Description
Dtc b1787 is output when the occupant classification ecu receives a collision detection signal sent by the rear occupant classification sensor lh when an accident occurs.
Dtc b1787 is also output when the front seat assembly 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 b1787 can be cleared by performing the zero point calibration and sensitivity check.
Therefore, when dtc b1787 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 b1787 is not output.
Hint:
Dtcs other than dtc b1787 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 b1787 is not output.
Hint:
Dtcs other than dtc b1787 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
Check for short circuit
If the wire harness is ground shorted (fig. 5), Locate
the section by conducting a resistance check with
the body ground (below).
Check the resistance with the body ground.
Disconnect connectors a and c, and measure
the resistance
Standard resistance (fig. 6)
Hint:
Measure ...
Components
...
Rear upper control arm
Components
Removal
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
Remove rear wheel
Disconnect skid control sensor wire (for
2wd) (see page bc-198)
Disconnect rear speed sensor lh (for 4wd)
(see page bc-205)
Rem ...