Toyota Corolla (E120): Diagnostic trouble code chart

If a dtc is displayed during the dtc check, check the circuit listed in the table below and proceed to the page given.

* :● ... Mil light up

Problem symptoms table

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    Using the steering wheel switches
    The steering wheel switches can be used to operate a connected cellular phone. Operating a telephone using the steering wheel switches ■ Steering wheel switches on the right hand side 1 Off hook switch • Make a call • Receive a call • Display “Phone” screen 2 On hook switch ...

    Sound quality is bad only when cd is played(volume is too low)
    Inspection procedure 1 Replace cd with another and recheck Replace the cd with another and recheck.  Check the installation condition of the radio receiver assembly. Standard: malfunction disappear. Check and replace radio receiver assy ...

    Inspection procedure
    Hint: hand–held tester only: narrowing down the trouble area is possible by performing ”a/f control” active test (heated oxygen sensor or other trouble areas can be distinguished). Perform active test using hand–held tester (a/f control). Hint: ”a/f control” is the active te ...