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

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

R1-R2:

R2-R4:

R4-R6:

R7:

Normal Operation
When the smart junction box (SJB) receives an input requesting the parking lamps, the SJB energizes an internal relay which routes voltage to the front parking lamps through circuit 1057 (OG/BK), and to the rear parking and license plate lamps through circuit 1058 (BN/WH). The lamps are provided ground through circuit 1205 (BK).

Possible Causes
- Fuse
- Circuit 1057 (OG/BK) open
- Circuit 1058 (BN/WH) open
- Circuit 1205 (BK) open
- Rear lamp jumper harness
- Rear lamp assembly
- SJB