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.
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PROCEDURE
| 1. | CHECK DTC |
(a) Check for DTCs.
Click here
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 | .gif) | REPLACE AIRBAG ECU ASSEMBLY |
| DTC B1000 and other DTCs are output | | GO TO DIAGNOSTIC TROUBLE CODE CHART |
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Inspection
INSPECTION PROCEDURE 1. INSPECT TRIP SWITCH *1 ODO TRIP Switch *a Component without harness connected (Trip Switch) (a) Check the resistance. Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Switch Condition Specified
Before driving
Observe the following before starting
off in the vehicle to ensure
safety of driving.
Installing floor mats
Use only floor mats designed specifically
for vehicles of the same model
and model year as your vehicle. Fix
them securely in place onto the carpet.
1. Insert the retaining hooks (clip
