Test U: The Individual Reversing Lamp Is Inoperative

PINPOINT TEST U: THE INDIVIDUAL REVERSING LAMP IS INOPERATIVE

U1-U2:

U2-U4:

Normal Operation
When the transmission is in REVERSE, the smart junction box (SJB) sends voltage through circuit 1362 (DG/OG) and circuit 1367 (WH/YE) to the LH and RH reversing lamps respectively. Ground is supplied individually to the reversing lamps through circuit 1205 (BK).

Possible Causes
- Circuit 1362 (DG/OG) open or short to ground
- Circuit 1367 (WH/YE) open or short to ground
- Circuit 1205 (BK) open
- SJB