B2478

Wiring Schematic:

CIRCUIT DESCRIPTION
When the body control module (PZM) receives a class 2 serial data message that the transaxle is in reverse, the PZM energizes the reverse lamp relay and the backup lamps are turned on. When the PZM has commanded the backup lamps on, the voltage at connector C2 terminal D14 is measured every 1000 ms.

CONDITIONS FOR SETTING THE DTC
The PZM determines the voltage at connector C2 terminal D14 is not at ground potential for at least 2 seconds.

DTC WILL CLEAR WHEN
The PZM determines the voltage at connector C2 terminal D14 is greater than ground for at least 1 monitoring cycle.

TROUBLESHOOTING HINTS
Inspect CKT 646 (DK GRN) for a short to voltage.