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5. MAF SENSOR Turn the ignition off. Disconnect the MAF Sensor harness connector. Turn the ignition on. Measure the voltage on the MAF Sensor 5-Volt Supply circuit at the Is the voltage below 5.5 volt? Yes >> Replace the MAF Sensor Perform the ECM Verification Test Ver. 1 (Refer to 9 - No >> Go To 6 6. WIRING INSPECTION Turn the ignition off. Inspect the Boost Pressure Sensor 5-Volt supply circuit between the Boost Pressure Sensor harness connector and Inspect the Fuel Pressure Sensor 5-Volt supply circuit between the Fuel Pressure Sensor harness connector and Inspect the MAF Sensor 5-Volt supply circuit between the MAF Sensor harness connector and the ECM harness Were any problems found? Yes >> Repair shorted circuit as necessary. Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). No >> Replace and program the Engine Control Module in accordance with the Service Information. Perform the ECM Verification Test Ver. 1 (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING). 9 - 1142 ENGINE DIESEL DIAG KJ |