Low idle speed 71
High crank speed th shaft idling 72
Maximum displacement of the UOZ* when controlling for detonation in the 1st cylinder 81
Maximum displacement of the PTO* when controlling for detonation in the 2nd cylinder 82
Maximum displacement of the PTO* when controlling for detonation in the 3rd cylinder 83
Maximum displacement of the PTO* when controlling for detonation in the 4th cylinder 84
Malfunction in the ignition circuit of the 1st cylinder 91
Malfunction in the ignition circuit of the 2nd cylinder 92
Malfunction in the ignition circuit of the 3rd cylinder 93
Malfunction in the ignition circuit of the 4th cylinder 94
Failure of the injector of the 1st cylinder (short circuit in the circuit) 131
Faulty injector of the 1st cylinder (open circuit) 132
Failure of the injector of the 1st cylinder (short circuit to the housing) 133
Cylinder 2 injector malfunction (short circuit) 134
Faulty injector of the 2nd cylinder (open circuit) 135
Faulty injector of the 2nd cylinder (short circuit to the housing) 136
3rd cylinder injector malfunction (short circuit) 137
Faulty nozzle of the 3rd cylinder (open circuit) 138
Faulty injector of the 3rd cylinder (short circuit to the housing) 139
4th cylinder injector malfunction (short circuit) 141
Faulty injector of the 4th cylinder (open circuit) 142
Faulty injector of the 4th cylinder (short circuit to the housing) 143
Malfunction of the winding 1 WFD ** (short circuit in the circuit) 161
Faulty winding 1 WFD ** (break) 162
Malfunction of the winding 1 RDV** (short circuit to the body) 163
Malfunction of the winding 2 RDV" (short circuit in the circuit) 164
Malfunction of the winding 2 RDV** (break) 165
Malfunction of winding 2 RDV** (short circuit to the case) 166
Fuel pump relay circuit malfunction (short circuit) 167
Fuel pump relay circuit failure (open circuit) 168
Fuel pump relay circuit failure (short to ground) 169
Unload relay circuit failure (short circuit)*** 177
Unload relay circuit failure (open)*** 178
Unload relay circuit failure (short to ground)*** 179
Short circuit in warning lamp circuit*** 181
Open signal lamp circuit*** 182
Short to ground in signaling lamp circuit*** 183
* UOZ - ignition timing.
** RDV - auxiliary air regulator.
*** Checked by external diagnostic equipment.