(f) Turn the engine switch off.
(g) Turn the engine switch on (IG).
(h) Check for DTCs See: Restraints and Safety Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes.
OK:
DTC B1780 is not output.
HINT
Codes other than DTC B1780 may be output at this time, but they are not related to this check.
NG -- REPLACE OCCUPANT CLASSIFICATION ECU
OK -- USE SIMULATION METHOD TO CHECK See: Accessories and Optional Equipment/Antitheft and Alarm
Systems/Diagrams/Diagnostic Aids/How To Troubleshoot ECU Controlled Systems/How To Proceed With Troubleshooting
7. 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.
HINT
Perform the inspection using parts from a normal vehicle if possible.
NEXT -- Continue to next step.
8. 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.
NG -- REPLACE FRONT SEAT ASSEMBLY RH
OK -- Continue to next step.
9. 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)
NG -- REPLACE FRONT SEAT ASSEMBLY RH
OK -- Continue to next step.
10. CHECK DTC
(a) Turn the engine switch on (IG).
(b) Clear the DTCs stored in the occupant classification ECU See: Restraints and Safety Systems/Testing and Inspection/Reading and
Clearing Diagnostic Trouble Codes.
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