DTC P1490: Low Speed Fan Control Relay Circuit: Description

Circuit is monitored with ignition on and battery voltage is more than 10 volts. DTC will set when an open or short condition is detected in low speed radiator fan relay control circuit. Possible causes are: fused ignition switch output circuit open, low speed radiator fan relay control circuit open or shorted to ground, defective low speed radiator fan relay or defective PCM.