(f) Check for DTCs See: Restraints and Safety Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1785 is not output.
HINT
Codes other than DTC B1785 may be output at this time, but they are not related to this check.
NG -- REPLACE OCCUPANT CLASSIFICATION ECU
OK -- END
8. REPLACE OCCUPANT CLASSIFICATION ECU
(a) Turn the engine switch off.
(b) Disconnect the cable from the negative (-) battery terminal.
(c) Replace the occupant classification ECU See: Restraints and Safety Systems/Air Bag Systems/Seat Occupant Sensor/Service and
Repair/Occupant Classification ECU/Removal.
NEXT -- Continue to next step.
9. PERFORM ZERO POINT CALIBRATION
(a) Connect the cable to the negative (-) battery terminal.
(b) Connect the Techstream to the DLC3.
(c) Turn the engine switch on (IG).
(d) 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.
NEXT -- Continue to next step.
10. PERFORM SENSITIVITY CHECK
(a) Using the Techstream, perform Sensitivity Check See: Restraints and Safety Systems/Testing and Inspection/Programming and
Relearning.
Standard:
27 to 33 kg (59.5 to 72.8 lb)
NEXT -- END
From 08/2009
SUPPLEMENTAL RESTRAINT SYSTEMS: OCCUPANT CLASSIFICATION SYSTEM: B1785: Front Occupant Classification Sensor
LH Collision Detection
B1785 - Front Occupant Classification Sensor LH Collision Detection
DESCRIPTION
DTC B1785 is stored when the occupant classification ECU receives a collision detection signal sent by the front occupant classification sensor LH
if an accident occurs.
DTC B1785 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 B1785, the DTC can be
cleared by performing the Zero Point Calibration and Sensitivity Check.
Therefore, if DTC B1785 is output, first perform Zero Point Calibration and Sensitivity Check.
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