Test C: The Control Illumination Is Always On - All Hardwired Illumination
PINPOINT TEST C: THE CONTROL ILLUMINATION IS ALWAYS ON - ALL HARDWIRED ILLUMINATIONNormal Operation
When the headlamp switch is placed in the PARKING or HEADLAMP ON position, the smart junction box (SJB) supplies either a pulse width modulated (PWM) signal or 12 volts to the various backlighting sources in the instrument panel, doors and console.
- DTC B2027 (LED Backlighting Output Circuit Failure) - is a continuous and on-demand DTC that sets when the SJB detects a short to voltage on the LED backlighting circuits.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- SJB
C1-C3:
