B1177 Infiniti Code - Right Front Seat Belt Buckle Pre-Tensioner Open
Quick Answer
The Air Bag Sensor Unit (Air Bag Control Module) monitors the Right Side Front Seat Belt Buckle Pre-Tensioner. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1177 Infiniti indicates Right Front Seat Belt Buckle Pre-Tensioner Open.
- Common causes
- Common causes include 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.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1177 Infiniti Description
What are the Possible Causes of the DTC B1177 Infiniti?
- 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)
How to Fix the DTC B1177 Infiniti?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1177 Infiniti code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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.
Frequently Asked Questions about B1177 Infiniti Code
1. What does the OBDII code B1177 mean on an Infiniti?
The code B1177 indicates an open circuit in the right front seat belt buckle pre-tensioner, meaning there is an electrical issue in the system responsible for tightening the seat belt during a collision.
2. What are the common symptoms of code B1177?
Symptoms may include an illuminated airbag warning light on the dashboard and the potential for the right front seat belt pre-tensioner to not function properly in an accident.
3. What causes the B1177 code to appear?
Common causes include damaged wiring, a faulty seat belt buckle pre-tensioner, a corroded or loose connector, or a malfunction in the airbag control module.
4. Can I still drive my Infiniti with the B1177 code?
Yes, you can still drive the vehicle, but the airbag system may not function properly in an accident, which is a critical safety concern.
5. How do I diagnose the B1177 code in my Infiniti?
Start by inspecting the wiring and connectors for the right front seat belt pre-tensioner. Use a multimeter to check for continuity and consult the vehicle's service manual for specific procedures.
6. How can I fix the B1177 code?
Repairs may involve replacing the right front seat belt buckle pre-tensioner, repairing or replacing damaged wiring, or clearing corrosion on connectors. In some cases, the airbag control module may need reprogramming.
7. Does the B1177 code require professional repair?
While minor issues like loose connectors can be fixed by a knowledgeable DIYer, diagnosing and repairing airbag-related systems is best left to professionals due to the safety risks involved.
8. Will clearing the B1177 code with a scan tool fix the issue?
Clearing the code will only turn off the warning temporarily. The underlying issue must be resolved to prevent the code from returning.
9. How much does it cost to repair the B1177 code?
The repair cost varies depending on the issue but can range from $50 for minor wiring repairs to $500 or more if the seat belt buckle pre-tensioner needs replacement.
10. Can a faulty airbag module cause the B1177 code?
Yes, a malfunctioning airbag module can potentially trigger this code, as it controls the seat belt pre-tensioner system.
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