Toyota Supra JZA80

Ignition timing

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

  2. Connect Toyota hand-held tester or OBDII scan tool

    1. Connect the TOYOTA hand-held tester or OBDII scan tool to the DLC3.
    2. Please refer to the TOYOTA hand-held tester or OBDII scan tool operator’s manual for further details.
  3. Connect timing light to engine
  4. Check idle speed
    1. Race the engine speed at 2,500 rpm for approx. 90 seconds.
    2. Check the idle speed.
      Idle speed: 650 ± 50 rpm
  5. Inspect ignition timing
    1. Using SST, connect terminals TE1 and E1 of the DLC1.
      SST 09843-18020
    2. Open the igniter connector cover and remove the green lead wire.
    3. Connect the timing light clip to the green lead wire.
      • Use a timing light that can detect the primary signal.
      • After finishing the inspection, make sure the lead wire is stored inside the connector cover.
    4. Using a timing light, check the ignition timing.
      Ignition timing: 10 ± 2° BTDC @ idle
      (Transmission in neutral position)
    5. Remove the SST from the DLC1.
      SST 09843–18020
  6. Further check ignition timing
    Ignition timing: 10 - 20° BTDC @ idle
    (Transmission in neutral position)
    The timing mark moves in a range between 10° and 20°.
  7. Disconnect timing light from engine
  8. Disconnect Toyota hand-held tester or OBDII scan tool
This guide is based on the book edition Toyota (RM502U, 1997)
Volksbibliothek, info@volksbibliothek.com

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