Toyota Corolla (E120): Circuit description

The d squib circuit consists of the airbag sensor assy center, spiral cable sub–assy and horn button assy.

It causes the srs to deploy when the srs deployment conditions are satisfied.

Dtc b1180/17 is recorded when a short is detected in the d squib circuit (2nd step).

Wiring diagram

Wiring diagram

Inspection procedure

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    Circuit description
    When the brake pedal is depressed, the stop lamp switch assy sends a signal to the cruise control ecu assy. When the cruise control ecu assy receives this signal, it cancels the cruise control. A fail–safe function is provided so that cancel functions normally, even if there is a malfu ...

    Replacement
    1. Remove combination meter assembly 2. Disconnect brake master cylinder push rod clevis  remove the clip and push rod clevis pin and wave washer, and disconnect the push rod clevis from the brake pedal. 3. Remove brake pedal support sub–assy Remove the bolt from the bra ...

    Under hood
    General maintenance 1. General notes maintenance requirements vary depending on the country. Check the maintenance schedule in the owner’s manual supplement. Following the maintenance schedule is mandatory. Determine the appropriate time to service the vehicle using either miles driv ...