Toyota Tundra. Manual — part 1762

b

Remove the 4 nuts, front water bypass joint and 2 gaskets

Fig. 49: Identifying Front Water By-Pass Joint And Nuts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

10

REMOVE AIR TUBE

a

Disconnect the No 2 and No 3 hoses

b

Disconnect the air pump's connector

c

Disconnect the air pump connector clamp's holder

Fig. 50: Identifying Connector, Air Pump Hoses Connectors And Clamps
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Using a clip remover, detach the wire harness claw

e

Remove the 2 bolts and air tube

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FE) - Tundra

Fig. 51: Identifying Air Tube Clamp Fasteners
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

f

Disconnect the 2 No 1 air hoses from the air tube

11

REMOVE AIR SWITCHING VALVE ASSEMBLY

a

Disconnect the knock sensor's connector

b

Remove the bolt and bracket

c

Disconnect the 2 air switching valve connectors

Fig. 52: Identifying Air Switching Valve Connectors
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

d

Remove the 3 bolts and air switching valve

Fig. 53: Identifying Air Switching Valve And Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

12

REMOVE NO. 2 AIR TUBE

a

Remove the 2 bolts, No 2 air tube and gasket

NOTE:

Be careful not to damage the installation surface of the gaskets.

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FE) - Tundra

Fig. 54: Identifying No. 2 Air Tube Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

13

REMOVE NO. 3 AIR TUBE

a

Remove the 2 bolts, No 3 air tube and gasket

Fig. 55: Identifying No. 3 Air Tube Bolts
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

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 SPECIFICATION

NOTE:

Be careful not to damage the installation surface of the gaskets.

Tester Connection Condition Specified Condition

1 - 5

20°C (68°F)

4 5 to 5 5 ohms

1 - Body ground

Always

1 Mohms or higher

5 - Body ground

2009 Toyota Tundra

2009 ENG NE Emission Control (3UR-FE) - Tundra

Fig. 56: 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 assembly

b

Check the operation of the air switching valve

1

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

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

NOTE:

When applying voltage, 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 (3UR-FE) - Tundra