Toyota Corolla (E120): Circuit description

The p squib (2nd step) circuit consists of the airbag sensor assy center and instrument panel passenger airbag assy.

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

Dtc b1187/55 is recorded when ground short is detected in the p squib (2nd step) circuit.

Wiring diagram

Wiring diagram

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    If you think something is wrong
    If you notice any of the following symptoms, your vehicle probably needs adjustment or repair. Contact your Toyota dealer as soon as possible. Visible symptoms ● Fluid leaks under the vehicle. (Water dripping from the air conditioning after use is normal.) ● Flat-looking tires or u ...

    Overhaul
    Hint: overhaul the rh side by the same procedures with lh side. 1. Remove rear wheel 2. Drain brake fluid Notice: wash the brake fluid off immediately if it comes into contact with any painted surface. 3. Remove rear brake drum sub–assy Release the parking brake lever, and remove t ...

    Inspection procedure
    1 Check p/t squib(rh) circuit(airbag sensor assy center – front seat outer belt assy rh) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors between the airbag sensor assy center and the seat belt pretensio ...