B141C Mercury Code - Second Row Passenger Inflatable Seatbelt Deployment Control Circuit
Quick Answer
The Restraint Control Module (RCM) continuously monitors the second row right safety belt inflator and circuits for the following faults: Resistance out of range, Unexpected voltage, Short to ground, Faulted second row right safety belt inflator. Common causes include Faulty Second Row Passenger Inflatable Seatbelt, Second Row Passenger Inflatable Seatbelt harness is open or shorted, Second Row Passenger Inflatable Seatbelt 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
- B141C Mercury indicates Second Row Passenger Inflatable Seatbelt Deployment Control Circuit.
- Common causes
- Common causes include Faulty Second Row Passenger Inflatable Seatbelt, Second Row Passenger Inflatable Seatbelt harness is open or shorted, Second Row Passenger Inflatable Seatbelt 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 B141C Mercury Description
The RCM analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the PID is the deployment loop resistance measured by the RCM. If the value displayed is lower or higher than the desired range, the RCM can set a DTC. As the deployment loop resistance drifts farther outside the desired range, the chance for a DTC increases. Small variations in resistance can occur due to the effect of road vibrations on terminal fit. Crimps and terminals can be affected by stress and harness movement and can cause an increase in resistance due to wire strain. These variables can result in an intermittent fault. For this reason, the test requires the PID value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand DTC at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern.
What are the Possible Causes of the DTC B141C Mercury?
- Faulty Second Row Passenger Inflatable Seatbelt
- Second Row Passenger Inflatable Seatbelt harness is open or shorted
- Second Row Passenger Inflatable Seatbelt circuit poor electrical connection
- Faulty Restraint Control Module (RCM)
How to Fix the DTC B141C Mercury?
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.
Code Tech Notes
B141C:12 Second Row Passenger Inflatable Seatbelt Deployment Control Circuit Short to Battery
B141C:13 Second Row Passenger Inflatable Seatbelt Deployment Control Circuit Open
B141C:1A Second Row Passenger Inflatable Seatbelt Deployment Control Circuit Resistance Below Threshold
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B141C Mercury 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 B141C Mercury Code
1. What are the common symptoms of OBDII code B141C in a Mercury related to the second row passenger inflatable seatbelt deployment control circuit?
The common symptoms include the airbag warning light illuminating on the dashboard and a potential failure of the second row passenger inflatable seatbelt system.
2. What are the possible causes of OBDII code B141C in a Mercury?
The code B141C is typically caused by issues such as damaged wiring, faulty connectors, or a malfunctioning second row passenger inflatable seatbelt deployment control module.
3. How can I diagnose the OBDII code B141C in my Mercury?
Diagnosing the code B141C requires using a professional OBDII scanner to read the specific trouble code, checking the wiring and connectors for any visible damage, and testing the second row passenger inflatable seatbelt system components for proper functionality.
4. Can I still drive my Mercury with the OBDII code B141C present?
It is not recommended to drive the vehicle with the OBDII code B141C present, as it indicates a potential issue with the second row passenger inflatable seatbelt system, which is crucial for occupant safety in the event of a collision.
5. How can I repair OBDII code B141C in my Mercury?
Repairing the code B141C may involve repairing or replacing damaged wiring or connectors, resetting the airbag system, or replacing the faulty second row passenger inflatable seatbelt deployment control module.
6. Is it safe to reset the OBDII code B141C in my Mercury without addressing the underlying issue?
Resetting the code without addressing the underlying issue may temporarily turn off the warning light, but it will not fix the problem with the second row passenger inflatable seatbelt system, potentially compromising occupant safety.
7. Are there any recalls or technical service bulletins related to OBDII code B141C in Mercury vehicles?
It is recommended to check with your local Mercury dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to the OBDII code B141C in your specific vehicle model.
8. Can a DIY enthusiast repair OBDII code B141C in a Mercury, or is it best left to professionals?
While some basic diagnostic steps can be performed by DIY enthusiasts, repairing the OBDII code B141C, especially when it involves the airbag system, is best left to professionals with the necessary tools and expertise to ensure proper repair and safety.
9. How much does it typically cost to repair OBDII code B141C in a Mercury at a dealership or repair shop?
The cost of repairing the OBDII code B141C can vary depending on the specific issue, parts needed, labor costs, and the location of the repair. It is recommended to obtain quotes from different dealerships or repair shops for an accurate estimate.
10. How often should I have the second row passenger inflatable seatbelt system inspected in my Mercury to prevent OBDII code B141C from occurring?
It is recommended to have the second row passenger inflatable seatbelt system inspected during routine maintenance checks or whenever you notice any warning lights related to the airbag system to prevent potential issues and the occurrence of OBDII code B141C.
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