Toyota 3S-GE Repair Manual page 376

EG-362
ENGINE — COOLING SYSTEM
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Water Temperature Switch
WATER TEMPERATURE SWITCH
INSPECTION
1. DRAIN ENGINE COOLANT
2. REMOVE WATER TEMPERATURE SWITCH
3. INSPECT WATER TEMPERATURE SWITCH
(a) Using an ohmmeter, check that there is no continuity
between the terminals when the coolant temperature
is above 93°C (199° F).
(b) Using an ohmmeter, check that there is continuity
between the terminals when the coolant temperature
is below 83°C (I81°F).
If continuity is not as specified, replace the switch.
4. REINSTALL WATER TEMPERATURE SWITCH
5. REFILL WITH ENGINE COOLANT
6. START ENGINE AND CHECK FOR COOLANT
LEAKS
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Fan Main Relay ("FAN MAIN')
FAN MAIN RELAY INSPECTION
(See page EG -353)
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No.1 Cooling Fan Relay ('FAN NO.1")
NO.1 COOLING FAN RELAY INSPECTION
(See page EG—354)