B2627

CIRCUIT DESCRIPTION
The BCM controls the illumination of the following lamps through pulse width modulation when the park lamps or the headlamps are on:
^ The automatic transmission control position illumination lamp
^ The left glass window release switch illumination lamp
^ The electronic traction control switch illumination lamp
^ The door lock theft deterrent defeat switch illumination lamp
^ The electronic traction control switch illumination lamp
^ The heater A/C control switch illumination lamp
^ The instrument cluster illumination lamps
^ The headlamp switch illumination lamp
^ The radio switches illumination lamps
^ The driver information display switch illumination lamp
^ The heated seat switch illumination lamp
^ The door lock switches illumination lamps
^ The window switches illumination lamps
^ The steering wheel controls illumination lamps

CONDITIONS FOR RUNNING THE DTC
Voltage supplied to the module is in the normal operating range (approximately 10 - 6 volts).

CONDITIONS FOR SETTING THE DTC
^ The BCM detects a short to ground in the supply voltage circuit of the illumination lamps when the park lamps or the headlamps are on, and the dimmer switch is in any position but OFF.
^ The condition is present for more than 3 ms.

ACTION TAKEN WHEN THE DTC SETS
The BCM stores DTC B2627 in memory.

CONDITIONS FOR CLEARING THE MIL/DTC
^ A current DTC B2627 clears if the BCM no longer detects a short to ground in the supply voltage circuit of the illumination lamps.
^ A history DTC B2627 clears after 100 consecutive ignition cycles.
^ The BCM receives the Clear Code commend from the scan tool.

DIAGNOSTIC AIDS

Steps 1-6:

^ If the DTC B2627 is a history DTC, the fault may be intermittent. Refer to Testing for Intermittent and Poor Connections in Diagrams.
^ An intermittent short to ground in the following locations may cause an intermittent malfunction to occur:
- The supply voltage circuit of the illumination lamps
- The BCM