LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Lexus >> 2008 >> GS 460 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System (1UR-FSE) - Circuit Tests And Repair Information >> VVT Relay >> On-Vehicle Inspection
April 5, 2026: LEMON Manuals is launched! Read the announcement.

On-Vehicle Inspection

  1. REMOVE COOL AIR INTAKE DUCT SEAL  (See REMOVAL )
  2. REMOVE ENGINE ROOM SIDE COVER LH  (See REMOVAL )
  3. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  4. REMOVE VVT RELAY (VVT RH, VVT LH) 
    1. Remove the VVT relay from the engine room No. 2 relay block.
  5. INSPECT VVT RELAY 
    1. Measure the resistance according to the value(s) in the table below.

      Standard resistance 

      TESTER CONNECTIONS SPECIFIED CONDITIONS CHART

      Tester Connection Condition Specified Condition
      3 - 5 when no battery voltage is applied to terminals 1 and 2 10 kΩ or higher
      3 - 5 when battery voltage is applied to terminals 1 and 2 Below 1 Ω

      If the result is not as specified, replace the relay.

      Fig 1: VVT Relay Circuit Diagram
      G04943124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. INSTALL VVT RELAY 
  7. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL 
    NOTE: When disconnecting the cable, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).
  8. INSTALL ENGINE ROOM SIDE COVER LH  (See INSTALLATION )
  9. INSTALL COOL AIR INTAKE DUCT SEAL  (See INSTALLATION )
scientia non olet · About LEMON Manuals