Test T: The Reversing Lamps Are Inoperative

PINPOINT TEST T: THE REVERSING LAMPS ARE INOPERATIVE

T1:

T1-T3:

T3-T4:

T4 Continued:

Normal Operation
Switched battery voltage is normally provided to the digital transmission range (TR) sensor (automatic transmission) or to the reversing lamp switch (manual transmission) through circuit 295 (LB/PK). When the transmission is placed in REVERSE (R), the digital TR sensor or reversing lamp switch routes voltage through circuit 1043 (DG/YE) to the reversing lamps. Ground is provided to the reversing lamps through circuit 57 (BK).

NOTE: For early build vehicles, circuit 1043 (DG/YE) changes to circuit 140 (BK/PK) for the rear lamp wiring harness.

Possible Causes
- Fuse
- Circuit 57 (BK) open
- Circuit 140 (BK/PK) open (early build vehicles only)
- Circuit 295 (LB/PK) open
- Circuit 1043 (DG/YE) open
- Digital TR sensor (automatic transmission)
- Reversing lamp switch (manual transmission)