Toyota Corolla (E120): Circuit description

The srs warning light is located on the combination meter.

When the srs is normal, the srs warning light lights up for approx. 6 Seconds after the ignition switch is turned from the lock position to on position, and then turns off automatically.

If there is a malfunction in the srs, the srs warning light lights up to inform the driver of the abnormality.

When terminals tc and cg of the dlc3 are connected, the dtc is displayed by blinking the srs warning light.

Wiring diagram

Inspection procedure

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    Initialization
    1. Reset memory Caution: perform the reset memory (at initialization) when replacing the automatic transaxle assy, engine assy or ecm. Notice: hand–held tester only Turn the ignition switch off.  connect the hand–held tester to the dlc3.  turn the ignition switch to th ...

    LTA (Lane Tracing Assist)
    LTA functions When driving on a road with clear lane lines with the dynamic radar cruise control operating, lane lines and preceding and surrounding vehicles are detected using the front camera and radar sensor, and the steering wheel is operated to maintain the vehicle's lane position. ...

    Inspection procedure
    1 Check connector Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  check the connection of the combination meter connector and the airbag sensor assy center connectors. Ok: the connectors are connected. 2 Check combination ...