Toyota Corolla (E120): Circuit description

The airbag sensor assy center consists of a airbag sensor assy center, safing sensor, drive circuit, diagnosis circuit and ignition control, etc.

It receives signals from the airbag sensor, judges whether or not the srs must be activated, and detects diagnosis system malfunction.

Dtc b1100/31 is recorded when occurrence of a malfunction in the airbag sensor assy center is detected.

Inspection procedure

Inspection procedure

Hint

: when a malfunction code other than code b1100/31 is displayed at the same time, first repair the malfunction indicated by the malfunction code other than code b1100/31.

    Share this page:

    Other materials:

    Circuit description
    The ecm compares the two waveforms of the heated oxygen sensors located before and after the catalyst to determine whether or not the catalyst performance has deteriorated. Air–fuel ratio feedback compensation keeps the waveform of the heated oxygen sensor in front of the catalyst alterna ...

    Overhaul
    Hint: overhaul the rh side by the same procedure as the lh side. 1. Remove front wheel 2. Drain brake fluid Notice: wash the brake fluid off immediately if it comes into contact with any painted surface. 3. Remove front disc brake cylinder sub–assy Remove the union bolt and gasket ...

    Definition of terms
    Term Definition Monitor description Description of what the ecm monitors and how it detects malfunction (monitoring purpose and its details). Related dtcs Diagnostic code Typical enabling condition Preconditions that allow the ecm to detect m ...