Last Modified: 11-29-2007 1.6 G Service Category: Engine/Hybrid System Section: Intake/Exhaust Model Year: 2008 Model: Sequoia Doc ID: RM0000031GR004X Title: 3UR-FE INTAKE / EXHAUST: VACUUM SWITCHING VALVE: ON-VEHICLE INSPECTION (2008 Sequoia) ON-VEHICLE INSPECTION 1. REMOVE V-BANK COVER SUB-ASSEMBLY 2. INSPECT VACUUM SWITCHING VALVE ASSEMBLY (for ACIS) (a) Disconnect the vacuum switching valve connector. (b) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Condition Condition Specified Condition 1 - 2 20°C (68°F) 37 to 44 Ω 1 - Body ground Always 1 MΩ or higher 2 - Body ground If the result is not as specified, replace the vacuum switching valve assembly.

(c) Check the vacuum switching valve operation.

(1) When applying a vacuum to port E, check that air is sucked into the filter. If the result is not as specified, replace the vacuum switching valve assembly.

(2) Apply voltage across the terminals.

(3) When applying a vacuum to port F, check that air is sucked into port E.

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

(d) Connect the vacuum switching valve connector.

3. INSTALL V-BANK COVER SUB-ASSEMBLY