Toyota Tundra. Manual — part 1741

Fig. 22: Locating Air Pump Insulators
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

INSPECTION

1

INSPECT AIR PUMP ASSEMBLY

a

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

Standard Resistance

RESISTANCE REFERENCE

Tester Connection Condition Specified Condition

1 - 2

20°C (68°F)

0 4 to 1 0 ohms

1 - Body ground

Always

10 kohms or higher

2 - Body ground

2009 Toyota Tundra

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

Fig. 23: Inspecting Air Pump Assembly
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the result is not as specified, replace the air pump assembly

b

Check the operation of the air pump

1

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

Fig. 24: Checking Operation Of Air Pump
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

2

Apply battery voltage to the connector, and check the air pump operation

OK

2009 Toyota Tundra

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

VOLTAGE SPECIFICATION

Fig. 25: Checking Air Pump Operation
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

If the result is not as specified, replace the air pump assembly

INSTALLATION

1

INSTALL AIR PUMP ASSEMBLY

a

Connect the 6 air pump insulators to the air pump and install the air pump to the bracket

Fig. 26: Locating Air Pump Insulators
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

b

Attach the 2 wire harness clamps to the bracket

Measurement Condition

Specified Condition

Battery positive (+) --> Terminal 2
Battery negative (-) --> Terminal 1

Air flows from port A to port B

NOTE:



Do not operate the air pump continuously for 2 minutes or
more.



When operating the air pump, wait 5 minutes until the
pump has cooled down between each operation. If the
pump has not cooled down sufficiently, the motor will burn
out.

2009 Toyota Tundra

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

2

CONNECT NO. 1 AIR INJECTION SYSTEM HOSE

a

Connect the 2 hoses to the air pump

HINT:

Insert the hoses until the hose ends are aligned with the stoppers

Fig. 27: Identifying No. 1 Air Injection System Hose
Courtesy of TOYOTA MOTOR SALES, U.S.A., INC.

3

INSTALL AIR PUMP INLET

a

Connect the air pump inlet to the 2 No 1 air injection system hoses

HINT:

Insert the inlet until the inlet stoppers are aligned with the hose ends

2009 Toyota Tundra

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