The Electronic Control Module (ECM) has detected a high current condition (short circuit) after attempting to activate the glow plug starting aid.
The ECM detects the following conditions:
- The engine is not cranking.
- The ECM has been powered for at least 1 second.
- There is a high current condition (short circuit) for more than 2 seconds.
System Response:
If equipped, the warning light will come on. The diagnostic code will be logged. An ECM that was previously blank will require a total of 2 hours of operation before the diagnostic code will be logged.
The ECM is unable to activate the relay for the glow plug starting aid. The glow plugs will not operate or the glow plugs will operate all the time.
The engine may be difficult to start in cold temperatures and the exhaust may emit white smoke.
This diagnostic code detects an excessively high current in the circuit for the starting aid relay.
Test Step 1. Perform the following diagnostic procedure: Starting Aid (Glow Plug) Relay Circuit - Test
Results:
- OK - STOP