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Without Scan Tool

  1. Remove intake manifold cover located on top of engine. Start and warm engine up to normal operating temperature. Shut engine off. Connect tachometer to DLC3. See Fig 1.
  2. Connect timing light to lead wire at ignition coil electrical connector on top of driver's side valve cover at cylinder No. 1. See Figure. Cylinder No. 1 is front cylinder on left side of engine when viewed from flywheel end of engine. See Figure.
  3. Apply parking brake. Place transmission in Neutral. Start engine and maintain engine at 2500 RPM for 90 seconds and allow engine to idle. Ensure idle speed is 700-800 RPM. Install Jumper Wire (SST 09843-18040) between terminals TC and CG on DLC3. See Fig 2.
  4. Use timing light to check timing marks located on timing belt cover, near crankshaft pulley. Ensure base timing is 8-12 degrees BTDC at idle with transmission in Neutral, and with A/C and all accessories off. Shut engine off. Remove timing light and scan tool. Reinstall intake manifold cover.
Fig 1: Connecting Tachometer To DLC3 (LS430 & SC430)
G00024226Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Shorting DLC3 Connector Terminals To Check Timing (LS430 & SC430)
G00024227Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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