Toyota Corolla (E120): Diagnostic trouble code chart

Notice

: when removing the part, turn the ignition switch to off.

Hint

: using sst 09843–18040, it connect the terminal tc and cg of dlc3.

If any abnormality is not found when inspecting parts, inspect the ecu and ground points for poor contact.

If a malfunction code is displayed during the dtc check, check the circuit listed that code. For details of each code, turn to the page referred to under the ”” for respective ”dtc no.” In the dtc chart.

When 2 or more dtc’s are recorded, and the problem is not identified, perform circuit inspection of the other dtc’s.

Dtc of speed sensor check function:

Dtc of speed sensor check function:

Location

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    Circuit description
    The ecm compares the two waveforms of the heated oxygen sensors located before and after the catalyst to determine whether or not the catalyst performance has deteriorated. Air–fuel ratio feedback compensation keeps the waveform of the heated oxygen sensor in front of the catalyst alterna ...

    Inspection procedure
    1 Check door lock When the door does not operate manually, proceed to ”a”.  when the door does not operate via the key, proceed to ”b”. 2 Inspect door lock control switch W/ power window: remove the power window regulator master switch assy.  Inspect th ...

    What to do if... (Troubleshooting)
    If there is a problem with the hands-free system or a Bluetooth® device, first check the table below. ► When using the hands-free system with a Bluetooth® device ► When registering/connecting a cellular phone ► When making/receiving a call ► When using the p ...