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3. (K957) MASS AIR FLOW SENSOR GROUND CIRCUIT SHORTED TO VOLTAGE Measure the voltage of the (K957) Mass Air Flow Sensor Ground circuit Is there any voltage present? Yes >> Repair the (K957) Mass Air Flow Sensor Ground circuit for a short to voltage. Perform the ECM Verification Test Ver. 1. (Refer to 9 - No >> Go to 4 4. (K344) FUSED MAIN RELAY OUTPUT CIRCUIT OPEN OR HIGH RESISTANCE Using a 12 volt test light connected to ground, check the (K344) Fused NOTE: The test light should be illuminated and bright. Compare Is the test light illuminated and bright? Yes >> Go to 5 No >> Repair the (K344) Fused Main Relay Output circuit for an open circuit or high resistance. Perform the ECM Verification Test Ver. 1. (Refer to 9 - PM ENGINE ELECTRICAL DIAGNOSTICS - DIESEL 9 - 971 |