Test G: The Instrument Panel Illumination Does Not Dim

PINPOINT TEST G: THE INSTRUMENT PANEL ILLUMINATION DOES NOT DIM

Normal Operation
The lighting control module (LCM) supplies a variable pulse width modulated (PWM) voltage to the instrument panel switches through circuit 484 (OG/BK). The LCM uses the instrument panel dimmer switch to determine the intensity of switch illumination.

DTC B2212 (Panel Dim Switch Out Of Range) -is an on-demand DTC that sets when the LCM detects an out of range condition on the dimmer input switch circuit.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Instrument panel dimmer switch
- LCM

G1:

G2-G4:

G4-G6:

G6-G7: