|
|
6. ENGINE CONTROL MODULE (ECM) Turn the ignition off. Inspect the (K853) Crankshaft Position Sensor 5 Volt Supply circuit between the Crankshaft Position Sensor and the Inspect the (K854) Boost Pressure Sensor 5 Volt Supply circuit between the Intake Air Temperature/Boost Pressure Inspect the (F855) Accelerator Pedal Position Sensor No. 2 5 Volt Supply circuit between the Accelerator Pedal Inspect the (F851) Mass Airflow Sensor 5 Volt Supply circuit between the Mass Airflow Sensor and the ECM. 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 ECM VERIFICATION TEST. (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. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) PM ENGINE ELECTRICAL DIAGNOSTICS - DIESEL 9 - 1275 |