B1943 Toyota Code - Short to Positive in Selectable Force Limiter Squib Right Circuit
Quick Answer
The Selectable Force Limiter Squib Right (RH) Circuit consists of the Center Airbag Sensor Assembly and Front Seat Outer Belt Assembly Right (RH). Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Selectable Force Limiter Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt Assembly Right 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
- B1943 Toyota indicates Short to Positive in Selectable Force Limiter Squib Right Circuit.
- Common causes
- Common causes include Faulty Front Seat Outer Belt Assembly Right (RH) (Selectable Force Limiter Squib Right), Front Seat Outer Belt Assembly Right harness is open or shorted, Front Seat Outer Belt Assembly Right 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 B1943 Toyota Description
What are the Possible Causes of the DTC B1943 Toyota?
- Faulty Front Seat Outer Belt Assembly Right (RH) (Selectable Force Limiter Squib Right)
- Front Seat Outer Belt Assembly Right harness is open or shorted
- Front Seat Outer Belt Assembly Right circuit poor electrical connection
- Faulty Center Airbag Sensor Assembly
How to Fix the DTC B1943 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 B1943 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
- B1943 2013 Toyota RAV4 — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 2014 Toyota RAV4 — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 2015 Toyota RAV4 — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 2016 Toyota RAV4 — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 2017 Toyota RAV4 — Short to Positive in Selectable Force Limiter Squib Right Circuit
- B1943 2018 Toyota RAV4 — Short to Positive in Selectable Force Limiter Squib Right 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 B1943 Toyota Code
1. What does OBDII code B1943 mean in a Toyota?
Code B1943 indicates a "Short to Positive in Selectable Force Limiter Squib Right Circuit," which is related to the airbag system and involves a potential electrical fault in the right-side force limiter squib.
2. What are the common symptoms of code B1943 in a Toyota?
The most common symptom is the airbag warning light illuminating on the dashboard, indicating a potential fault in the airbag system.
3. What causes the B1943 code to be triggered?
This code is typically caused by a short circuit to positive voltage in the wiring, a faulty force limiter squib, damaged connectors, or a malfunction in the airbag control module.
4. Is it safe to drive with code B1943 active?
Driving with code B1943 active is not recommended, as it indicates a fault in the airbag system, which may not deploy properly in the event of a collision.
5. How can I diagnose code B1943 in my Toyota?
To diagnose the issue, visually inspect the wiring and connectors for damage or corrosion, use a multimeter to check for shorts to positive voltage, and scan the airbag system with an OBDII scanner designed for Toyota vehicles.
6. What repairs are needed to fix code B1943?
Repairs may include replacing damaged wiring or connectors, repairing a short circuit, or replacing the faulty force limiter squib or airbag control module.
7. Can I clear the B1943 code without repairing the issue?
While you can clear the code using an OBDII scanner, the airbag warning light will likely return if the root cause is not addressed, and the airbag system may remain non-functional.
8. How much does it cost to repair code B1943 in a Toyota?
The cost depends on the specific issue, but repairs may range from $100 for wiring fixes to over $1,000 if the airbag control module or squib needs replacement.
9. Can a faulty clock spring cause code B1943?
While a faulty clock spring typically affects steering wheel-mounted controls or the driver’s airbag, it’s unlikely to cause code B1943, which pertains to the selectable force limiter squib on the passenger side.
10. Do I need professional help to fix the B1943 code?
Due to the complexity and safety risks of working with the airbag system, it’s highly recommended to seek professional assistance to ensure proper diagnosis and repair.
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