Test F: The Control Illumination Does Not Dim
PINPOINT TEST F: THE CONTROL ILLUMINATION DOES NOT DIMF1:
F1-F3:
F3-F5:
F6:
Normal Operation
The smart junction box (SJB) monitors the input from the instrument panel dimmer switch by sending a voltage reference signal through circuit CLN27 (WH/BN) to the instrument panel dimmer switch. The return signal is sent through circuit CLN17 (BN) back to the SJB. Based on the return signal intensity, the SJB sends a pulse-width modulated (PWM) voltage signal to the dimmable illumination sources. If the SJB detects a concern with the circuitry to the instrument panel dimmer switch, the SJB defaults the backlighting to a full intensity level.
DTC B2132 - sets when the SJB detects a short to ground on the dimmer switch circuit.
Possible Causes
- Circuit CLN17 (BN) open, short to ground or voltage
- Circuit CLN27 (WH/BN) open, short to ground or voltage
- Instrument panel dimmer switch
- SJB