REMOVAL CAUTION / NOTICE / HINT HINT: If the thermostat was not installed, cooling efficiency would decrease. Even if the engine tends to overheat, do not remove the thermostat. PROCEDURE 1. REMOVE NO. 1 ENGINE UNDER COVER 2. DRAIN ENGINE COOLANT
3. REMOVE V-BANK COVER SUB-ASSEMBLY 4. REMOVE AIR CLEANER ASSEMBLY 5. REMOVE AIR TUBE SUB-ASSEMBLY LH
(b) Disconnect the water by-pass hose.
(d) Remove the bolt and disconnect the air tube LH from the water inlet housing.
(f) Remove the 2 bolts and disconnect the air hose from the air switching valve LH. (g) Remove the air tube LH. 6. DISCONNECT OUTLET RADIATOR HOSE
7. REMOVE WATER INLET SUB-ASSEMBLY WITH THERMOSTAT
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Toyota Tundra Service Manual > Engine Coolant Temperature Sensor: Inspection
INSPECTION PROCEDURE 1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR (a) Partially immerse the sensor in water and warm up the water. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Condition Specified Condition 1 - 2 Approx. 20°C (68°F) ...