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.
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.
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.
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)

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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.

Safety Warning

Without Scan Tool