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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 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). 4. 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 Was the resistance above 10.0 ohms at any time while wiggling Yes >> Repair the ASD Relay Control circuit for an intermittent open. Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Replace and program the Engine Control Module in accor- dance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - 9 - 1178 ENGINE DIESEL DIAG KJ |