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Symptom:
P0685-ASD RELAY CONTROL CIRCUIT SHUTS OFF TOO LATE
When Monitored and Set Condition:
P0685-ASD RELAY CONTROL CIRCUIT SHUTS OFF TOO LATE
When Monitored: During after-run.
Set Condition: The internal ECM timer determines that the ASD Relay remains on for
more than 2.0 seconds after the ECM has turned off the ASD Relay.
CHECK FOR OTHER DTCS
INTERMITTENT CONDITION
SUBSTITUTE ASD RELAY
ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND INTERMITTENTLY
ASD RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
ENGINE CONTROL MODULE
TEST
1
Turn the ignition on.
With the DRB, check for additional DTCs.
Are other DTCs present?
Yes → Refer to the Symptom List for diagnosis of the other DTCs before
→ Go To 2
No
2
Turn the ignition on.
With the DRB, erase ECM DTCs.
Perform several ignition key cycles, pausing for at least 10 seconds between each
cycle.
Turn the ignition on.
With the DRB, read ECM DTCs.
Did this DTC set again?
Yes → Go To 3
→ Go To 6
No
POSSIBLE CAUSES
ACTION
continuing.
Perform ROAD TEST VERIFICATION - VER-2.
DRIVEABILITY - DIESEL
151
APPLICABILITY
All
All
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