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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 102 (ENGINE CONTROLS - THEORY & OPERATION)IGNITION SYSTEMDISTRIBUTORLESS IGNITION SYSTEMGS430, LS430, LX470 & SC430
2004 Toyota Matrix XR, FWD, Standard

GS430, LS430, Lx470 & SC430

2004 Toyota Matrix XR, FWD, StandardSECTION GS430, LS430, Lx470 & SC430
WARNING: This page does not describe the selected car, but rather 9 other vehicles, including the 2003 Lexus SC 430, 2003 Lexus RX 300, 2003 Lexus LX 470, 2003 Lexus LS 430, and 2003 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.

Distributorless Ignition System (DIS) uses Engine Control Module (ECM) for determining ignition timing (spark advance). ECM may determine ignition timing (spark advance) based on various input signals, engine RPM and knock sensor input signals.

Camshaft position sensor and crankshaft position sensor deliver input signals to ECM. ECM detects standard crankshaft position based on camshaft position sensor input signals, and actual crankshaft position and engine speed by crankshaft position sensor input signals. Camshaft position sensor is mounted to front of left upper (No. 3) timing belt cover. Crankshaft position sensor is located at front of crankshaft, near crankshaft pulley. For knock sensor location, see REMOVAL & INSTALLATION - EXCEPT GX470 article.

The ECM uses 8 ignition primary control signals to ignitors for ignition coils. DIS uses 8 ignition coils with internal ignitors, one ignition coil for each cylinder. Cylinder No. 1 is front cylinder on left side of engine when viewed from flywheel end of engine. Cylinder No. 2 is front cylinder on right side of engine when viewed from flywheel end of engine. Cylinders No. 1, 3, 5 and 7 are on left side of engine. Cylinders No. 2, 4, 6 and 8 are on right side of engine.

ECM monitors IGF circuit at ignitor to ensure ignition coils have fired. ECM stops fuel injection as a fail-safe function if ECM does not receive IGF signal.

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
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