Checking wire and replacement of component
Check the wire between the control unit 1A and reverse light contact 2 (3/10) for a short-circuit to voltage supply as described in Short-circuit to supply voltage. Permanent faults , and for an open circuit as described in Open-circuit, permanent faults .
Also check the connectors for a short circuit to voltage supply, as described in Short-circuit to supply voltage. Permanent faults , and for an open circuit as described in Open-circuit, permanent faults .
If no fault is found on the wire, check the function of the reversing lamp switch.
HINT: If reverse light contact is closed, the voltage between 1 and 2 on the contact is 0 V.
Do the necessary corrective action.
Additional information
- To access/replace the central electronic module (CEM), see Central electronic module (CEM), replacing .
- For information on signals and additional values:
- -2004: see Signal specification
- 2005-: see Signal specification
- To connect the test box, see Connecting the breakout box .
Check the wire between the central electronic module (CEM) 1A and reverse light contact 2 (3/10) for a short circuit to ground as described in Short-circuit to ground, permanent faults .
Also check the connector for a short circuit to ground as described in Short-circuit to ground, permanent faults .
If no fault is found on the wire, check the function of the reversing lamp switch.
HINT: If brake light contact is closed, the voltage between 1 and 2 on the contact is 0 V.
Do the necessary corrective action.
Additional information
- To access/replace the CEM connector, see Central electronic module (CEM), replacing
- For information on signals and additional values:
- -2004: see Signal specification
- 2005-: see Signal specification
- To connect a test box, see Connecting the breakout box .