ENGINE GENERAL INFORMATION AND DIAGNOSIS (M13 ENGINE) 6-2-163
5 Check Radiator Fan Relay
1) Check radiator fan relay referring to “Main
Relay, Fuel Pump Relay and Radiator Fan
Relay Inspection” in Section 6E2.
Is it in good condition?
Go to Step 6. Replace radiator fan relay.
6 Radiator Fan Control Circuit Check
1) Disconnect radiator fan motor connector.
2) Measure resistance between “BLU/RED”
wire terminal of radiator fan motor connec-
tor and “BLU/RED” wire terminal of radiator
fan relay connector.
Is resistance 1
Ω
or less?
Go to Step 7. “BLU/RED” wire circuit
open or poor connection.
7 Radiator Fan Control Circuit Check
1) Measure resistance between “BLU/RED”
wire terminal of radiator fan motor connec-
tor and vehicle body ground.
Is it infinite?
Go to Step 8. “BLU/RED” wire circuit
shorted to ground.
8 Radiator Fan Control Circuit Check
1) Turn ON ignition switch.
2) Measure voltage between “BLU/RED” wire
terminal of radiator fan motor connector and
vehicle body ground.
Is voltage 0 V?
Go to Step 9. “BLU/RED” wire shorted
to power circuit.
9 Radiator Fan Control Circuit Check
1) Measure resistance between “BLK” wire ter-
minal of radiator fan motor connector and
vehicle body ground.
Is resistance 1
Ω
or less?
Replace radiator fan
motor.
“BLK” wire open or high
resistance circuit.
Step Action Yes No
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