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P0642-LOW VOLTAGE AT THE #2 SENSOR SUPPLY CIRCUIT (CONTINUED) For the Engine circuit diagram (Refer to 9 - ENGINE - SCHEMATICS AND DIAGRAMS) For a complete wiring diagram Refer to Section 8W. • When Monitored: • Set Condition: Possible Causes FAN CLUTCH ASSEMBLY (K668) 5-VOLT SHORTED TO GROUND (K668) 5-VOLT SUPPLY SHORTED TO ANOTHER CIRCUIT FAN DTC INTERMITTENT CONDITION ECM Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - Diagnostic Test 1. FAN CLUTCH ASSEMBLY Disconnect the Fan clutch harness connector. NOTE: Check connectors - Clean/repair as necessary. Did P0483 set? Yes >> Replace the Fan clutch assembly. Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 8 - ELECTRICAL/ELEC- No >> Go To 2 9 - 1362 ENGINE - ELECTRICAL DIAGNOSTICS - DIESEL DR/DH |