DTC B1788 Rear Occupant Classification Sensor RH Collision Detection
DESCRIPTION
DTC B1788 is output when the occupant classification ECU receives a collision detection signal sent by the rear occupant classification sensor RH if an accident occurs.
DTC B1788 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 B1788 can be cleared by "Zero point calibration" and "Sensitivity check".
Therefore, if DTC B1788 is output, first perform "Zero point calibration" and "Sensitivity check".
WIRING DIAGRAM
INSPECTION PROCEDURE
1 PERFORM ZERO POINT CALIBRATION
OK: "COMPLETED" is displayed.
2 PERFORM SENSITIVITY CHECK
Standard value: 27 to 33 kg (59.52 to 72.75 lb)
3 CHECK DTC
OK: DTC B1788 is not output.
HINT: Codes other than DTC B1788 may be output at this time, but they are not related to this check.
4 REPLACE FRONT SEAT ASSEMBLY RH
HINT: Perform the inspection using parts from a normal vehicle if possible
5 PERFORM ZERO POINT CALIBRATION
OK: "COMPLETED" is displayed.
6 PERFORM SENSITIVITY CHECK
Standard value: 27 to 33 kg (59.52 to 72.75 lb)
7 CHECK DTC
HINT: First clear DTCs stored in the occupant classification ECU and then in the center airbag sensor assembly.
OK: DTC B1788 is not output.
HINT: Codes other than DTC B1788 may be output at this time, but they are not related to this check.
8 REPLACE OCCUPANT CLASSIFICATION ECU
9 PERFORM ZERO POINT CALIBRATION
OK: "COMPLETED" is displayed.
10 PERFORM SENSITIVITY CHECK
Standard value: 27 to 33 kg (59.52 to 72.75 lb)
END
Replacing light bulbs
Headlight low beams (halogen bulb)
For left side only: Open the fuse box cover.
Unplug the connector while
pushing the lock release.
Turn the bulb base counterclockwise.
Install a new light bulb.
Align the 3 tabs on the light bulb
with the mounting, and insert.
...
Power back door system
PARTS LOCATION
...
Disassembly
1. REMOVE REAR DOOR WINDOW FRAME MOULDING
REAR LH (See page ET-31)
2. REMOVE REAR DOOR WINDOW FRAME MOULDING
SUB-ASSEMBLY LH (See page ET-32)
3. REMOVE SLIDE DOOR WINDOW GARNISH LH
Fully open the slide door window.
Remove the glass run.
Using a screwdriver, disengage the clip and rem ...