2004 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE

Ignition Timing: Inspection

  1. REMOVE BATTERY CLAMP COVER 
  2. REMOVE INTAKE AIR CONNECTOR 
  3. REMOVE V-BANK COVER 
  4. WARM UP ENGINE 

    Allow the engine to warm up to the normal operating temperature.

    Fig 1: Connecting TOYOTA Hand-Held Tester To DLC3
    G02903414Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. CONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL 
    1. Connect the TOYOTA hand-held tester or OBD II scan tool to the DLC3.
    2. Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.
    Fig 2: Checking Idle Speed
    G02903415Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. CONNECT TIMING LIGHT TO ENGINE 

    Connect the tester probe of a timing light to the wire of the ignition coil connector for No. 1 cylinder.

  7. CHECK IDLE SPEED 
    1. Race the engine speed at 2,500 RPM for approx. 90 seconds.
    2. Check the idle speed.
      1. Idle speed: 
      2. 700 +/- 50 RPM 
  8. INSPECT IGNITION TIMING 
    1. Using SST, connect terminal TC and E1 of the DLC1.
      1. SST 09843-18020
      Fig 3: Connecting DLC1 Connector Terminals TC & E1 Using SST
      G02903416Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Using a timing light, check the ignition timing.
      1. Ignition timing: 
      2. 5 - 15° BTDC@idle 
      3. (Transmission in neutral position) 
      Fig 4: Checking Ignition Timing
      G02903417Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Remove SST from the DLC1.
      1. SST 09843-18020
  9. DISCONNECT TIMING LIGHT FROM ENGINE 
  10. DISCONNECT TOYOTA HAND-HELD TESTER OR OBD II SCAN TOOL 
  11. REINSTALL V-BANK COVER 
  12. REINSTALL INTAKE AIR CONNECTOR 
  13. REINSTALL BATTERY CLAMP COVER 
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.

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