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 |
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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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