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Symptom: P0480-LOW SPEED FAN CONTROL RELAY CIRCUIT When Monitored and Set Condition: P0480-LOW SPEED FAN CONTROL RELAY CIRCUIT When Monitored: With the ignition on. Battery voltage greater than 10 volts. Set Condition: An open or shorted circuit is detected in the radiator fan relay control circuit. One Trip Fault. POSSIBLE CAUSES RADIATOR FAN RELAY INTERMITTENT OPERATION INTERMITTENT CONDITION GROUND CIRCUIT FUSED B+ OUTPUT CIRCUIT POWERTRAIN CONTROL MODULE RADIATOR FAN RELAY CONTROL CIRCUIT SHORT TO GROUND RADIATOR FAN RELAY CONTROL CIRCUIT OPEN (IPM) RADIATOR FAN RELAY CONTROL CIRCUIT OPEN (PCM) RADIATOR FAN RELAY CONTROL CIRCUIT SHORTED TO GROUND (IPM) RADIATOR FAN RELAY CONTROL CIRCUIT SHORT TO GROUND (PCM) INTEGRATED POWER MODULE (OPEN) INTEGRATED POWER MODULE (SHORD) TEST ACTION APPLICABILITY 1 Turn the ignition on. t, actuate the Radiator Fan Relay. Are both Radiator Fan operating? All Yes → Go To 2 No → Go To 3 2 Turn the ignition on. t, actuate the Radiator Fan Relay. Wiggle the wiring harness from the Radiator Fan Relay to the PCM while the relay All Yes → Repair as necessary. Perform POWERTRAIN VERIFICATION TEST VER - 5. No → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. 375 DRIVEABILITY - NGC |