Toyota Tundra. Manual — part 1461

a. Disconnect the connector.

b. Remove the bolt and camshaft timing oil control valve.

c. Remove the O-ring from the camshaft timing oil control valve.

Fig. 321: Locating Connector

INSPECTION

1. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

a. 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 oil control valve assembly.

Fig. 322: Inspecting Camshaft Timing Oil Control Valve Assembly

b. Connect the battery's positive (+) lead to terminal 1 and the negative (-) lead to terminal 2, and

check the movement of the valve.

OK

Tester Connection Condition Specified Condition

1 - 2

20°C (68°F)

6.9 to 7.9 ohms

2008 Toyota Tundra

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

BATTERY VOLTAGE SPECIFICATION

Fig. 323: Sectional View Of Oil Control Valve Assembly

If the result is not as specified, replace the camshaft timing oil control valve. If the valve cannot
return properly because of foreign matter, a small pressure leak in the advanced direction may
occur and a DTC may be output.

INSTALLATION

1. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (for Bank 1)

a. Install a new O-ring to the camshaft timing oil control valve.

b. Apply a light coat of engine oil to the O-ring.

c. Install the camshaft timing oil control valve with the bolt.

Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)

d. Connect the camshaft timing oil control valve connector.

Fig. 324: Locating Camshaft Timing Oil Control Valve Connector

Condition

Specified Condition

Battery positive (+) voltage is
applied

Valve moves in left arrow direction shown in the illustration

Battery positive (+) voltage is cut off

Valve moves in right arrow direction shown In the
illustration

2008 Toyota Tundra

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

2. INSTALL CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (for Bank 2)

a. Install a new O-ring to the camshaft timing oil control valve.

b. Apply a light coat of engine oil to the O-ring.

c. Install the oil control valve with the bolt.

Torque: 7.5 N*m (76 kgf*cm, 66 in.*lbf)

d. Connect the camshaft timing oil control valve connector.

Fig. 325: Locating Camshaft Timing Oil Control Valve Connector

3. INSTALL AIR CLEANER HOSE ASSEMBLY (See INSTALLATION )

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

5. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

THROTTLE BODY

COMPONENTS

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

Fig. 326: Identifying Throttle Body Replacement Components With Torque Specifications

ON-VEHICLE INSPECTION

1. CHECK THROTTLE BODY

a. Check the throttle control motor operating sounds.

1. Turn the ignition switch ON.

2. When depressing the accelerator pedal, check the operating sound of the running motor.

Make sure that no friction noises emit from the motor. If friction noise exists, replace the
throttle body.

2008 Toyota Tundra

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