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• When Monitored: • Set Condition: Possible Causes (K343) ASD RELAY OUTPUT 2 CIRCUIT (K12) INJECTOR CONTROL NO.2 CIRCUIT OPEN (K12) INJECTOR CONTROL NO.2 CIRCUIT SHORTED TO GROUND FUEL INJECTOR PCM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. ACTIVE DTC Ignition on, engine not running. With a scan tool, read DTCs. Is the DTC active at this time? Yes >> Go To 2 No >> Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 2. (K343) ASD RELAY OUTPUT 2 CIRCUIT Turn the ignition off. Disconnect the No.2 Fuel Injector harness connector. Ignition on, engine not running. With the scan tool, actuate the ASD Relay. Using a 12-volt test light connected to ground, backprobe the (K343) Does the test light illuminate brightly? Yes >> Go To 3 No >> Repair the excessive resistance or short to ground in the (K343) ASD Relay Output 2 circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer 9 - 228 ENGINE ELECTRICAL DIAGNOSTICS LX |