On-Vehicle Inspection

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INSPECT NO. 1 VACUUM SWITCHING VALVE ASSEMBLY (for Intake Air Control System)

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

Fig 1: Inspecting No. 1 Vacuum Switching Valve Assembly

GTY189883

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Standard Resistance

Tester Connection	Condition	Specified Condition
1 - 2	20°C (68°F)	37 to 44 Ω
1 - Body ground	Always	1 MΩ or higher
2 - Body ground	Always	1 MΩ or higher

If the result is not as specified, replace the No. 3 intake air control valve assembly.

Check the vacuum switching valve (for Intake Air Control System) operation.
1. When vacuum is applied to port E, check that air is sucked into the filter.
  
  Fig 2: Checking Vacuum Switching Valve Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the No. 3 intake air control valve assembly.
2. Apply battery voltage across the terminals. When vacuum is applied to port F, check that air is sucked into port E.
  
  Fig 3: Applying Battery Voltage Across Terminals
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  If the result is not as specified, replace the No. 3 intake air control valve assembly.