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Symptom: *NO RESPONSE FROM ENGINE CONTROL MODULE POSSIBLE CAUSES CHECK POWERS AND GROUNDS TO THE ENGINE CONTROL MODULE K-ECM CIRCUIT SHORTED TO GROUND K-ECM CIRCUIT SHORTED TO VOLTAGE K-ECM CIRCUIT OPEN ENGINE CONTROL MODULE TEST ACTION APPLICABILITY 1 Turn the ignition off. All Yes → Refer to the wiring diagrams located in the service information to help isolate an open or shorted condition. Repair as necessary. No → Go To 2 2 Turn the ignition off. t from the DLC. Measure the resistance between ground and the K-ECM circuit. All Yes → Repair the K-ECM circuit for a short to ground. Perform ROAD TEST VERIFICATION - VER-2. No → Go To 3 3 Turn the ignition off. t from the DLC. Disconnect the ECM harness connectors. All Yes → Repair the K-ECM circuit for a short to voltage. Perform ROAD TEST VERIFICATION - VER-2. No → Go To 4 12 COMMUNICATION |