Diagnosis & Repair

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

NOTE: Using hand-held tester or scan tool, read FREEZE FRAME data. Freeze frame data records engine conditions when malfunction is detected.

For diagnosis and repair procedure, see Fig 1 & Fig 2 .

For locating emission related components, see Figure.

For ECM location, see Figure. For ECM connector view, see Figure. For circuit wiring diagram, see Fig 3. For testing of systems or components, see SYSTEM & COMPONENT TESTING - V6 & V8 article. For removal and installation of components, see REMOVAL & INSTALLATION - V6 & V8 article.

Fig 1: DTCs P0100, P0102 & P0103 Diagnostic Procedure (Steps 1-3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTCs P0100, P0102 & P0103 Diagnostic Procedure (Steps 4-6)

Fig 3: MAF Meter Circuit Wiring Diagram