
Cooling - Cooling fan system
Cooling fan system
On-vehicle inspection
1. Check cooling fan function at low temperature (below 95
).
(a) Turn ignition switch to ON.
(b) Check cooling fan is stopped.
Hint: if it is not stopped, check cooling fan relay and water temperature sensor, or check the
joint or wire harness between them.
(c) Uncouple water temperature sensor joint.
(d) Check cooling fan runs.
If it does not run, check fuse, cooling fan relay, engine ECU and cooling fan, or check there is short
circuit between them.
(e) Connect back water temperature sensor joint.
2. Check cooling fan function at high temperature (above 95
).
(a) Start engine and increase coolant temperature up to above
Hint: water temperature is the value measured by water temperature sensor on water outlet.
(d) Check cooling fan runs.
Hint: if it does not run, please replace water temperature sensor.
3. Check cooling fan.
(a) Uncouple cooling fan joint.
(b) Connect battery and ampere meter to cooling fan joint.
(c) Check cooling fan runs normally and check ampere meter reading.Standard current: 7 12A
(d) Connect back cooling fan joint.
Inspection
1. Electronic fan relay [67000064]
2. Electronic fan relay II [67000072]
3. Cooling fan speed adjusting resistance assembly
[67000001]
Measure resistance between terminals with ohmmeter.
Resistance: at normal temperature: 1.3
68
Specified
conditions
Normal state
Conduction
Conduction
Terminal connected
by three-use meter
Conditions
Supply battery voltage
to No. 1 and No. 2
terminals
Specified
conditions
Normal state
Conduction
Conduction
Terminal connected
by three-use meter
Conditions
Supply battery voltage
to No. 1 and No. 2
terminals
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