B0126 TOYOTA - Left Front Seat Belt Buckle Switch Malfunction
- Faulty Left Front Seat Belt Buckle Switch
- Left Front Seat Belt Buckle Switch harness is open or shorted
- Left Front Seat Belt Buckle Switch circuit poor electrical connection
- Faulty Air Bag Control Module
- Air Bag Warning Light ON
B0126 Toyota DescriptionThe left front seat belt buckle switch circuit consists of the air bag center sensor and left front seat belt buckle assembly. The Air Bag Control Module monitors the Left Front Seat Belt Buckle Switch. The Air Bag Control Module sets the OBDII code when the Left Front Seat Belt Buckle Switch is not to factory specifications.
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
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