Diagnosis & Repair

NOTE:

If DTC P1349 is displayed, check VVT system circuit.
Read freeze frame data using hand-held tester or OBD II scan tool, as freeze frame data records engine conditions when malfunction is detected. When trouble shooting, it is useful for determining whether vehicle was running or stopped, engine was warmed up or not, air-fuel ratio was lean or rich, etc. at time of malfunction.

For wiring diagram, see Fig 1. For diagnosis and repair with hand-held tester, see Fig 2 and Fig 3 . For diagnosis and repair with OBD II scan tool, see Fig 4 and Fig 3 . For adjustments, see ON-VEHICLE ADJUSTMENTS - 4-CYLINDER article. To check ECM inputs and outputs, see PIN VOLTAGE CHARTS article. For removal and installation of components, see REMOVAL & INSTALLATION - 4-CYLINDER article. For testing of components, see SYSTEM & COMPONENT TESTING - 4-CYLINDER article.

Fig 1: DTC P1349 Wiring Diagram

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 2: DTC P1349 Diagnostic Procedure (Using Hand-Held Tester, Steps 1-3)

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Fig 3: DTC P1349 Diagnostic Procedure (Using Hand-Held Tester Or OBD II Scan Tool, Steps 4-7)

Fig 4: DTC P1349 Diagnostic Procedure (Using OBD II Scan Tool, Steps 1-3)