Test C: The Courtesy Lamps Stay On Continuously

PINPOINT TEST C: THE COURTESY LAMPS STAY ON CONTINUOUSLY

C1-C4:

C4-C8:

C9:

Normal Operation
When any door, the liftgate or the liftgate glass is opened, the ajar switch opens the circuit to the smart junction box (SJB). The SJB monitors the ajar circuits, and based on the ajar status, the SJB will supply voltage to the courtesy lamps on circuit CLN03 (YE/GY).

DTC B1319 - sets when the SJB detects a switch/circuit failure on the LF door ajar circuit.

DTC B1327 - sets when the SJB detects a switch/circuit failure on the RF door ajar circuit.

DTC B1335 - sets when the SJB detects a switch/circuit failure on the RR door ajar circuit.

DTC B1571 - sets when the SJB detects a switch/circuit failure on the LR door ajar circuit.

DTC B1895 - sets when the SJB detects a output circuit failure on the LF, RF door ajar circuit.

DTC B1896 - sets when the SJB detects a short to voltage on the LF, RF, LR, RR door ajar circuit.

DTC B2077 - sets when the SJB detects a switch/circuit failure on the liftgate door ajar circuit.

Possible Causes
- Circuit CLN03 (YE/GY) short to voltage
- Circuit CLN28 (GN/BU) short to ground
- Circuit CPL26 (GN/VT) open
- Circuit CPL31 (GN/BK) open
- Circuit CPL36 (GN) open
- Circuit CPL39 (YE) open
- Circuit CPL44 (YE/OG) open
- Circuit CPL58 (GY/OG) open
- Circuit GD143 (BK/VT or BK/OG) open
- Dimmer control switch
- Ajar switch
- SJB