Toyota Tundra. Manual — part 1711

INSPECTION

1

INSPECT AIR SWITCHING VALVE ASSEMBLY

a

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

Standard resistance

AIR SWITCHING VALVE ASSEMBLY STANDARD RESISTANCE

Fig. 43: Inspecting Air Switching Valve Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the result is not as specified, replace the air switching valve

b

Check operation of the air switching valve

1

Check that air does not flow from port A to port B

Tester Connection Condition Specified Condition

1 - 5

20°C (68°F)

4 5 to 5 5 ohms

1 - Body ground

Always

10 kohms or higher

5 - Body ground

NOTE:

When measuring the resistance, do not touch terminals 2, 3, and 4.

NOTE:

Make sure the applied pressure is 30 kPa (0.3 kgf/cm

2

, 4.4 psi)

or less.

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra

If the result is not as specified, replace the air switching valve

Fig. 44: Checking Air Does Not Flow From Port A To Port B
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Apply battery voltage across terminals 1 and 5

3

Check that air flows from port A to port B If the result is not as specified, replace the air
switching valve

NOTE:

When applying voltage, do not touch terminals 2, 3, and 4.

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra

Fig. 45: Checking Air Flows From Port A To Port B
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSTALLATION

1

INSTALL AIR SWITCHING VALVE ASSEMBLY

a

Install the air switching valve with the bolt and 2 nuts

Torque: 19 N*m (194 kgf*cm, 14 ft.*lbf)

Fig. 46: Identifying Air Switching Valve Bolt And Nuts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

CONNECT NO. 2 AIR TUBE

a

Connect the No 2 air tube

1

Temporarily install a new gasket and the No 2 air tube to the air switching valve side with
the 2 nuts Then temporarily install a new gasket and the No 2 air tube to the exhaust
manifold side with the 2 nuts

2

Temporarily install the No 2 air tube bracket to the rear water bypass joint with the bolt

3

Tighten the bolt and 4 nuts

Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)

4

Connect the wire harness clamp

3

INSTALL NO. 1 AIR TUBE

a

Install the No 1 air tube

1

Temporarily install a new gasket and the No 1 air tube to the exhaust manifold side with the
2 nuts

2

Install a new gasket and the No 1 air tube to the air switching valve side with the 2 bolts

Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)

3

Tighten the 2 nuts on the exhaust manifold side

Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra

Fig. 47: Identifying No. 1 Air Tube Nuts And Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

4

INSTALL AIR TUBE

a

Install the air tube with the bolt

Torque: 8.0 N*m (82 kgf*cm, 71 in.*lbf)

Fig. 48: Identifying Air Tube Bolt
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

5

INSTALL NO. 4 AIR INJECTION SYSTEM HOSE

a

Install the air injection system hose and the 2 clamps as shown in the illustration

6

INSTALL NO. 5 AIR INJECTION SYSTEM HOSE

a

Install the air injection system hose and the 2 clamps as shown in the illustration

2009 Toyota Tundra

2009 ENG NE Emission Control (1GR-FE) - Tundra