Test D: The Courtesy Lamps Stay On Continuously

PINPOINT TEST D: THE COURTESY LAMPS STAY ON CONTINUOUSLY

Normal Operation
When a door is opened, the door ajar input from circuit 1312 (LG/BK) or circuit 1314 (YE/GN) to the smart junction box (SJB) opens. When the SJB identifies that the circuit is open, the SJB provides voltage and ground to the courtesy lamps through circuit 53 (BK/LB) and 54 (LG/YE). The door ajar switches are grounded through circuit 1205 (BK).

When the dimmer switch is rotated to the interior lamps ON position, the SJB receives a signal through circuit 2085 (VT/YE), requesting the courtesy lamps.

- DTC B1319 (Driver Door Ajar Circuit Failure) - is a on-demand DTC that sets when the SJB detects an open on the driver door ajar switch circuit.
- DTC B1327 (Passenger Door Ajar Circuit Failure) - is a on-demand DTC that sets when the SJB detects an open on the passenger door ajar switch circuit.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Door ajar switch
- Dimmer switch
- SJB

D1-D2:

D2-D4:

D4-D8:

D9: