A/C Condenser Cooling Fan Control System Inspection: Troubleshooting

TROUBLESHOOTING CHART

Step	Action	YES	NO
1	Check A/C condenser fan control system Is A/C condenser fan started when A/C is operating?	System is in good condition.	Go to Step 2.
2	Check A/C condenser fan relay and its circuit Connect scan tool to DLC with ignition switch OFF. Check pending DTC and DTC with scan tool. Is DTC P0482 displayed?	Go to DTC P0481: FAN 2 CONTROL CIRCUIT (NON-EVAP-LEAK-CHECK MODEL) .	Go to Step 3.
3	Check A/C refrigerant Check amount of A/C refrigerant referring to MANUAL TYPE . Is it good condition?	Go to Step 4.	Recharge refrigerant.
4	Check wire circuit Disconnect A/C condenser cooling fan relay from fuse box No.2 with ignition switch turned OFF. Turn ON ignition switch, measure voltage between engine ground and "BLU/YEL" wire terminal of A/C condenser cooling fan relay connector. Is voltage 10 - 14V?	Go to Step 7.	Go to Step 5.
5	Check wire circuit Disconnect A/C compressor relay from fuse box No.2 with ignition switch turn OFF. Turn ON ignition switch, measure voltage between engine ground and "BLU/YEL" wire terminal of A/C compressor relay connector. Is voltage 10 - 14 V?	Faulty A/C compressor relay.	Go to Step 6.
6	Check wire circuit Remove "A/C" fuse "20 A" from fuse box No.2 with ignition switch turned OFF. Measure resistance between "BLU/YEL" wire terminal of main fuse connector and engine ground. Is resistance infinity?	Open wire in "BLU/YEL" circuit. If OK, go to Step 7.	"BLU/YEL" wire shorted to ground circuit.
7	Check wire circuit Disconnect connector from A/C condenser cooling fan with ignition switch tun OFF. Measure resistance between engine ground and "RED" wire terminal of A/C condenser fan connector. Is resistance infinity?	Go to Step 8.	"RED" wire shorted to ground circuit.
8	Check A/C condenser cooling fan control relay Check A/C condenser cooling fan control relay referring to MANUAL TYPE . Is result in good condition?	Go to Step 9.	Replace relay.
9	Check wire circuit Install "A/C" fuse "20 A" to fuse box No.2. Connect A/C condenser cooling fan relay to fuse box No.2 with ignition switch turn OFF. Start engine then turn ON A/C switch and blower motor switch. Measure voltage between engine ground and "RED" wire terminal in A/C condenser fan harness connector. Is voltage 10 - 14 V?	Go to Step 10.	Open wire in "RED" circuit.
10	Check wire circuit Disconnect connector from A/C condenser cooling fan with ignition switch turned OFF. Measure resistance between "BLK" wire terminal of A/C condenser cooling fan connector and engine ground. Is resistance below 1 Ω?	Go to Step 11.	Open or high resistance wire in "BLK" circuit.
11	Check A/C condenser cooling fan Check A/C condenser cooling fan operates referring to MANUAL TYPE . Is it good condition?	Substitute a known-good ECM and recheck.	Faulty A/C condenser cooling fan.