Test T: The Reversing Lamps Are Inoperative

PINPOINT TEST T: THE REVERSING LAMPS ARE INOPERATIVE

T1:

T2-T4:

Normal Operation
When the ignition switch is in the RUN position, voltage is provided to the digital transmission range (TR) sensor from the central junction box (CJB) through circuit 1789 (VT/WH). When the transmission is placed in REVERSE (R), the digital TR sensor routes voltage to the reversing lamps through circuit 140 (BK/PK). The reversing lamps share a ground with the license plate lamps through circuit 57 (BK).

Possible Causes
- Fuse
- Circuit 57 (BK) open
- Circuit 140 (BK/PK) open
- Circuit 1789 (VT/WH) open
- Digital TR sensor