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DTC Detecting Condition and Trouble Area

DTC detecting condition

Trouble area

P0480: Fan 1 Control Circuit
This DTC is detected if any one of the following conditions is met.

Monitor signal of radiator cooling fan relay No. 1 drive circuit is high level (OFF) for 5 sec. even if command signal of radiator cooling fan is at low speed.
Monitor signal of radiator cooling fan relay No. 1 drive circuit is low level (ON) for 5 sec. even if command signal of radiator cooling fan is NOT at low speed.

(2 D/C detection logic but MIL does not light up)

Radiator cooling fan relay No. 1 (coil side) and/or its circuit
ECM