Test F: The Instrument Panel Illumination Does Not Dim

PINPOINT TEST F: 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 switch input circuit.

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

F1-F3:

F3-F6:

F6-F7: