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B1178 INFINITI

B1178 INFINITI - Right Front Seat Belt Buckle Pre-Tensioner Voltage Short

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

  • Faulty Right Front Seat Belt Buckle Pre-Tensioner
  • Right Front Seat Belt Buckle Pre-Tensioner harness is open or shorted
  • Right Front Seat Belt Buckle Pre-Tensioner circuit poor electrical connection
  • Faulty Air Bag Sensor Unit (Air Bag Control Module)

Possible symptoms

  • Air Bag Warning Light ON

B1178 Infiniti Description

The Air Bag Sensor Unit (Air Bag Control Module) monitors the Right Side Front Seat Belt Buckle Pre-Tensioner. The Air Bag Sensor Unit sets the OBDII code when the circuit for front Right Front Seat Belt Buckle Pre-Tensioner is shorted to some power supply circuit.
OBDII Code B1178 Infiniti - Right Front Seat Belt Buckle Pre-Tensioner Voltage Short - AutoCodes.com

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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