Toyota Corolla (E120): Circuit description

The airbag front rh sensor circuit consists of the airbag sensor assy center and airbag front rh sensor.

Dtc b1156/b1157/15 is recorded when a malfunction is detected in the airbag front rh sensor circuit.

Wiring diagram

Wiring diagram

Inspection procedure

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    Inspection procedure
    1 Inspect dlc3 terminal voltage(tc terminal) Turn the ignition switch to on.  measure voltage between terminals tc and cg of dlc3. Ok: voltage: 10 – 14 v 2 Check harness and connector(dlc3 – body ground) Check for open and short circuit in harness and connector betw ...

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    Circuit description
    When a misfire occurs in the engine, hydrocarbons (hc) enter the exhaust in high concentrations. If this hc concentration is high enough, there could be an increase in exhaust emissions levels. High concentrations of hc passing through the catalyst also cause to temperature of the catalyst to ...