FI SYSTEM DIAGNOSIS 4-93 “C60” (P0480) COOLING FAN RELAY CIRCUIT MALFUNCTION DETECTED CONDITION POSSIBLE CAUSE Cooling fan relay signal is not input to ECM. • Cooling fan relay circuit open or short • ECM malfunction ECM Cooling fan Engine stop Side-stand Ignition relay switch relay switch FAR G/R O/W To Side-stand switch Cooling fan motor INSPECTION 1 Step 1 1) Turn the ignition switch OFF. E 2)Remove the front seat. (8-7) 3)Check the cooling fan relay coupler for loose or poor contacts. L If OK, then inspection the cooling fan relay. (7-7) P AM Is the cooling fan relay OK? 1 S ECM coupler (Harness side) • O/W and G/R wire open or shorted to ground, (Black) (Gray) or poor c connection • If wire and connection are OK, intermittent trou- YES ble or faulty ECM. • Recheck each terminal and wire harness for open circuit and poor connection. • Replace the ECM with a known good one, and inspect it again. NO Replace the cooling fan relay with a new one. 4)After repairing the trouble, clear the DTC using SDS tool. (4-27)