Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Occupant Classification System Malfunction (B1650,B165A)
DESCRIPTION
The airbag sensor assembly and occupant detection ECU communicate via CAN communication.
When the occupant detection ECU stores DTC B1771, B1780, B1782, B1795, B1798, B1799, U0125 or U0129, the airbag sensor assembly receives this information and stores DTC B1650.
When the occupant detection ECU stores DTC B1785 or B1787, the airbag sensor assembly receives this information and stores DTC B165A.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Test Mode / Check Mode |
|---|---|---|---|---|---|
| B1650 | Occupant Classification System Malfunction | The occupant detection ECU has stored DTC B1771, B1780, B1782, B1795, B1798, B1799, U0125 or U0129. | Occupant classification system | Comes on | Does not apply to test/check mode |
| B165A | Occupant Detection Sensor Zero Point Calibration Incomplete | The occupant detection ECU has stored DTC B1785 or B1787. | Occupant classification system | Comes on | Does not apply to test/check mode |
PROCEDURE
| 1. | CHECK DTC (OCCUPANT CLASSIFICATION SYSTEM) |
(a) Check for occupant classification system DTCs.
Click here .gif)
OK:
DTCs are not output.
| NG | .gif) | GO TO OCCUPANT CLASSIFICATION SYSTEM |
|
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| 2. | CLEAR DTC (AIRBAG SYSTEM) |
(a) Turn the engine switch on (IG), and wait for at least 60 seconds.
(b) Clear the DTCs stored in memory.
Body Electrical > SRS Airbag > Clear DTCs| NEXT | | END |
Side Satellite Sensor Bus Lost Communication (LH) (B1647,B1648)
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Driver Side Seat Position Sensor (B1653)
DESCRIPTION The seat position airbag sensor circuit consists of the airbag sensor assembly and seat position airbag sensor. DTC B1653 is stored when a malfunction is detected in the seat position airb ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Airbag System: Pressure Sensor Difference for Front Door (B166A)
DESCRIPTION The door side airbag sensor LH and door side airbag sensor RH detect impacts to the vehicle through changes in pressure inside the front doors caused by deformation of the outer side of the front doors and send signals to the airbag sensor assembly. Based on the signals sent by the door ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Occupant Classification System: Occupant Classification ECU Malfunction (B1795)
DESCRIPTION DTC B1795 is stored when a malfunction is detected in the occupant detection ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B1795 Occupant Classification ECU Malfunction Occupant detection ECU malfunction Occupant detection ECU CAUTION / NOTICE / H ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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