B2478

Circuit Description
When the 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 "D3" is measured every 1000ms.

DTC Will Set When:
The PZM determines the voltage at Connector C2 terminal "D3" is not at ground potential for at least 2 seconds.

DTC Will Clear When:
The PZM determines the voltage at Connector C2 terminal "D3" is greater than ground for at least one monitoring cycle.

Troubleshooting Hints
Check CKT 981 (DK GRN) for a short to voltage.