Toyota Tundra. Manual — part 1469

COMPONENTS

Fig. 368: Identifying Engine Coolant Temperature Sensor Replacement Components With Torque
Specifications

REMOVAL

1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL

NOTE:

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

2. DRAIN ENGINE COOLANT . (See REPLACEMENT ).

3. REMOVE THROTTLE BODY COVER SUB-ASSEMBLY . (See REMOVAL).

4. REMOVE AIR CLEANER HOSE ASSEMBLY . (See REMOVAL ).

5. REMOVE ENGINE COOLANT TEMPERATURE SENSOR

a. Disconnect the connector.

b. Remove the sensor and gasket.

INSPECTION

1. INSPECT ENGINE COOLANT TEMPERATURE SENSOR

a. Partially soak the sensor in water and warm up the water.

Fig. 369: Locating Engine Coolant Temperature Sensor Connector

Fig. 370: Inspecting Engine Coolant Temperature Sensor With Graph



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 (2UZ-FE) - Tundra

b. Measure the resistance according to the value(s) in the table below.

Standard resistance

STANDARD RESISTANCE SPECIFICATION

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

INSTALLATION

1. INSTALL ENGINE COOLANT TEMPERATURE SENSOR

a. Install a new gasket and the sensor.

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

b. Connect the connector.

2. INSTALL AIR CLEANER HOSE ASSEMBLY (See INSTALLATION )

3. ADD ENGINE COOLANT . (See REPLACEMENT ).

Fig. 371: Locating Engine Coolant Temperature Sensor Connector

4. INSPECT FOR ENGINE COOLANT LEAK . (See ON-VEHICLE INSPECTION ).

5. INSTALL THROTTLE BODY COVER SUB-ASSEMBLY (See INSTALLATION )

6. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

Tester Connection

Condition

Specified Condition

1 - 2

Approx. 20°C (68°F)

2.32 to 2.59 kohms

1 - 2

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.

NOTE:

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

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra

KNOCK SENSOR

COMPONENTS

Fig. 372: Identifying Knock Sensor Replacement Components With Torque Specifications (1 Of 3)

2008 Toyota Tundra

2008 ENGINE PERFORMANCE Engine Control System (2UZ-FE) - Tundra