Engine Control Relay Shuts Off Too Late

Test 1 - Test 2:

Test 3 - Test 5:

Test 6:

SYMPTOM
P1610-ENGINE CONTROL RELAY SHUTS OFF TOO LATE

WHEN MONITORED
During after-run.

SET CONDITION
The internal ECM timer determines that the Engine Control Relay remains on for more than 2.0 seconds after the ECM has turned off the Engine Control Relay.

POSSIBLE CAUSES
- Check for other DTCs
- Intermittent condition
- Substitute engine control relay
- Engine control relay control circuit shorted to ground intermittently
- Engine control relay output circuit shorted to voltage
- Engine control module