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Ignition Timing: Turbo

  1. Start engine and warm engine to normal operating temperature. Shut engine off. Connect scan tool to data link connector No. 3. See Figure. Scan tool is used to read engine RPM.
  2. Open cover located above the ignitor. Ignitor is located near driver's side strut tower. Connect timing light lead to battery and Green wire near the ignitor. See Fig 1.
  3. Apply parking brake. Place transmission in Neutral. Start engine and maintain engine at 2500 RPM for 90 seconds and then allow engine to idle. Ensure idle speed is 600-700 RPM.
  4. Install Jumper Wire (SST 09843-18020) between terminals TE1 and E1 on data link connector No. 1. See Fig 2. Data link connector No. 1 is located at passenger's side rear corner of engine compartment, on the firewall.
    NOTE: Timing marks are located on front cover.
  5. Ensure base timing is within specification at idle with transmission in Neutral with A/C and all accessories off. See 6-CYLINDER IGNITION TIMING  table.
  6. Remove jumper wire from data link connector No. 1. Ensure ECM controlled timing is within specification. See 6-CYLINDER IGNITION TIMING  table. Shut engine off. Remove jumper wire, scan tool and timing light.
Fig 1: Connecting Timing Light (Turbo)
G95D30901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Installing Jumper Wire Between Data Link Connector No. 1 Terminals (Turbo)
G95C30900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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