Toyota Corolla (E120): Circuit description

Dtc output mode is set by connecting between tc and cg of the dlc3.

The dtcs are displayed by blinking the srs warning light.

Wiring diagram

Hint:

Hint

: when each warning light stays blinking, ground short in the wiring until the terminal tc of the dlc3 or internal ground short in each ecu is suspected.

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    Disposal
    Hint: when scrapping vehicle equipped with an srs or disposing of a horn button assy, always first deploy the airbag in accordance with the procedure described below. If any abnormality occurs in the airbag deployment, contact the service dept. Of toyota motor sales, u.S.A., Inc. Caution: ...

    Inspection procedure
    1 Check side air bag sensor assy lh Sst 09843–18040 Connect the negative (–) terminal cable to the battery, and wait at least for 2 seconds.  turn the ignition switch to on, and wait at least for 20 seconds.  clear the dtc stored in memory .  turn the ignition swi ...

    Problem symptoms table
    If a normal code is displayed during the dtc check but the problem still occurs, check the circuits for each problem symptom in the order given in the table below and proceed to the relevant troubleshooting page. Notice: when replacing skid control ecu, sensor or etc., Turn the ignition swi ...