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".
DTC No. |
DTC Detection Condition |
Trouble Area |
B1788 |
|
|
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
Installation
1. INSTALL SLIDE DOOR ROLLER ASSEMBLY UPPER
Apply MP grease to the rotating area of the roller.
Install the roller with the 2 bolts.
Torque: 13 N*m (130 kgf*cm, 10 ft.*lbf)
2. INSTALL SLIDE DOOR HINGE ASSEMBLY CENTER LH
Apply MP grease to the rotating areas of the hinge.
Ins ...
DTC check / clear
HINT: If the system cannot enter the diagnostic mode,
inspect all AVC-LAN communication signals and repair or replace problem parts.
1. STARTING DIAGNOSTIC MODE
Turn the ignition switch to the ACC position.
Turn off the audio system.
While pressing the preset switche ...
Inspection
1. INSPECT FRONT DRIVE SHAFT ASSEMBLY LH
(a) Check that there is no remarkable play in the radial
direction of the outboard joint.
(b) Check that the inboard joint slides smoothly in the
thrust direction.
(c) Check that there is no remarkable play in the radial
direction of the inboard ...