Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Airbag ECU Malfunction1 (B1160-B1167)
DESCRIPTION
The airbag sensor assembly consists of the acceleration sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.
If the airbag sensor assembly receives signals from the acceleration sensor and pressure sensor, it determines whether the airbags, pretensioners and selectable force limiter should be deployed.
These DTCs are stored when a malfunction is detected in the airbag sensor assembly.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Warning Indicate | Test Mode / Check Mode |
|---|---|---|---|---|---|
| B1160 | Airbag ECU Malfunction1 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1161 | Airbag ECU Malfunction2 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1162 | Airbag ECU Malfunction3 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1163 | Airbag ECU Malfunction4 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1164 | Airbag ECU Malfunction5 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1165 | Airbag ECU Malfunction6 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1166 | Airbag ECU Malfunction7 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
| B1167 | Airbag ECU Malfunction8 | Airbag sensor assembly malfunction | Airbag sensor assembly | Comes on | Does not apply to test/check mode |
CAUTION / NOTICE / HINT
HINT:
If any DTCs other than B1160, B1161, B1162, B1163, B1164, B1165, B1166 and B1167 are also output, troubleshoot those DTCs first.
PROCEDURE
| 1. | CHECK DTC |
(a) Turn the engine switch on (IG), and wait for at least 60 seconds.
(b) Check for DTCs.
Body Electrical > SRS Airbag > Trouble CodesNOTICE:
If only DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 is output, do not clear the DTC, replace the airbag sensor assembly.
| Result | Proceed to |
|---|---|
| Only DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 is output | A |
| DTC B1160, B1161, B1162, B1163, B1164, B1165, B1166 or B1167 and other DTCs are output | B |
| A | .gif) | REPLACE AIRBAG SENSOR ASSEMBLY |
| B | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
.gif)
Vehicle Control History
VEHICLE CONTROL HISTORY Function Overview (a) The vehicle control history is a function that records control data (record data) when triggered by specific vehicle behavior or user input. Checking the ...
Front Airbag Sensor (RH) (B1610)
DESCRIPTION The front airbag sensor RH circuit consists of the airbag sensor assembly and front airbag sensor RH. The front airbag sensor RH detects impacts to the vehicle and sends signals to the air ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Tilt And Power Telescopic Steering Column System: Tilt Position Sensor or Tilt Motor Circuit Malfunction (B2610)
DESCRIPTION The tilt motor is operated by the power source voltage supplied from the multiplex tilt and telescopic ECU and tilts the steering column up and down. The tilt position sensor (Hall IC) in the tilt motor detects the tilt angle of the steering column and sends a signal to the multiplex til ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Air Conditioning System: Rear Room Temperature Sensor Circuit (B1419/19)
DESCRIPTION The cooler (No. 2 room temp. sensor) thermistor is installed in the rear panel to detect the rear cabin temperature, which is used to control the air conditioning system. The resistance of the cooler (No. 2 room temp. sensor) thermistor changes in accordance with the rear cabin temperatu ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
- For your information
- Pictorial index
- For safety and security
- Instrument cluster
- Operation of each component
- Driving
- Lexus Display Audio system
- Interior features
- Maintenance and care
- When trouble arises
- Vehicle specifications
- For owners
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
0.0238