Reverse Light Remains On

Checking reverse light contact

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 Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
Also check the connectors for a short circuit to voltage supply, as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault , and for an open circuit as described in Checking wiring and terminals. Permanent fault Checking Wiring and Terminals. Permanent Fault.
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 Central Electronic Module (CEM), Replacing.
- For information on signals and additional values, see Signal specification Pinout Values and Diagnostic Parameters.
- To connect the test box, see Connecting the breakout box Connecting the Breakout Box, Central Electronic Module (CEM).






Continue - Fault Found

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