LS400 1990-1997

Inspection

Print

  1. Remove the battery clamp cover.
  2.  
  3. Remove the air cleaner inlet.
  4.  
  5. Remove the V-Bank cover.
    1. Remove the 2 cap nuts, bolt and V-bank cover.
    2.  

  6.  
  7. Warm up the engine.
    1. Allow the engine to warm up to normal operating temperature.
    2.  

  8.  
  9. Connect Lexus hand-held tester or OBDII scan tool.
    1. Connect the hand-held tester or OBD II scan tool to the DLC3.
    2.  
    3. Please refer to the hand-held tester or OBD II scan tool operator-s manual for further details.
    4.  

  10.  
  11. Connect the timing light to engine.
    1. Connect the tester probe of a timing light to the yellow lead wire of the ignition coil connector for No.1 cylinder.
    2.  

  12.  
  13. Check the idle speed.
    1. Race the engine speed at 2,500 rpm for approx. 90 seconds.
    2.  
    3. Check the idle speed. Idle speed: 750 ± 50 rpm
    4.  

  14.  
  15. Inspect the ignition timing.
    1. Using special service tool (SST SST 09843-18020), connect terminals TC and E1 of the DLC1.
    2.  
    3. Using a timing light, check the ignition timing. Ignition timing: 8 - 12° BTDC @ idle (Transmission in neutral position)
    4.  
    5. Remove the SST 09843-18020 from the DLC1.
    6.  

  16.  
  17. Disconnect the timing light from engine.
  18.  
  19. Disconnect the Lexus hand-held tester or OBD II scan tool.
  20.  
  21. Reinstall V-Bank cover.
  22.  
  23. Reinstall air cleaner inlet.
  24.  
  25. Reinstall the battery clamp cover.
  26.  

 
label.common.footer.alt.autozoneLogo