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
    1. Cooling fan relay Inspect the cooling fan relay continuity.  Using an ohmmeter, check that there is continuity between terminals 1 and 2. If there is no continuity, replace the relay.  Check that there is no continuity between terminals 3 and 5. If there is conti ...

    Radiator assy
    Replacement 1. Drain coolant 2. Separate radiator hose inlet 3. Separate radiator hose outlet 4. Separate oil cooler inlet tube no.1 5. Separate oil cooler outlet tube no.1 6. Remove radiator assy  disconnect the fan motor connector.  disconnect two clamps for wire–harness fr ...

    Circuit description
    Refer to dtc p0115 Dtc no. Dtc detection condition Trouble area P0116 If engine coolant temperature (ect) was between 35 c (95 °F) and 60 c (140 °F) when starting the engine, and also conditions (a) and (b) are met:  vehicle has run with acceleration an ...