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 b1185/57 is recorded when a short is detected in the p squib (2nd step) circuit.

Wiring diagram

Wiring diagram

Inspection procedure

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    System description
    The ecm uses the signals from the throttle position sensor, air–flow meter and crankshaft position sensor to monitor the engagement condition of the lock–up clutch. Then the ecm compares the engagement condition of the lock–up clutch with the lock–up schedule in the ecm memory to de ...

    Replacement
    Hint: installation is in the reverse order of the removal. But the installation is indicated only when it has a point. In the lh side, work in the same procedure as in the rh side. 1. Disconnect battery negative terminal 2. Remove front seat assembly rh 3. Remove front seat inner be ...

    Inspection procedure
    1 Check p squib circuit(airbag sensor assy center – instrument panel passenger airbag assy) Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connector between the airbag sensor assy center and the instrument panel ...