Reversing Lamps

Reversing Lamps

Overview

The reverse lamp system consists of:

- Reverse lamps

- PCM (Powertrain Control Module)

- BCM (Body Control Module)

When the transmission is placed in REVERSE, the reversing lamps are illuminated. The reversing lamps are located within the rear lamp assemblies.

System Operation

System Diagram





Network Message Chart

BCM (Body Control Module) Network Input Messages






Reversing Lamps - Automatic Transaxle

When the transmission is in REVERSE, the PCM (Powertrain Control Module) sends a selector lever (PRNDL) status message over the communication network to the BCM (Body Control Module) indicating the transmission is in reverse. The BCM (Body Control Module) provides voltage to the reversing lamps when it receives the message that the transmission is in reverse and the ignition is in RUN.

The BCM (Body Control Module) also provides an overload protection of the reversing lamp output circuits. When an excessive current draw is detected, the BCM (Body Control Module) disables the affected reversing lamp circuit driver. REFER to Field Effect Transistor (FET) Protection Description and Operation.