B1940 2017 Toyota RAV4 Code - Short in Selectable Force Limiter Squib Right Circuit
Quick Answer
The B1940 code for a 2017 Toyota RAV4 indicates a short in the selectable force limiter squib right circuit. Common causes include Wiring harness damage or wear, Faulty squib or airbag module, Corrosion or moisture in the circuit. 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
- B1940 2017 Toyota RAV4 indicates Short in Selectable Force Limiter Squib Right Circuit.
- Common causes
- Common causes include Wiring harness damage or wear, Faulty squib or airbag module, Corrosion or moisture in the circuit.
- 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.
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Code B1940 2017 Toyota RAV4 Description
The B1940 code for a 2017 Toyota RAV4 indicates a short in the selectable force limiter squib right circuit. The selectable force limiter squib is a component of the vehicle's airbag system that is responsible for controlling the force applied by the seatbelt during a collision. When this circuit experiences a short, it can compromise the effectiveness of the airbag system and potentially impact the vehicle's safety.
Common Causes of B1940 2017 Toyota RAV4
- Wiring harness damage or wear
- Faulty squib or airbag module
- Corrosion or moisture in the circuit
- Electrical short due to a loose connection
- Impact or collision that damaged the circuit
Symptoms of B1940 2017 Toyota RAV4
- Airbag warning light illuminated on the dashboard
- Inconsistent or ineffective seatbelt tension during braking or acceleration
- Unusual clicking or buzzing noises coming from the seatbelt mechanism
- Failure of the airbag to deploy during a collision
How to Fix B1940 2017 Toyota RAV4
- Begin by conducting a thorough visual inspection of the wiring harness and connectors for any signs of damage or wear.
- Use a multimeter to test the continuity of the circuit and identify any areas where a short may be occurring.
- If necessary, replace the selectable force limiter squib or airbag module to address any internal faults.
- Repair or replace any damaged wiring or connectors to ensure a secure and reliable connection.
- Clear the diagnostic trouble codes from the vehicle's system and perform a test to verify that the issue has been resolved.
Cost to Fix B1940 2017 Toyota RAV4
The typical repair costs for addressing a short in the selectable force limiter squib right circuit can vary depending on the extent of the damage and the specific components that need to be replaced. In general, this type of repair may range from $200 to $500, including parts and labor. However, it is important to note that the actual costs can be higher or lower based on factors such as the location of the repair shop, the make and model of the vehicle, and the expertise of the technician. Customers should inquire with their local auto repair shops for more accurate estimates based on their individual circumstances. Labor rates typically range between $80 and $150 per hour, with variations in rates at dealerships, independent shops, and metropolitan areas.
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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 B1940 2017 Toyota RAV4 Code
1. What does the OBDII code B1940 mean for a 2017 Toyota RAV4?
The code B1940 indicates a short circuit in the selectable force limiter squib (right-hand side) of the airbag system, which may affect the proper deployment of the seat belt pretensioner or airbag.
2. What are the common symptoms of the B1940 code in a 2017 Toyota RAV4?
The most common symptoms include an illuminated airbag warning light on the dashboard and potential malfunction of the seat belt pretensioner or airbag system.
3. What causes the B1940 code to appear in a 2017 Toyota RAV4?
This code is typically caused by damaged wiring, a short circuit in the selectable force limiter squib circuit, a faulty seat belt pretensioner, or a defective airbag control module.
4. Is the B1940 code dangerous to drive with in a 2017 Toyota RAV4?
Yes, it can be dangerous as it indicates a fault in the airbag or seatbelt system, which may not function properly in the event of a collision.
5. How is the B1940 code diagnosed in a 2017 Toyota RAV4?
A technician will use a scan tool to retrieve the code, inspect the selectable force limiter squib right circuit wiring, and test the seat belt pretensioner and airbag system components for faults.
6. Can I fix the B1940 code on my 2017 Toyota RAV4 myself?
Unless you have advanced knowledge of automotive electronics and safety systems, it is not recommended to attempt repairs yourself due to the complexity and importance of the airbag system.
7. What repairs are typically needed to resolve the B1940 code in a 2017 Toyota RAV4?
Repairs may include replacing damaged wiring, repairing a short circuit, replacing the seat belt pretensioner, or reprogramming or replacing the airbag control module.
8. How much does it cost to fix the B1940 code in a 2017 Toyota RAV4?
Repair costs vary but may range from $150 to $1,000 depending on whether wiring repairs, seat belt pretensioner replacement, or airbag module replacement is required.
9. Can a discharged battery trigger the B1940 code in a 2017 Toyota RAV4?
A discharged or weak battery is unlikely to cause this specific code, but sudden power loss or improper reconnection of the battery could potentially affect airbag system diagnostics.
10. Will clearing the B1940 code with a scan tool fix the problem in a 2017 Toyota RAV4?
No, simply clearing the code will not fix the underlying issue. The root cause must be addressed to ensure the airbag and seatbelt systems function properly.
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