Test W: The Reversing Lamps Are On Continuously

PINPOINT TEST W: THE REVERSING LAMPS ARE ON CONTINUOUSLY

Normal Operation
The PCM receives transaxle gear status from the transmission control module (TCM). When the PCM detects the transaxle in REVERSE (R), the PCM provides ground for the reversing lamps relay coil through circuit CLS28 (BU/WH). Voltage is supplied from the battery junction box (BJB) to the coil and the switched side of the reversing lamps relay through circuit SBB26 (YE/RD). When the reversing lamps relay is energized, voltage is routed to the reversing lamps through circuit CLS10 (GN/BN).

Voltage is also routed to the rear view mirror and the parking aid module (if equipped).

- DTC P1910 Reverse Lamp Control Circuit/Open - sets when the PCM detects no voltage on the reversing lamp relay coil ground control circuit (if the coil ground control circuit is short to ground).

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Reversing lamps relay
- Rear view mirror
- Parking aid module
- PCM

W1-W7:

W8: