PZ1970

Diagnostic Chart:

Wiring Diagram:

CIRCUIT DESCRIPTION

The PZM may command the exterior lamps on by energizing the appropriate relay via PZM Connector C2 terminals "C9" and "C12." Power for these relays is also provided by the PZM through "Connector C1 terminal".

DTC WILL SET WHEN

The exterior lamps have been commanded on for at least 300ms and the PZM does not see the Exterior Lamp Power "ON" after two consecutive monitoring cycles.

ACTION TAKEN (BY PZM)

The PZM will command the exterior lamps off and attempt to turn the lamps "ON" every 1200ms until the exterior lamps are no longer required.

DTC WILL CLEAR WHEN

The exterior lamps are commanded "ON" and the PZM sees the Exterior Lamp Power active alter two consecutive monitoring cycles.

DTC CHART TEST DESCRIPTION

1. This test determines whether the malfunction is in the components or the wiring.

2. This test determines if the malfunction is in the Headlamps relay.

3. This test determines whether the malfunction is in the Parklamps relay or the PZM.

4. This test checks to see if the surface-mount fuse in the PZM has opened.