Suzuki Grand Vitara 2011 Manual page 332

1A-263 Engine General Information and Diagnosis: For Petrol Engine Model
Step
4 Wire circuit check
1) Disconnect radiator cooling fan relay No.3 from relay
box with ignition switch turned OFF.
2) Turn ON ignition switch.
3) Measure voltage between "BLU/BLK" wire terminal of
radiator cooling fan relay No.3 connector and vehicle
body ground.
Is voltage 10 – 14 V?
5 Radiator cooling fan control check
1) Disconnect connector from radiator cooling fan motor
No.2 with ignition switch turned OFF.
2) Turn ignition switch ON.
3) Measure voltage between "BLU" wire terminal of radiator
cooling fan relay No.3 connector and vehicle body
ground.
Is voltage 0 V?
6 Wire circuit check
1) Measure resistance between "BLU" wire terminals of
radiator cooling fan relay No.3 connector and radiator
cooling fan motor No.2 connector with ignition switch
turned OFF.
Is resistance below 3
7 Wire circuit check
1) Disconnect radiator cooling fan relay No.2 from relay
box.
2) Measure resistance between "BLK" wire terminal of
radiator cooling fan relay No.2 connector and vehicle
body ground.
Is resistance below 3
8 Radiator cooling fan relay check
1) Check radiator cooling fan relay referring to "Radiator
Cooling Fan Relay Inspection: For Petrol Engine Model
in Section 1F".
Is it in good condition?
9 Radiator cooling fan motor check
1) Check radiator cooling fan motor referring to "Radiator
Cooling Fan Motor On-Vehicle Inspection: For Petrol
Engine Model in Section 1F".
Is it in good condition?
Action
Ω
?
Ω
?
Yes
Go to Step 5.
Go to Step 6.
Go to Step 7.
Go to Step 8.
Go to Step 9.
Substitute a known-
good ECM and recheck.
No
"BLU/BLK" wire is open
circuit.
"BLU" wire is shorted to
other circuit.
"BLU" wire is open or
high resistances.
"BLK" wire is open
circuit.
Replace radiator cooling
fan relay.
Replace radiator cooling
fan motor.