Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 11 (ENGINE CONTROLS - ON-VEHICLE ADJUSTMENTS - V6 & V8)IGNITION TIMINGV6HIGHLANDER
2004 Toyota Matrix XR, FWD, Standard
Ignition Timing: V6: Highlander
2004 Toyota Matrix XR, FWD, StandardSECTION Highlander
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- If Toyota hand-held tester is not available, go to next step. If Toyota hand-held tester is available, connect hand-held tester to data link connector No. 3 at driver's side of instrument panel. See Figure. Start engine and warm engine to normal operating temperature. Using hand-held tester manufacturers instructions, read ignition timing with engine idling. Ignition timing should be 8-12° BTDC. Shut engine off. Remove hand-held tester.
- If Toyota hand-held tester is not available, start engine and warm engine to normal operating temperature. Shut engine off. Remove intake manifold cover. See Figure. Pull Black wire from wiring harness near ignition coil and connect timing light lead to Black wire. See Figure.
- Apply parking brake. Place transaxle in Neutral. Note location of data link connector No. 3 at driver's side of instrument panel. See Figure. Install Jumper Wire (SST 09843-18020 or SST 09843-18040) between terminals No. 4 (CG) and 13 (TC) on data link connector No. 3. See Figure. Start engine. Engine speed should increase to 1000-1300 RPM for 5 seconds and return to idle.
- Check ignition timing with engine idling. Timing marks are located on timing belt cover, near crankshaft pulley. Ensure base timing is within specification at idle with transaxle in Neutral, and with A/C, electric cooling fan and all accessories off. See V6 IGNITION TIMING table.
- Remove jumper wire from data link connector No. 3. Ensure ECM controlled timing is within specification. See V6 IGNITION TIMING table. Increase engine speed and check that ignition timing advances when engine speed is increased. Allow engine to idle. Shut engine off. Remove timing light. Reinstall intake manifold cover.
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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.