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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    Basic inspection
    When the malfunction is not confirmed in the dtc check, troubleshooting should be carried out in all the possible circuits considered as causes of the problem. In many cases, by carrying out the basic engine check shown in the following flowchart, the location causing the problem can be found ...

    Inspection
    1. Windshield wiper switch assy Continuity check  check the continuity of each terminal of the connector. Front wiper switch Standard: Front washer switch Standard: W/o intermittent time adjust: intermittent operation check  connect the voltmeter (+) te ...

    How to proceed with troubleshooting
    1 Vehicle brought to workshop 2 Customer problem analysis 3 Problem symptom confirmation 4 Circuit inspection 5 Repair or replace 6 Confirmation test 7 End Customer problem analysis check ...