Last Modified: 11-29-2007 1.6 G
Service Category: Engine/Hybrid System Section: Emission Control
Model Year: 2008 Model: Sequoia Doc ID: RM0000030WF005X
Title: 3UR-FE EMISSION CONTROL: AIR SWITCHING VALVE: INSPECTION (2008 Sequoia)

INSPECTION

1. INSPECT ELECTRIC AIR CONTROL VALVE ASSEMBLY

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

Standard Resistance:

Tester Connection

Condition

Specified Condition

1 - 5

20°C (68°F)

4.5 to 5.5 Ω

1 - Body ground

Always

1 MΩ or higher

5 - Body ground

NOTICE:

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

If the result is not as specified, replace the electric air control valve assembly.

(b) Check the operation of the electric air control valve assembly.

(1) Check that air does not flow from port A to port B.

NOTICE:

Make sure that the applied pressure is 30 kPa (0.3 kgf/cm2, 4.4 psi) or less

If the result is not as specified, replace the electric air control valve assembly.

(2) Apply battery voltage to the connector, and check the air switching valve operation.

NOTICE:

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

OK:

Measurement Condition

Specified Condition

Battery positive (+) → Terminal 1

Battery negative (-) → Terminal 5

Air flows from port A to port B

If the result is not as specified, replace the electric air control valve assembly.