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10. FUEL INJECTOR Turn the ignition off. Disconnect the No.2 Fuel Injector harness connector. Ignition on, engine not running. NOTE: When a Misfire is detected for a particular cylinder, the PCM Using a 12-volt test light connected to 12-volts, probe the (K12) Injector With the scan tool, actuate the Fuel Injector. Does the test light blink/flicker? Yes >> Replace the Fuel Injector. Perform the POWERTRAIN VERIFICATION TEST. (Refer to No >> Go To 11 11. (K12) INJECTOR CONTROL NO.2 CIRCUIT Turn the ignition off. Disconnect the C2 PCM harness connector. CAUTION: Do not probe the PCM harness connectors. Probing the Was a problem found with the (K12) Injector Control No.2 cir- Yes >> Repair the excessive resistance or short in the (K12) Injec- tor Control No.2 circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to No >> Go To 16 12. FUEL SUPPLY LINE RESTRICTED Turn the ignition off. WARNING: The fuel system is under a constant pressure (even with the engine off). Before testing or ser- Install special tool #6539 (5/16 9 ) #6631(3/8 9 ) fuel line adapter and the fuel pressure gauge between the fuel supply line and the fuel pump module. Ignition on, engine not running. With the scan tool, actuate the ASD Fuel System test and observe the fuel pressure gauge. 9 - 250 ENGINE ELECTRICAL DIAGNOSTICS KJ |