Chrysler 300/300 Touring/300C, Dodge Magnum. Manual — part 1393
•
When Monitored:
When the ignition is turned off, during after-run mode of operation.
•
Set Condition:
The internal ECM timer determines that the ASD Relay has shut off before the AFTER-RUN mode of operation
has been completed.
Possible Causes
CHECK FOR OTHER DTCS
INTERMITTENT CONDITION
SUBSTITUTE ASD RELAY
(K51) ASD RELAY CONTROL CIRCUIT OPEN INTERMITTENTLY
ENGINE CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
CHECK FOR OTHER DTCS
Turn the ignition on.
With the scan tool, check for additional DTCs.
Are other DTCs present?
Yes
>> Refer to the Symptom List for diagnosis of the other DTCs before continuing.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go To 2
2.
CLEAR CODE AND CHECK IF THE DTC RESETS
With the scan tool, erase ECM DTCs.
Perform several ignition key cycles, pausing for at least 10 seconds between each cycle.
Turn the ignition on.
With the scan tool, read ECM DTCs.
Did this DTC set again?
Yes
>> Go To 3
No
>> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
3.
ASD RELAY
Turn the ignition off.
Install a known good relay in place of the ASD Relay.
Turn the ignition on.
With the scan tool, erase ECM DTCs.
Perform several ignition key cycles, pausing for at least 10 seconds between each cycle.
Turn the ignition on.
With the scan tool, read ECM DTCs.
Did this DTC set again?
Yes
>> Go To 4
No
>> Replace the ASD Relay.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
4.
(K51) ASD RELAY CONTROL CIRCUIT OPEN INTERMITTENTLY
Turn the ignition off.
Remove the ASD Relay from the IPM.
Disconnect the ECM harness connectors.
Measure the resistance of the ASD Relay Control circuit while wiggling the wiring harness and connectors between
the ECM and the IPM.
Was the resistance above 10.0 ohms at any time while wiggling the wiring harness and connectors?
Yes
>> Repair the ASD Relay Control circuit for an intermittent open.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Replace and program the Engine Control Module in accordance with the Service Information.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1597
P068B-ECM RELAY OFF TOO LATE
For a complete wiring diagram Refer to Section 8W
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ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
LX
•
When Monitored:
When the ignition is turned off, during AFTER-RUN mode of operation.
•
Set Condition:
The internal ECM timer determines that the ASD Relay remained on for 2.0 seconds once AFTER-RUN mode
of operation has been completed.
Possible Causes
CHECK FOR OTHER DTCS
INTERMITTENT CONDITION
SUBSTITUTE ASD RELAY
(K51) ASD RELAY CONTROL CIRCUIT SHORTED TO GROUND INTERMITTENTLY
ASD RELAY OUTPUT CIRCUIT SHORTED TO VOLTAGE
ENGINE CONTROL MODULE
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE -
DIAGNOSIS AND TESTING)
Diagnostic Test
1.
CHECK FOR OTHER DTCS
Turn the ignition on.
With the scan tool, check for additional DTCs.
Are other DTCs present?
Yes
>> Refer to the Symptom List for diagnosis of the other DTCs before continuing.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
No
>> Go To 2
2.
CLEAR CODE AND CHECK IF THE DTC RESETS
Perform several ignition key cycles, pausing for at least 10 seconds between each cycle.
Turn the ignition on.
With the scan tool, read ECM DTCs.
Did this DTC set again?
Yes
>> Go To 3
No
>> Go To 6
3.
ASD RELAY
Turn the ignition off.
Install a known good relay in place of the ASD Relay.
Turn the ignition on.
With the scan tool, erase DTCs.
Perform several ignition key cycles, pausing for at least 10 seconds between each cycle.
Turn the ignition on.
With the scan tool, read ECM DTCs.
Did this DTC set again?
Yes
>> Go To 4
No
>> Replace the ASD Relay.
Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)
LX
ENGINE ELECTRICAL DIAGNOSTICS - DIESEL
9 - 1599
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