Toyota Corolla (E120): Circuit description

The p/t squib (lh) circuit consists of the airbag sensor assy center and seat belt pretensioner (lh).

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

Dtc b0137/71 is recorded when a ground short is detected in the p/t squib (lh) circuit.

Wiring diagram

Wiring diagram

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    Precaution
    1. Handling precautions on srs airbag system The vehicle is equipped with srs (supplemental restraint system) such as the driver airbag and front passenger airbag. Failure to carry out service operation in correct sequence could cause the srs to unexpectedly deploy during servicing, po ...

    Removal & installation and disassembly & reassembly
    1. Remove oxygen sensor Remove a clip and tear off the floor mat.  disconnect a oxygen sensor connector. Remove the oxygen sensor. 2. Remove tail pipe assy Remove 2 bolts, 2 springs and tail pipe assy. 3. Remove floor panel brace front Remove 2 nuts and the ...

    Replacement
    1. Disconnect battery negative terminal 2. Remove engine under cover rh 3. Remove starter assy Disconnect the starter connector.  open the terminal cover. remove the nut, then disconnect the starter wire.  remove the 2 bolts, then remove the starter. 4. Install starter a ...