Test B: The Instrument Cluster Illumination Is Inoperative

PINPOINT TEST B: THE INSTRUMENT CLUSTER ILLUMINATION IS INOPERATIVE

B1-B3:

Normal Operation
A variable pulse width modulated (PWM) voltage is supplied from the instrument panel dimmer switch to the instrument panel on circuit 19 (LB/RD). Ground for the instrument cluster illumination is through circuit 57 (BK).

Possible Causes
- Circuit 19 (LB/RD) open
- Circuit 57 (BK) open
- Instrument cluster