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Home >> Toyota >> 2008 >> Highlander Base, AWD >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (2GR-FE Except Hybrid) - System Testing, On-Vehicle Inspection, Removal, Inspection And Installation >> VACUUM SWITCHING VALVE (Engine Mounting) >> Inspection

VACUUM SWITCHING VALVE (Engine Mounting): Inspection

  1. INSPECT DUTY VACUUM SWITCHING VALVE (OPERATION) 
    1. Check the operation of the duty vacuum switching valve when positive battery voltage is applied to its terminals.

      Positive battery voltage is not applied: The air from pipe G is flowing out through pipes E and H. 

      Positive battery voltage is applied: The air from pipe F is flowing out through pipes E and H. 

      Fig 1: Inspecting Duty Vacuum Switching Valve Operation
      G04973755Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. INSPECT DUTY VACUUM SWITCHING VALVE (RESISTANCE) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTION SPECIFIED CONDITION TABLE

      Tester Connection Condition Specified Condition
      1 - 2 20°C (68°F) 19 to 21 Ω

      If the resistance is not as specified, replace the duty vacuum switching valve.

      Fig 2: Identifying Duty Vacuum Switching Valve Connector
      G05414003Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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