Toyota Corolla (E120): Problem symptoms table

The suspected circuits or parts for each problem symptom are shown in the table below. Use this table to troubleshoot the problem when a normal code is displayed in the diagnostic trouble code chart but the problem is still occurring. Numbers in the table indicate the order in which the circuits or parts should be checked.

Hint: when the problem is not detected by the diagnostic system even though the problem symptom is present, it may be that the problem is occurring outside the detection range of the diagnostic system.

Circuit inspection

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    Transmitter battery
    Replacement 1. Replace transmitter battery Notice: special caution should be taken for handling each component as they are precision electronic components. Using a screwdriver, pry out the transmitter case. Notice: do not forcibly pry out the case. Hint: tape the screwdriver tip ...

    Opening the trunk
    ■ Trunk opener Pull the lever upward to release the trunk lid. ■ Trunk release button (vehicles with a smart key system) While carrying the electronic key, press the button on the trunk lid. When all the doors are unlocked using one of the following methods, the trunk can be opened without the ...

    Body panel undercoating areas
    Apply pastar uwe or pastar uc to the chassis, floor underside, sheet metal fitting weld points of the body, and inside of the wheel house to prevent rust and noise, as well as protect the body from flying rocks. Hint:  work must be performed while wearing the appropriate protective ...