Suzuki Grand Vitara Service Manual page 258
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Also See for Grand Vitara:
- Owner's manual (1736 pages) ,
- Service manual (836 pages) ,
- Supplementary service manual (481 pages)
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1A-251 Engine General Information and Diagnosis:
Step
1
Is there DTC(s) of ECT sensor circuit (DTC P0116 / P0117 /
P0118) and/or radiator cooling fan circuit (DTC P0480)?
2
Low speed radiator cooling fan control circuit check
1) Connect scan tool to DLC with ignition switch turned
OFF.
2) Start engine and select "DATA LIST" mode on scan tool.
3) Warm up engine until coolant temp. is 97.5 °C, 207.5 °F
or higher and A/C switch turns OFF (if equipped with A/
C). (If engine coolant temp. dose not rise, check engine
cooling system or ECT sensor.)
Is radiator cooling fan started at low speed when engine
coolant temp. reached above temp.?
3
Wire circuit check
1) Disconnect radiator cooling fan relay No.1 from relay
box with ignition switch turned OFF.
2) Turn ON ignition switch.
3) Measure voltage between "BLU/WHT" wire terminal of
radiator cooling fan relay No.1 connector and vehicle
body ground.
Is voltage 10 – 14 V?
4
Radiator cooling fan control check
1) Disconnect connector from radiator cooling fan motor
No.1 and connect radiator cooling fan relay No.1 with
ignition switch turned OFF.
2) Run engine until ECT is over 97.5 °C, 207.5 °F.
3) Measure voltage between "BLU/RED" wire terminals of
radiator cooling fan motor No.1 connector and vehicle
body ground.
Is voltage 10 – 14 V?
5
Wire circuit check
1) Disconnect radiator cooling fan relay No.1 from relay
box with ignition switch turned OFF.
2) Measure resistance between "BLU/RED" wire terminals
of radiator cooling fan relay No.1 connector and radiator
cooling fan motor No.1 connector.
Is resistance below 3
6
Wire circuit check
1) Disconnect radiator cooling fan relay No.2 and connect
radiator cooling fan motor No.1 connector with ignition
switch turned OFF.
2) Run engine until ECT is over 97.5 °C, 207.5 °F.
3) Measure voltage between "BLU/YEL" wire terminal of
radiator cooling fan relay No.2 connector and vehicle
body ground.
Is voltage 10 – 14 V?
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Action
Ω
?
www.CarGarage.ir
Yes
Go to corresponding
DTC flow.
Radiator cooling fan low
speed control system is
in good condition.
Go to Step 4.
Go to Step 5.
Go to Step 15.
Go to Step 10.
No
Go to Step 2.
Perform from Step 2 to
Step 7 in DTC P0480
diag. flow. If OK, Go to
Step 3.
"BLU/WHT" wire is open
circuit.
Go to Step 6.
"BLU/RED" wire is open
or high resistance.
Go to Step 7.
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