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6. ENGINE CONTROL MODULE (ECM) Using the wiring diagram/schematic as a guide, inspect the wiring and connectors between the A/C Clutch Relay 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 Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) No >> Replace the Engine Control Module (ECM) in accordance with the Service Information. Perform the ECM Verification Test Ver. 1. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING) 9 - 1556 ENGINE ELECTRICAL DIAGNOSTICS - DIESEL LX |