Diagnosis & Repair

NOTE: Using Toyota 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 2-Fig 4 .

For IAT sensor circuit wiring diagram, see Fig 1. For location of emission related components, see Figure.

For ECM location, see Figure. For ECM connector terminal view, see Figure.

For testing of systems or components, see SYSTEM & COMPONENT TESTING - 4-CYLINDER article. For removal and installation of components, see REMOVAL & INSTALLATION - 4-CYLINDER article.

Fig 1: IAT Sensor Circuit Wiring Diagram

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Fig 2: DTC P0110 Diagnostic Procedure (Steps 1-2)

Fig 3: DTC P0110 Diagnostic Procedure (Step 3)

Fig 4: DTC P0110 Diagnostic Procedure (Steps 4-5)