B1877 Toyota Code - Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
Quick Answer
The Front Seat Cushion Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and the Front Seat Airbag Sub-Assembly. Common causes include Faulty Front Seat Airbag Sub-Assembly (Front Seat Cushion Squib Right), Front Seat Airbag Sub-Assembly harness is open or shorted, Front Seat Airbag Sub-Assembly 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
- B1877 Toyota indicates Short to Ground in Passenger Side Front Seat Cushion Squib Circuit.
- Common causes
- Common causes include Faulty Front Seat Airbag Sub-Assembly (Front Seat Cushion Squib Right), Front Seat Airbag Sub-Assembly harness is open or shorted, Front Seat Airbag Sub-Assembly 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 B1877 Toyota Description
What are the Possible Causes of the DTC B1877 Toyota?
- Faulty Front Seat Airbag Sub-Assembly (Front Seat Cushion Squib Right)
- Front Seat Airbag Sub-Assembly harness is open or shorted
- Front Seat Airbag Sub-Assembly circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1877 Toyota?
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 B1877 Toyota 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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Information for Specific Toyota Models
- B1877 2013 Toyota RAV4 — Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
- B1877 2014 Toyota RAV4 — Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
- B1877 2015 Toyota RAV4 — Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
- B1877 2016 Toyota RAV4 — Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
- B1877 2017 Toyota RAV4 — Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
- B1877 2018 Toyota RAV4 — Short to Ground in Passenger Side Front Seat Cushion Squib Circuit
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 B1877 Toyota Code
1. What does the OBDII code B1877 mean on a Toyota?
The B1877 code indicates a short to ground in the passenger side front seat cushion squib circuit, which is part of the airbag system.
2. What are the common symptoms of the B1877 code in a Toyota?
Symptoms include the airbag warning light being illuminated on the dashboard and the airbag system potentially being disabled.
3. What causes the B1877 code to appear?
Common causes include damaged wiring, a faulty seat cushion squib, a short to ground in the circuit, or a malfunctioning airbag control module.
4. Can I drive my Toyota with the B1877 code active?
While the vehicle may still be drivable, the airbag system may not function during a collision, so it’s important to address the issue promptly for safety.
5. How do I diagnose the B1877 code in my Toyota?
Diagnosing the code involves inspecting the seat cushion squib wiring for damage, checking for a short to ground, and testing the airbag control module using a multimeter or scan tool.
6. What repairs are needed to fix the B1877 code?
Repairs may include replacing damaged wiring or connectors, replacing the seat cushion squib, or repairing or replacing the airbag control module if necessary.
7. How much does it cost to fix the B1877 code on a Toyota?
The repair cost varies depending on the specific issue, but it could range from $100 for wiring repairs to over $500 if the squib or airbag control module needs replacement.
8. Can I reset the B1877 code without repairing the issue?
Clearing the code without fixing the problem will not resolve the underlying issue, and the airbag light will likely return.
9. Is the B1877 code covered under warranty for my Toyota?
This depends on your vehicle’s warranty and age. Airbag components may be covered under a safety or extended warranty, so check with your dealer.
10. Should the airbag system be disabled when working on the B1877 code?
Yes, always disconnect the battery and wait several minutes before working on airbag components to prevent accidental deployment.
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