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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    Basic inspection
    Resistance measuring condition of electronic parts  unless stated, all resistance is measured at an ambient temperature of 20 c (68 °F). As the resistance may be outside the specifications if measured at high temperatures immediately after the vehicle has been running, measu ...

    Coolant
    Replacement 1. Drain coolant Caution: to avoid the danger of being burned, do not remove the radiator cap while the engine and radiator are still hot, as fluid and steam can be blown out under pressure.  remove the radiator cap.  loosen the radiator and engine drain plugs, a ...

    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 ...