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B1150 TOYOTA

B1150 TOYOTA - Occupant Classification System Malfunction

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3   
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Possible causes

  • Faulty Occupant classification system
  • Faulty Airbag Sensor Assembly Center
  • Right front seat wire

Tech notes

There is factory service bulletin for the following Toyota models:

2004 Toyota Highlander
2004 Toyota Camry
2004 Toyota Solara
2004 Toyota Highlander B1650 OBDDII Code

When is the code detected?

The B1150 code is recorder when a malfunction is detected in the occupant classification system.

Possible symptoms

  • Airbag Warning Light ON

B1150 Toyota Description

The occupant classification system circuit consists of the Airbag Sensor Assembly Center and the occupant classification system. If the airbags sensor assy center receives signals from the occupant classification ECU, it determines whether or not the front passenger airbag assy and the front seat airbag assy sight should be operated.
OBDII Code B1150 Toyota - Occupant Classification System Malfunction - AutoCodes.com

B1150 Toyota Information for specific Toyota models

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.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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Related Information

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