Test M: One Or More Parking, Rear Or License Plate Lamp Is Inoperative

PINPOINT TEST M: ONE OR MORE PARKING, REAR OR LICENSE PLATE LAMP IS INOPERATIVE

M1-M3:

M3-M5:

M5-M7:

M7-M9:

M9-M11:

Normal Operation
The smart junction box (SJB) sends a voltage reference signal to the headlamp switch through circuit 1401 (BK/LG). When the headlamp switch is placed in the PARKING LAMPS ON position, the SJB provides voltage to the parking, rear, license plate and side marker lamps. The lamps are grounded through circuit 1205 (BK).

DTC B2035 - sets when the SJB detects an open or short to ground to all the side marker lamps voltage supply circuit.

DTC B2491 - sets when the SJB detects an open to the RH front parking lamp voltage supply circuit.

DTC B2493 - sets when the SJB detects an open to the LH front parking lamp voltage supply circuit.

DTC B2523 - sets when the SJB detects an open or short to ground to both license plate lamps and both rear lamp 3 voltage supply circuits.

Possible Causes
- Circuit 14 (BN) open or short to ground
- Circuit 667 (WH/RD) open or short to ground
- Circuit 1205 (BK) open
- Circuit 1339 (BK/PK) open or short to ground
- Circuit 1340 (DG) open or short to ground
- Circuit 1361 (RD/PK) open or short to ground
- Circuit 1366 (TN/RD) open or short to ground
- Circuit 1364 (DB/YE) open or short to ground
- Circuit 1370 (DG/LG) open or short to ground
- Circuit 1729 (DB/YE) open or short to ground
- Circuit 1784 (TN/RD) open or short to ground
- BEC
- SJB