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Symptom: P0481-COOLING FAN 2 CONTROL CIRCUIT When Monitored and Set Condition: P0481-COOLING FAN 2 CONTROL 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 HIGH SPEED RADIATOR FAN RELAY OPERATION (A110) FUSED IGNITION SWITCH OUTPUT CIRCUIT HIGH SPEED RADIATOR FAN RELAY RESISTANCE (C27) HIGH SPEED RAD FAN RELAY CONTROL CIRCUIT OPEN (C27) HIGH SPEED RAD FAN RELAY CONTROL CIRCUIT SHORT TO GROUND PCM TEST ACTION APPLICABILITY 1 Turn the ignition on. t, actuate the High Speed Radiator Fan Relay. Is the High Speed Radiator Fan Relay operating? All Yes → Refer to the INTERMITTENT CONDITION symptom in the Driveability category. No → Go To 2 2 Turn the ignition off. All Yes → Go To 3 No → Repair the (A110) Fused Ignition Switch Output circuit. Check and replace any open fuses. 410 DRIVEABILITY - NGC |