Pinpoint Test B: Powertrain Control Module (Pcm) Power Relay

WARNING: This page is about a different variant/trim than selected.

Refer to ELECTRONIC ENGINE CONTROLS - 3.0L GTDI for schematic and connector information.

Normal Operation and Fault Conditions

Refer to the DTC Fault Trigger Conditions.

DTC Fault Trigger Conditions

DTC	Description	Fault Trigger Condition
PCM P0685:00	ECM/PCM Power Relay Control Circuit/Open: No Sub Type Information	Sets when the ISP-R circuit indicates the ignition is in the OFF, ACC, or LOCK mode, and the amount of time the PCM remains powered through the PCM power relay exceeds a predetermined amount of time. Ability to communicate with the PCM when the ignition is in the OFF, ACC, or LOCK mode indicates a hard fault.
PCM P068A:00	ECM/PCM Power Relay De-Energized - Too Early: No Sub Type Information	Sets when the non volatile random access memory write did not complete successfully after the ignition key was turned OFF, prior to PCM shutdown. This DTC also sets when the PCM power relay is de-energized too early.

Possible Sources