Test A: The Control Illumination Is Inoperative - All Hardwired Illumination
PINPOINT TEST A: THE CONTROL ILLUMINATION IS INOPERATIVE - ALL HARDWIRED ILLUMINATIONNormal Operation
Based on input received from the instrument panel dimmer switch, the smart junction box (SJB) sends a pulse-width modulated (PWM) voltage to the hardwired dimmable illumination sources through circuit VLN04 (VT/GY).
DTC B2A32 (LED backlighting output circuit open) - is an on-demand DTC that sets when the SJB detects an open on the LED backlighting output circuit. The DTC also sets as a result when fuse 10 (15A) has failed or is removed.
DTC B2A33 (LED backlighting output circuit short to ground) - is a continuous and on-demand DTC that sets when the SJB detects a short to ground on the LED backlighting output circuit.
This pinpoint test is intended to diagnose the following:
- Fuse
- Wiring, terminals or connectors
- SJB
A1-A4:
