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• When Monitored: • Set Condition: Possible Causes EXCESSIVE RESISTANCE IN THE B(+) CIRCUIT BETWEEN THE GENERATOR AND THE BATTERY EXCESSIVE RESISTANCE BETWEEN THE GENERATOR CASE AND GROUND (A804) GEN SENSE CIRCUIT SHORTED TO VOLTAGE (K20) GEN FIELD CONTROL CIRCUIT SHORTED TO VOLTAGE GENERATOR POWERTRAIN CONTROL MODULE (PCM) Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. DTC IS ACTIVE NOTE: Inspect the vehicle for aftermarket accessories that may exceed the Generator system output. NOTE: Inspect the Generator harness connector and the Generator eyelet for corrosion or damage before NOTE: Inspect the condition and tension of the Generator belt before continuing. NOTE: Inspect the battery before continuing. With a scan tool, select View DTCs. Record DTC and Freeze Frame information With a scan tool, clear DTCs. Start the engine and allow it to reach operating temperature. 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. EXCESSIVE RESISTANCE IN THE B(+) CIRCUIT WARNING: When the engine is operating, do not stand in direct line with the fan. Do not put your hands NOTE: Make sure all test equipment and cables are clear of any belts, pulleys, or other moving parts. Start the engine. Is the voltage above 0.4 volts? Yes >> Repair the battery positive (+) circuit between the generator and battery for high resistance. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Go to 3 PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 887 |