Toyota Corolla (E120): Diagnostic trouble code chart

The inspection procedures are shown in the table below. This table allows efficient and accurate troubleshooting using the diagnostic trouble codes displayed in the diagnostic trouble code chart. Proceed with troubleshooting in accordance with the inspection procedures listed in the diagnostic chart corresponding to the diagnostic trouble codes displayed. The diagnostic trouble code chart for the supplemental restraint system is shown below as an example.

Problem symptoms table

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    Inspection procedure
    1 Check un–lock warning switch assy Disconnect the key unlock warning switch connector.  check the continuity between the terminals of the key unlock warning switch connector, as shown in the illustration and table. Standard: 2 Check wire harness (tvip ecu unlock warni ...

    Shifting the shift lever
    Vehicles without a smart key system: While the engine switch is in the “ON” position, depress the brake pedal and move the shift lever. Vehicles with a smart key system: While the engine switch is in IGNITION ON mode, depress the brake pedal and move the shift lever. When shifting the ...

    Seat belt warning lamp for front passenger’s seat does not flash
    Wiring diagram Inspection procedure 1 Inspect combination meter assy Ground terminal c9–11 on the combination meter side.  check that the warning lightlights up. Ok: warning light lights up. 2 Inspect passenger seat belt warning lamp assy Ground terminal c9– ...