Toyota Tundra. Manual — part 1288

Fig. 345: Identifying Engine Coolant Temperature Sensor Replacement Components & Torque
Specifications (4 Of 4)

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

2. REMOVE INTAKE AIR SURGE TANK

a. Remove the intake air surge tank. (See REMOVAL ).

3. DISCONNECT NO. 1 FUEL PIPE SUB-ASSEMBLY . (See REMOVAL ).

4. DISCONNECT NO. 2 FUEL PIPE SUB-ASSEMBLY . (See REMOVAL ).

5. REMOVE INTAKE MANIFOLD

a. Disconnect the 6 fuel injector connectors.

b. Remove the 10 bolts, intake manifold and 2 gaskets.

Fig. 346: Locating Bolts

6. REMOVE ENGINE COOLANT TEMPERATURE SENSOR

a. Disconnect the sensor connector.

b. Remove the sensor.

c. Remove the gasket from the sensor.

Fig. 347: Identifying Engine Coolant Temperature Sensor Connector

NOTE:



Some systems need to be initialized after the cable is reconnected
(see INITIALIZATION ).



After the ignition switch is turned OFF, the navigation system
requires approximately 90 seconds to record various types of
memory and settings. As a result, after turning the ignition switch
OFF, wait 90 seconds or more before disconnecting the cable from
the negative (-) battery terminal.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

INSPECTION

1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

Fig. 348: Inspecting Engine Coolant Temperature Sensor

a. Partially soak 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 SPECIFIED CONDITION

If the result is not as specified, replace the sensor.

INSTALLATION

1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR

a. Install a new gasket to the sensor.

b. Install the sensor.

Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)

c. Connect the sensor connector.

Tester Connection

Condition

Specified Condition

1 - 2

Approx. 20°C (68°F)

2.32 to 2.59 kohms

Approx. 80°C (176°F) 0.310 to 0.326 kohms

NOTE:

When checking the sensor in water, keep the terminals dry. After the
check, wipe the sensor dry.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra

Fig. 349: Identifying Engine Coolant Temperature Sensor Connector

2. INSTALL INTAKE MANIFOLD

a. Set a new gasket on each cylinder head.

b. Set the intake manifold on the cylinder heads.

Fig. 350: Installing Gasket On Cylinder Head

c. Install and uniformly tighten the 10 bolts in several passes.

Torque: 26 N*m (265 kgf*cm, 19 ft.*lbf)

d. Connect the 6 fuel injector connectors.

3. INSTALL INTAKE AIR SURGE TANK

a. Install the intake air surge tank. (See INSTALLATION ).

4. CONNECT NO. 2 FUEL PIPE SUB-ASSEMBLY . (See INSTALLATION ).

5. CONNECT NO. 1 FUEL PIPE SUB-ASSEMBLY . (See INSTALLATION ).

NOTE:



Align the port holes of the gasket and cylinder head.



Be careful of the installation direction.

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (1GR-FE) - Tundra