ECM performs After-run process (Turning off the internal system process of ECM) in order to shut down the system. If main relay power supply is cut before the After-run for 3 times or 2 sec. afte the After-run, ECM sets DTC P068500. This fault might be caused by open or short to ground in control circuit of main relay
Item | Detecting Condition | Possible Cause | |
DTC Strategy |
•
Voltage monitoring | 1. Poor connector connection 2. Open or short to ground in control circuit of main relay 3. Defected main relay | |
Enable Conditions |
•
Engine running | ||
Threshold Value |
•
Faulty control circuit of main relay | ||
Diagnostic Time |
•
- | ||
Fail Safe | Engine OFF |
•
No | |
EGR Off |
•
No | ||
Torque Limit |
•
No | ||
MIL |
•
Off | ||
