Description
Dtc b1785 is output when the occupant classification ecu receives a collision detection signal sent by the front occupant classification sensor lh when an accident occurs.
Dtc b1785 is also output when the front seat rh is subjected to a strong impact, even if an actual accident does not occur.
However, when the occupant classification ecu outputs a collision detection signal, even if the vehicle is not in a collision, dtc b1785 can be cleared by performing the zero point calibration and sensitivity check.
Therefore, when dtc b1785 is output, first perform the zero point calibration and sensitivity check.
Wiring diagram
Inspection procedure
Ok: completed is displayed.
Standard value: 27 to 33 kg (59.52 To 72.75 Lb)
Hint:
First clear dtcs stored in the occupant classification ecu and then in the center airbag sensor.
Ok: dtc b1785 is not output.
Hint:
Dtcs other than dtc b1785 may be output at this time, but they are not related to this check.
Hint:
Perform the inspection using parts from a normal vehicle if possible.
Ok: completed is displayed.
Standard value: 27 to 33 kg (59.52 To 72.75 Lb)
Hint:
First clear dtcs stored in the occupant classification ecu and then in the center airbag sensor.
Ok: dtc b1785 is not output.
Hint:
Dtcs other than dtc b1785 may be output at this time, but they are not related to this check.
Ok: completed is displayed.
Standard value: 27 to 33 kg (59.52 To 72.75 Lb)
End
Problem symptoms table
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms
are listed in order of probability in the "suspected area"
column of the table. Check each symptom by checking the
suspected areas in the order they are listed. Re ...
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Replacement
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Prolonged and repeated contact with engine oil will
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