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EC-862 < COMPONENT DIAGNOSIS > [VK56DE] COOLING FAN COOLING FAN Description INFOID:0000000003936846 COMPONENT DESCRIPTION Cooling Fan Motor The cooling fan operates at each speed when the current flows in the cooling fan motor as per the following. Diagnosis Procedure INFOID:0000000003936847 1. CHECK IPDM E/R POWER SUPPLY AND GROUND CIRCUIT . OK or NG OK >> GO TO 2. NG >> Follow the instructions on . 2. CHECK COOLING FAN MOTOR POWER SUPPLY CIRCUIT FOR OPEN AND SHORT 1. Turn ignition switch OFF. 2. Disconnect IPDM E/R harness connector E120. 3. Disconnect cooling fan motor (1) harness connector. 4. Check harness continuity between the following terminals; 5. Also check harness for short to ground and short to power. OK or NG OK >> GO TO 3. NG >> Repair open circuit or short to ground or short to power in harness or connectors. 3. CHECK COOLING FAN MOTER GROUND CIRCUIT FOR OPEN OR SHORT 1. Check harness continuity between the following terminals; 2. Also check harness for short to power. OK or NG OK >> GO TO 4. NG >> Repair open circuit or short to power in harness or connectors. 4. CHECK COOLING FAN MOTOR EC-863, "Component Inspection" OK or NG OK >> GO TO 5. Cooling fan speed Cooling fan motor terminals (+) ( − ) Low (LOW) 1 3 and 4 2 3 and 4 High (HI) 1 and 2 3 and 4 Continuity should exist. ALBIA0355ZZ Continuity should exist. 2009 Pathfinder |