B141B Mercury Code - Second Row Driver Inflatable Seatbelt Deployment Control Circuit
Quick Answer
The Restraint Control Module (RCM) continuously monitors the second row left safety belt inflator and circuits for the following faults: Resistance out of range, Unexpected voltage, Short to ground, Faulted second row left safety belt inflator. Common causes include Faulty Second Row Driver Inflatable Seatbelt, Second Row Driver Inflatable Seatbelt harness is open or shorted, Second Row Driver 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
- B141B Mercury indicates Second Row Driver Inflatable Seatbelt Deployment Control Circuit.
- Common causes
- Common causes include Faulty Second Row Driver Inflatable Seatbelt, Second Row Driver Inflatable Seatbelt harness is open or shorted, Second Row Driver 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 B141B 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 B141B Mercury?
- Faulty Second Row Driver Inflatable Seatbelt
- Second Row Driver Inflatable Seatbelt harness is open or shorted
- Second Row Driver Inflatable Seatbelt circuit poor electrical connection
- Faulty Restraint Control Module (RCM)
How to Fix the DTC B141B 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
B141B:12 Second Row Driver Inflatable Seatbelt Deployment Control Circuit Short to Battery
B141B:13 Second Row Driver Inflatable Seatbelt Deployment Control Circuit Open
B141B:1A Second Row Driver Inflatable Seatbelt Deployment Control Circuit Resistance Below Threshold
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B141B 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 B141B Mercury Code
1. What are common symptoms of OBDII code B141B in a Mercury related to the Second Row Driver Inflatable Seatbelt Deployment Control Circuit?
- Common symptoms may include the airbag warning light being illuminated on the dashboard and potential issues with the second-row driver inflatable seatbelt deployment system.
2. What are some possible causes of OBDII code B141B in a Mercury?
- Possible causes may include a malfunctioning inflatable seatbelt control module, wiring problems, or a faulty seatbelt pretensioner.
3. How can I diagnose the issue related to OBDII code B141B in my Mercury?
- Diagnosing the issue may require using an OBDII scanner to retrieve the specific fault code, followed by inspecting the inflatable seatbelt components, wiring, and control module for any visible damage or issues.
4. Can I still drive my Mercury with the OBDII code B141B present?
- It is not recommended to drive the vehicle with any airbag-related fault codes present, as it may compromise the safety systems in the event of a collision.
5. How can I repair OBDII code B141B in my Mercury?
- Repairing the issue may involve replacing the faulty inflatable seatbelt control module, repairing damaged wiring, or addressing any other underlying problems identified during diagnosis.
6. Is it safe to reset the OBDII code B141B in my Mercury using a scanner?
- While you can reset the code using a scanner, it is crucial to address the underlying issue causing the fault code to prevent further safety risks.
7. Are there any recalls or technical service bulletins related to OBDII code B141B 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 this specific OBDII code.
8. How much does it typically cost to repair OBDII code B141B in a Mercury at a dealership or repair shop?
- Repair costs can vary depending on the exact cause of the issue, but it is advisable to obtain quotes from different repair facilities to compare prices and services.
9. Can a DIY enthusiast with automotive experience fix OBDII code B141B in a Mercury?
- Depending on the individual's skill level and access to tools, a DIY enthusiast may be able to address the issue themselves by following repair guides or consulting with experts for guidance.
10. How often should I have the inflatable seatbelt system in my Mercury inspected to prevent OBDII code B141B from occurring?
- It is recommended to have the inflatable seatbelt system inspected during regular vehicle maintenance checks or whenever you notice any unusual symptoms related to the airbag system to prevent issues like OBDII code B141B.
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