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• When Monitored: • Set Condition: Possible Causes INTERMITTENT DTC (K343) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE (K11) INJECTOR 1 CONTROL CIRCUIT OPEN OR HIGH RESISTANCE FUEL INJECTOR 1 POWERTRAIN CONTROL MODULE (PCM) Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. DTC IS ACTIVE Turn the ignition on. With the scan tool, select View DTCs. Is the status Active for this DTC? Yes >> Go to 2 No >> Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 2. (K343) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE Turn the ignition off. Disconnect the Fuel Injector 1 harness connector. Turn the ignition on. Using a 12 volt test light connected to ground, check the (K343) Fused NOTE: The test light should be illuminated and bright. Compare Is the test light illuminated and bright? Yes >> Go to 3 No >> Repair the (K343) Fused Main Relay Output circuit for an open circuit or high resistance. Perform the PCM Verification Test Ver. 1 (Refer to 9 - PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 191 |