P0685 - ECM/Pcm Power Relay Control Circuit/Open - DTC Chart
P0685 - ECM/PCM POWER RELAY CONTROL CIRCUIT/OPEN - DTC CHART
| Description: This DTC sets when the ignition switch position run (ISP-R) circuit indicates the ignition is in the OFF, ACC, or LOCK position, and the amount of time the PCM remains powered through the PCM power relay exceeds a predetermined amount of time. | |||
Possible Causes:
|
|||
| Diagnostic Aids: Ability to communicate with the PCM when the ignition is in the OFF, ACC, or LOCK position indicates a hard fault. | |||
| Application | Key On Engine Off | Key On Engine Running | Continuous Memory |
| All | GO to Pinpoint Test B : | ||