Lexus NX: Airbag ECU Malfunction (B1000)
DESCRIPTION
The airbag ECU assembly consists of a deceleration sensor, safing sensor, drive circuit, diagnosis circuit, ignition control, etc.
If the airbag ECU assembly receives signals from the deceleration sensor, it determines whether or not the SRS should be activated.
DTC B1000 is stored when a malfunction is detected in the airbag ECU assembly.
DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
B1000 | Airbag ECU Malfunction | An airbag ECU assembly malfunction. | Airbag ECU assembly |
CAUTION / NOTICE / HINT
NOTICE:
After replacing the airbag ECU assembly, refer to initialization.
Click here
PROCEDURE
(a) Check for DTCs.
Click here
Body Electrical > SRS Airbag > Trouble Codes
NOTICE:
If only DTC B1000 is output, do not clear the DTCs. Replace the airbag ECU assembly.
HINT:
If any DTCs other than DTC B1000 are also output, troubleshoot those DTCs first.
DTC B1000 is output | | REPLACE AIRBAG ECU ASSEMBLY |
DTC B1000 and other DTCs are output | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
READ NEXT:
DESCRIPTION The front airbag sensor RH consists of a diagnostic circuit and frontal deceleration sensor, etc. If the airbag ECU assembly receives signals from the frontal deceleration sensor, it deter
DESCRIPTION The front airbag sensor RH circuit consists of the airbag ECU assembly and front airbag sensor RH. The front airbag sensor RH detects impacts to the vehicle and sends signals to the airbag
DESCRIPTION The front airbag sensor LH consists of a diagnostic circuit and frontal deceleration sensor, etc. If the airbag ECU assembly receives signals from the frontal deceleration sensor, it deter
SEE MORE:
REMOVAL CAUTION / NOTICE / HINT HINT:
Use the same procedure for the RH and LH sides.
The procedure described below is for the LH side.
PROCEDURE 1. REMOVE FRONT BUMPER ASSEMBLY (a) except Sport Package: Click here (b) for Sport Package: Click here 2. REMOVE HEADLIGHT ASSEMBLY LH (a) App
DESCRIPTION There may be an open circuit in one of the CAN main bus wire and/or a central gateway ECU (network gateway ECU) branch wire when the resistance between terminals 18 (CA4H) and 17 (CA4L) of the central gateway ECU (network gateway ECU) is 70 Ω or higher. Symptom Trouble Area Res
© 2016-2025 Copyright www.lexunx.com
