Toyota Highlander Service Manual: Inspection
1. INSPECT RELAY (Marking: FAN NO. 1, FAN NO. 3)
(a) Check the resistance of the relay.
Standard:
If the result is not as specified, replace the relay.
2. INSPECT RELAY (Marking: FAN NO. 2)
(a) Check the resistance of the relay.
Standard:
If the result is not as specified, replace the relay.
3. INSPECT ECT SWITCH (NO. 1)
(a) Check the resistance.
Standard:
If the result is not as specified, replace the switch.
NOTICE: When checking the ECT sensor in water, the terminals should be kept dry. After the check, dry the sensor.
4. INSPECT ECT SWITCH (NO. 2)
(a) Check the resistance.
Standard:
If the result is not as specified, replace the switch.
NOTICE: When checking the ECT sensor in water, the terminals should be kept dry. After the check, dry the sensor.
On-vehicle inspection
HINT:
The cooling fan may rotate when the ignition switch is turned from ACC to ON.
This is normal.
1. CHECK COOLING FAN OPERATION AT LOW TEMPERATURE (Below 83 C (181 F))
(a) Turn the ignition sw ...
Coolant (3MZ-FE)
REPLACEMENT
1. DRAIN ENGINE COOLANT
(a) Remove the radiator cap.
CAUTION:
Do not remove the radiator cap while the engine and radiator are still hot.
Pressurized, hot engine
coolant and steam m ...
More about Toyota Highlander:
Inspection
1. INSPECT WATER PUMP ASSY
(a) Visually check for drain hole coolant leakage.
(b) Turn the pulley, and check that the water pump bearing
moves smoothly and noiselessly.
If the bearing moves roughly or noisily, replace the water pump
assy.
(c) Visually check the air holes for coolant le ...
