Menu 1 fault memory

Fault/Fault code Possible causes

Remedy/Remarks

HF sender rear left

- Short to ground - may also be checked via menu 2 = sensors. In this case, HF

sensor defective appears regardless of the wheel position if there is a ground fault.

- Disconnect the control unit plug and measure from PIN 18 to ground 5 kOhm would be displayed if there is no ground fault). Check the entire line path between control unit plug and HF sensor according to the circuit diagram.

- Open circuit - may also be checked via menu 2 = sensors. In this case, HF

sensor defective appears regardless of wheel position if there is discontinuity.

- Open HF sensor connector on the wheel carrier. Check cable path for discontinuity from the socket of the combined connector to PIN 18 of the control unit plug. If it is not possible to determine any discontinuity, check whether ground is present at the pin of the combined connector. If both are OK, replace HF sensor.

- Signal improbable - Continue HF sensor test via menu 2 = sensors. !f HF sender rear left O.K.* (meaning HF sensor attenuated) appears during this test regardless of the wheel position, replace the HF sensor.

Fault/Fault code Possible causes

Remedy/Remarks

HF sender - Proceed as for fault code -1 - for all faults, but use PIN 35 of rear right the control unit plug.

HF sender _ proceed as for fault code -1 - for all faults, but use PIN 34 of front left the control unit plug.

HF sender _ proceed as for fault code -1 - for all faults, but use PIN 17 of front right the control unit plug.

ABS speed sensor rear left

- Open circuit/ - Check speed signal via menu 2 = sensors, short to ground If no bar diagram appears when the wheel is turned, but ABS

serviceable the fault lies in the line path between ABS control unit and tire pressure warning system control unit.

Connector assignment:

ABS control unit 55-pole PIN 12 ABS control unit 35-pole PIN 30 Tire pressure warning system control unit PIN 26

Fault/Fault code Possible causes

Remedy/R emarks

- If the ABS is also deactivated, look for the fault in the area of the speed sensor or in the fault path between ABS control unit and speed sensor.

- If no fault found, repeat. If the fault is still apparent, try replacing the ABS control unit.

- Signal improbable - Fault not present: This could have occurred under certain envi ronmental conditions, e.g. driving in the vicinity of powerful transmitters. There Is no fault in the vehicle.

- Fault present: First try replacing the ABS control unit then the tire pressure warning system control unit.

ABS speed sensor - proceed as for fault code - 5 - for all faults, rear right

Fault code - 6 - Connector assignment:

ABS control unit 55-pole PIN 10 ABS control unit 35-poie PIN 31 Tire pressure warning system control unit PIN 8

HF sender - proceed as for fault code - 5 - for all faults, front left

Fault code - 7 - Connector assignment:

ABS control unit 55-pole PIN 16

ABS control unit 35- pole PIN 17

Tire pressure warning system control unit PIN 29

Fault/Fault code Possible causes

Remedy/Remarks

ABS speed sensor - proceed as for fault code - 5 - for all faults, front right

Fault code - 8 - Connector assignment:

ABS control unit 55-pole PIN 53

ABS control unit 35- pole PIN 23

Tire pressure warning system control unit PIN 28

RDK control light Combi instrument

- Open circuit / -In the case of discontinuity, ground fault or short circuit, check Short to ground the line from PIN 3 of the tire pressure warning system control unit connector to PIN 6 of instrument cluster connector 1

Data lead

RDK combi instrument

- Open circuit - Check the data line from PIN 1 of the tire pressure warning sys tem control unit connector to PIN 10 of instrument cluster connector 2

0 0

Post a comment