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P0480-COOLING FAN 1 CONTROL CIRCUIT (CONTINUED) 3. LOW SPEED RADIATOR FAN RELAY RESISTANCE Measure the resistance of the Low Speed Radiator Fan Relay Coil. Is the resistance between 60 to 80 ohms? Yes >> Go To 4 No >> Replace the Low Speed Radiator Fan Relay. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 4. (N201) COOLING FAN NO.1 CONTROL CIRCUIT OPEN Disconnect the C3 FCM harness connector. Measure the resistance of the (N201) Cooling Fan No.1 Relay Control circuit from the Relay to the C3 FCM harness Is the resistance below 5.0 ohms? Yes >> Go To 5 No >> Repair the open in the (N201) Cooing Fan No.1 Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 5. (N201) COOLING FAN NO.1 CONTROL CIRCUIT SHORTED TO GROUND Measure the resistance between ground and the (N201) Cooling Fan No.1 Relay Control circuit at the Relay con- Is the resistance below 100 ohms? Yes >> Repair the short to ground in the (N201) Cooling Fan No.1 Relay Control circuit. Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) No >> Go To 6 6. FRONT CONTROL MODULE NOTE: Before continuing, check the FCM harness connector terminals for corrosion, damage, or terminal Were there any problems found? Yes >> Repair as necessary. Perform BODY VERIFICATION TEST-VER 1. No >> Replace Front Control Module per Service Information. Perform BODY VERIFICATION TEST-VER 1. 9 - 528 ENGINE ELECTRICAL DIAGNOSTICS WK |