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B1178 Infiniti Code - Right Front Seat Belt Buckle Pre-Tensioner Voltage Short

- Code Popularity: 626 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1178 Infiniti?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other 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)
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How to Fix the DTC B1178 Infiniti?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1178 Infiniti code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Air Bag Warning Light ON

Code 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
B1178 Infiniti Code - Right Front Seat Belt Buckle Pre-Tensioner Voltage Short

Need More Information on the Code?

Need more information on how to fix the B1178 Infiniti code? Get Access to Factory Service Manuals

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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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