From 08/2009
SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: B1786: Front Occupant Classification Sensor
RH Collision Detection
B1786 - Front Occupant Classification Sensor RH Collision Detection
DESCRIPTION
DTC B1786 is stored when the occupant classification ECU receives a collision detection signal sent by the front occupant classification sensor RH
if an accident occurs.
DTC B1786 is also stored when the front seat assembly RH is subjected to a strong impact, even if an actual accident does not occur.
If the vehicle is not in a collision, but the occupant classification ECU outputs a collision detection signal and sets DTC B1786, the DTC can be
cleared by performing the Zero Point Calibration and Sensitivity Check.
Therefore, if DTC B1786 is output, first perform Zero Point Calibration and Sensitivity Check.
HINT
When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant
classification ECU. When DTC B1786 is output, perform troubleshooting for the DTC.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. PERFORM ZERO POINT CALIBRATION
(a) Connect the Techstream to the DLC3.
(b) Turn the engine switch on (IG).
(c) Using the Techstream, perform Zero Point Calibration See: Restraints and Safety Systems/Testing and Inspection/Programming and
Relearning.
OK:
"Zero Point Calibration is complete." is displayed.
NG -- REPLACE FRONT SEAT ASSEMBLY RH
OK -- Continue to next step.
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