DESCRIPTION DTC B1795 is stored when a malfunction is detected in the occupant detection ECU.
CAUTION / NOTICE / HINT NOTICE: After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work. Click here HINT: When DTC B1650 is stored as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant detection ECU. When DTC B1795 is output, perform troubleshooting for this DTC first. PROCEDURE
(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 B1795 is not output. HINT: Codes other than DTC B1795 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 occupant detection ECU with a new one. 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 > Lane Departure Alert System (w/ Steering Control)(for Hv Model): Lost Communication with TCM (U0101,U0123,U0126,U0129,U0131,U0142,U0155,U0293)
DESCRIPTION When a malfunction is detected between various ECUs and sensors, these DTCs are stored. DTC No. Detection Item DTC Detection Condition Trouble Area U0101 Lost Communication with TCM 2 seconds after the power switch is turned on (IG), while the vehicle is being driven at 1 km/h or 1 mph o ...