DESCRIPTION DTC B1785 is stored when the occupant detection ECU receives a collision detection signal sent by the front occupant classification sensor LH in the case of an accident. DTC B1785 is also stored when the front seat assembly RH is subjected to a strong impact, even if an actual accident did not occur. If the vehicle was not in a collision, but the occupant detection ECU receives a collision detection signal and stores DTC B1785, the DTC can be cleared by performing zero point calibration. Therefore, if DTC B1785 is output, first perform zero point calibration.
CAUTION / NOTICE / HINT NOTICE:
HINT: When DTC B165A is stored as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant detection ECU. When DTC B1785 is output, perform troubleshooting for this DTC first. PROCEDURE
(a) Using the Techstream, perform Zero Point Calibration. Click here OK: "Zero Point Calibration is complete." is displayed.
(a) Turn the engine switch on (IG), and wait for at least 60 seconds. (b) Clear the DTCs stored in the occupant detection ECU. Body Electrical > Occupant Detection > Clear DTCs(c) Clear the DTCs stored in the airbag ECU assembly. Body Electrical > SRS Airbag > Clear DTCs(d) Turn the engine switch off. (e) Turn the engine switch on (IG), and wait for at least 10 seconds. (f) Check for DTCs. Body Electrical > Occupant Detection > Trouble CodesOK: 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. (g) Turn the engine switch off.
(a) Turn the engine switch off. (b) Disconnect the cable from the negative (-) battery terminal. (c) Replace the separate type front seat cushion spring assembly RH. Click here
(d) Connect the cable to the negative (-) battery terminal.
(a) Using the Techstream, perform Zero Point Calibration. Click here
(a) Turn the engine switch off. (b) Disconnect the cable from the negative (-) battery terminal. (c) Replace the separate type front seat cushion spring assembly RH. Click here
(d) Connect the cable to the negative (-) battery terminal.
(a) Using the Techstream, perform Zero Point Calibration. Click here
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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Smart Key System(for Entry Function, Gasoline Model): Touching Unlock Sensor for Certain Period of Time does not Unlock All Doors
DESCRIPTION If the entry unlock function of the driver door cannot be operated by touching and holding the unlock sensor of the driver door, but can be operated through other methods, it can be determined that the request code is being transmitted properly from the driver door. In this case, the cer ...
