Backup Lamp: Description and Operation

GF82.10-P-3011GM Backup Lamp Actuation, Function

Function requirements for backup light actuation in general
^ Circuit 15 On

The circuit status is made available on the interior CAN by the EIS [EZS] control unit (N73).

Backup light actuation, general
The backup light actuation enables the road to the rear of the vehicle to be illuminated when backing up.

Backup lamp actuation function sequence
The status of the current transmission selector lever position is made available on the engine compartment CAN by the intelligent servo module for DIRECT SELECT (A80).

The central gateway control unit (N93) forwards this to the rear SAM control unit (N10/8) via the interior CAN. The rear SAM control unit then actuates the following components directly:
- Left backup lamp (E3e3)
- Right backup lamp (E4e3)

- Backup lamp on trailer (with code (550) Trailer hitch) via the
- Trailer hitch socket, 13-pin (X58) (without code (460) Canada version or without code (494) USA version)
- Trailer hitch socket, 7-pin (X58/11) (with code (460) Canada version or code (494) USA version)