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•
Verify continuity of the cabling between the sensor connector and the control unit connector:
Control unit PIN 11 - sensor PIN C and control unit PIN 12 - sensor PIN D. Restore the
cabling if necessary.
•
If the cabling is intact and the error persists, proceed with the following checks.
Shorted to negative:
•
Disconnect the sensor connector and the control unit connector.
•
Check the sensor connector PIN C ground insulation. In the absence of insulation restore
the cabling.
•
Check the sensor connector PIN D ground insulation. In the absence of insulation restore
the cabling.
•
If PIN C and PIN D are insulated from the ground and the error persists, this means that
there is a probable fault in the control unit.
Lambda probe heater P0135 -
shorted to positive / shorted to negative / open circuit.
Error cause
Shorted to positive: excessive voltage at PIN 31 of the control unit connector.
Shorted to negative: lack of insulation from ground on the sensor connector PIN A.
The circuit is open: interruption of the circuit.
Troubleshooting
Shorted to positive:
•
Disconnect the control unit connector and the sensor connector.
•
Verify that there is no short to battery positive on sensor connector PIN B (corresponding to
control unit connector PIN 31); if there is a short, restore the cabling.
The circuit is open:
•
Disconnect the control unit connector and the sensor connector.
•
Verify continuity of the cabling between the sensor connector and the control unit connector:
control unit PIN 31 - sensor PIN B. Restore the cabling if necessary.
•
Verify continuity of the cabling between the sensor connector and the injection relay: sensor
PIN A - injection relay PIN 3. Restore the cabling if necessary.
•
If the cabling is intact and the error persists, proceed with the following checks.
Shorted to negative:
•
Disconnect the sensor connector.
•
Check the sensor connector PIN B ground insulation. In the absence of insulation restore
the cabling.
•
If PIN B is insulated from ground and in the absence of other errors (fuel pump, injector,
coil), this means that the control unit is most likely faulty.
Electrical system
RS4 125
ELE SYS - 118
Содержание RS4 125
Страница 1: ...SERVICE STATION MANUAL B043126 RS4 125 ...
Страница 5: ...INDEX OF TOPICS CHARACTERISTICS CHAR ...
Страница 44: ...INDEX OF TOPICS SPECIAL TOOLS S TOOLS ...
Страница 49: ...INDEX OF TOPICS MAINTENANCE MAIN ...
Страница 63: ...INDEX OF TOPICS ELECTRICAL SYSTEM ELE SYS ...
Страница 64: ...Components arrangement KEY 1 Stop switch 2 Taillight 3 Injector Electrical system RS4 125 ELE SYS 64 ...
Страница 91: ...TABLE E4 11 Taillight cable harness 14 LED Rear light 15 Cable guide RS4 125 Electrical system ELE SYS 91 ...
Страница 126: ...INDEX OF TOPICS ENGINE FROM VEHICLE ENG VE ...
Страница 139: ...INDEX OF TOPICS ENGINE ENG ...
Страница 146: ... Remove the oil filter Engine RS4 125 ENG 146 ...
Страница 150: ... Unscrew and remove the oil filter plug Remove the spring and oil filter Engine RS4 125 ENG 150 ...
Страница 195: ...Conceptual diagrams Removing Remove the Seeger ring Remove the pump gear RS4 125 Engine ENG 195 ...
Страница 198: ...INDEX OF TOPICS POWER SUPPLY P SUPP ...
Страница 203: ... Loosen the clamp and remove the throttle body RS4 125 Power supply P SUPP 203 ...
Страница 204: ...INDEX OF TOPICS SUSPENSIONS SUSP ...
Страница 230: ...INDEX OF TOPICS CHASSIS CHAS ...
Страница 247: ...INDEX OF TOPICS BRAKING SYSTEM BRAK SYS ...
Страница 262: ...INDEX OF TOPICS COOLING SYSTEM COOL SYS ...
Страница 273: ...INDEX OF TOPICS BODYWORK BODYW ...
Страница 290: ...INDEX OF TOPICS PRE DELIVERY PRE DE ...
Страница 298: ...Windshield Wiring diagram 92 ...