Test E: The Demand Lighting Is Inoperative

PINPOINT TEST E: THE DEMAND LIGHTING IS INOPERATIVE

E1-E2:

E2-E4:

E5:

Normal Operation
The instrument panel dimmer switch controls the demand lighting function. When the instrument panel dimmer switch is closed, the voltage reference circuit signals the smart junction box (SJB). The SJB monitors the instrument panel dimmer circuit, and based on the status, the SJB will supply voltage to the interior lamp on circuit CLN28 (GN/BU). Circuit CLN28 (GN/BU) then supplies voltage to the interior lamp. The interior lamp relay in the SJB deactivates the voltage after a predetermined time-out.

Possible Causes
- Circuit CLN27 (WH/BN) open
- Circuit GD161 (BK/YE) open
- Instrument panel dimmer switch
- SJB