DTC B1787 Rear Occupant Classification Sensor LH Collision Detection
DESCRIPTION
DTC B1787 is output when the occupant classification ECU receives a collision detection signal sent by the rear occupant classification sensor LH if 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 "Zero point calibration" and "Sensitivity check".
Therefore, if DTC B1787 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 B1787 is not output.
HINT: Codes other than DTC B1787 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 B1787 is not output.
HINT: Codes other than DTC B1787 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
Radio Broadcast cannot be Received or Poor Reception
INSPECTION PROCEDURE
1 CHECK RADIO RECEIVER
Check the radio's automatic station search function.
Check the radio's automatic station search function
by activating it.
OK:
The radio's automatic station search function
works properly.
2 CONFIRM MODEL
Result
3 INSPECT RADIO ...
Installation
1. INSTALL SPARK PLUG
(a) Install the 6 spark plugs.
Torque: 18 N*m (183 kgf*cm, 13 ft.*lbf)
2. INSTALL IGNITION COIL ASSEMBLY
(a) Install the 6 ignition coils with the 6 bolts.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
(b) Connect the 6 ignition coil connectors.
3. INSTALL NO. 1 SUR ...
Brake
GENERAL MAINTENANCE
1. INSPECT BRAKE LINE PIPES AND HOSES
HINT:
Check the entire circumference and length of the brake
hoses using a mirror as required in a well-lighted area.
Turn the front wheels fully right or left before checking
the front brakes.
(a) Check all the brake lines and h ...