Diagnosis & Repair

WARNING: This page is about a different car, the 2003 Toyota Matrix and 2003 Toyota Corolla. However, it is still accessible from the selected car via links, so may be relevant.

For diagnosis and repair, see Fig 1-Fig 4 . For ECM location, see Figure. To check ECM inputs and outputs, see PIN VOLTAGE CHARTS article. For removal and installation of components, see REMOVAL & INSTALLATION - 4-CYLINDER article. To identify circuits referenced in testing, See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. To check ECM power source circuit, see SYSTEM & COMPONENT TESTING - 4-CYLINDER article.

Fig 1: DTC P0100 Diagnostic Procedure (Steps 1-2)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTC P0100 Diagnostic Procedure (Steps 3-4)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: DTC P0100 Diagnostic Procedure (Step 5)

Fig 4: DTC P0100 Diagnostic Procedure (Steps 6-7)