Symptom:
P0685-ASD RELAY CONTROL CIRCUIT
When Monitored and Set Condition:
P0685-ASD RELAY CONTROL CIRCUIT
When Monitored: With ignition on. Battery voltage above 10 volts.
Set Condition: An open or shorted condition is detected in the ASD relay control circuit.
One trip Fault.
POSSIBLE CAUSES
ASD OPERATION
(A14) FUSED B+ CIRCUIT
ASD RELAY RESISTANCE
(K51) ASD RELAY CONTROL CIRCUIT OPEN
(K51) ASD RELAY CONTROL CIRCUIT SHORT TO GROUND
PCM
TEST ACTION APPLICABILITY
1 Ignition on, engine not running.
With the DRBIIIt, actuate the ASD Relay.
Is the ASD Relay operating?
All
Yes → Refer to the INTERMITTENT CONDITION symptom in the
Driveability category.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
No → Go To 2
2 Turn the ignition off.
Remove the ASD Relay from the PDC.
Ignition on, engine not running.
Measure the voltage of the (A14) Fused B+ circuits in the PDC.
Is the voltage above 11.0 volts?
All
Yes → Go To 3
No → Repair the (A14) Fused B+ circuit. Check and replace any open
fuses.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
3 Turn the ignition off.
Remove the ASD Relay from the PDC.
Measure the resistance of the ASD Relay between the Fused B+ terminal and the
ASD Relay Control terminal.
Is the resistance between 60 to 85 ohms?
All
Yes → Go To 4
No → Replace the ASD Relay.
Perform POWERTRAIN VERIFICATION TEST VER-5-NGC.
238
DRIVEABILITY - NGC
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