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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 DLC1. 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 Fig 2. Cylinder No. 1 is front cylinder on left side of engine when viewed from flywheel end of engine. See Figure.
  3. Install Jumper Wire (SST 09843-18020) between terminals TC and E1 on DLC1 located near driver's side strut tower. See Fig 3. Apply parking brake. Place transmission in Neutral. Start engine and allow engine to idle.
  4. 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 jumper wire, timing light and tachometer. Reinstall intake manifold cover.
Fig 1: Connecting Tachometer To DLC1 (GS430)
G00024228Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 2: Connecting Timing Light At Ignition Coil (LS430 Is Shown; GS430, GX470 & SC430 Are Similar)
G00024225Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
Fig 3: Installing Jumper Wire Between DLC1 Terminals (GS430)
G00131784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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