Chrysler 300M 2002 Service Manual page 2690

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.
INTERMITTENT CONDITION
FUSED B+ CIRCUIT
ASD RELAY RESISTANCE
ASD RELAY CONTROL CIRCUIT OPEN
ASD RELAY CONTROL CIRCUIT SHORT TO GROUND
PCM
TEST
1 Ignition on, engine not running.
With the DRBIII , actuate the ASD Relay.
Is the ASD Relay operating?
Yes → Go To 2
→ Go To 3
No
2 NOTE: The conditions that set the DTC are not present at this time. The
following list may help in identifying the intermittent condition.
WARNING: WHEN THE ENGINE IS OPERATING, DO NOT STAND IN A
DIRECT LINE WITH THE FAN. DO NOT PUT YOUR HANDS NEAR THE
PULLEYS, BELTS OR FAN. DO NOT WEAR LOOSE CLOTHING.
With the engine running at normal operating temperature, monitor the
DRBIII parameters related to the DTC while wiggling the wire harness. Look for
parameter values to change and/or a DTC to set.
Review the DRBIII Freeze Frame information. If possible, try to duplicate the
conditions under which the DTC was set.
With the DRBIII , actuate the ASD Relay.
Wiggle the wire harness from the ASD Relay to the PCM while the relay is actuating.
Refer to any Technical Service Bulletins (TSB) that may apply.
Visually inspect the related wire harness. Look for any chafed, pierced, pinched, or
partially broken wires.
Visually inspect the related wire harness connectors. Look for broken, bent, pushed
out, or corroded terminals.
Were any of the above conditions present?
Yes → Repair as necessary
→ Test Complete.
No
POSSIBLE CAUSES
ACTION
Perform POWERTRAIN VERIFICATION TEST VER - 5.
DRIVEABILITY - NGC
261
APPLICABILITY
All
All