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3. (K857) 5 VOLT SUPPLY CIRCUIT SHORTED TO VOLTAGE Turn the ignition off. Disconnect the MAP Sensor harness connector. Turn the ignition on. Measure the voltage on the (K857) 5 Volt Supply circuit. Is there any voltage present? Yes >> Repair the (K857) 5 Volt Supply circuit for a short to volt- age. Perform the PCM Verification Test Ver. 1 (Refer to 9 - No >> Go to 4 4. POWERTRAIN CONTROL MODULE (PCM) Turn the ignition off. Inspect the (K858) 5 Volt Supply circuit between the Accelerator Pedal Position Sensor harness connector and the Inspect the (K857) 5 Volt Supply circuit between the Camshaft 1/1 Position Sensor harness connector and the PCM Inspect the (K857) 5 Volt Supply circuit between the Manifold Flow Valve harness connector and the PCM harness Inspect the (K857) 5 Volt Supply circuit between the MAP Sensor harness connector and the PCM harness con- Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out or corroded terminals. Refer to any Technical Service Bulletins that may apply. Were any problems found? Yes >> Repair as necessary. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Replace and program the Powertrain Control Module in accordance with the Service Information. Perform the PCM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). PM ENGINE ELECTRICAL DIAGNOSTICS - GPEC 9 - 599 |