Test M: The Reversing Lamps Are On Continuously

PINPOINT TEST M: THE REVERSING LAMPS ARE ON CONTINUOUSLY

M1-M6:

Normal Operation - Vehicles Not Equipped With TorqShift
When the transmission is placed in REVERSE (R), the digital transmission range (TR) sensor routes voltage to the reversing lamps through circuit 140 (BK/PK).

Normal Operation - Vehicles Equipped With TorqShift
The reversing lamp relay coil ground is supplied and controlled by the powertrain control module (PCM) through circuit 1362 (DG/OG). When the transmission is placed in REVERSE (R), the PCM provides a ground for the reversing lamp relay coil, energizing the relay. When the reversing lamp relay is energized, the reversing lamp relay routes voltage to the reversing lamps through circuit 140 (BK/PK).

Possible Causes
- Circuit 140 (BK/PK) short to voltage
- Circuit 1362 (DG/OG) short to ground
- Digital TR sensor
- Reversing lamp relay
- PCM