P068A

P068A-ECM RELAY OFF TOO EARLY





For a complete wiring diagram Consult Diagrams/Electrical

- 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.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.Initial Inspection and Diagnostic Overview

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. Verification Tests

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.Intermittent Condition

3. ASD RELAY
Turn the ignition off.
Install a substitute 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. Verification Tests

4. (K342) ASD RELAY CONTROL CIRCUIT OPEN INTERMITTENTLY
Turn the ignition off.
Remove the ASD Relay from the PDC.
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 PDC.
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. Verification Tests

No

- Replace and program the Engine Control Module.
- Perform the ECM Verification Test Ver. 1. Verification Tests