Test U: The Reversing Lamps Are Inoperative

PINPOINT TEST U: THE REVERSING LAMPS ARE INOPERATIVE

U1-U3:

U3-U6:

Normal Operation - Automatic Transaxle
When the transaxle is placed in REVERSE (R), the transmission control module (TCM) sends gear status information to the instrument cluster over the communication network. The instrument cluster acts as a gateway and relays the message to the smart junction box (SJB). When the SJB receives a message indicating the transaxle is in REVERSE (R), the SJB provides ground to an internal relay, which routes the voltage to circuit CBP12 (GN/WH) to the reversing lamps.

Normal Operation - Manual Transaxle
Voltage is supplied to the reversing lamp switch through circuit CBP18 (GY/OG). When the transaxle is placed in REVERSE (R), the reversing lamp switch routes the voltage to circuit CBP12 (GN/WH) to the reversing lamps.

Possible Causes
- Fuse
- Circuit CBP18 (GY/OG) open
- Circuit CBP12 (GN/WH) open
- Reversing lamp switch
- SJB