Engine-Codes -
Mercury -
B141B MERCURY
B141B MERCURY - Second Row Driver Inflatable Seatbelt Deployment Control Circuit
Table of contents
B141B MERCURY Possible Causes
- 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 is the B141B MERCURY code repair?
Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.Tech Notes
B141B:11 Second Row Driver Inflatable Seatbelt Deployment Control Circuit Short to GroundB141B: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 B141B MERCURY code
Labor: 1.0
The cost to diagnose the B141B MERCURY code is 1.0 hour of labor. The auto repair labor rates vary widely across the country, and even within the same city. Most auto repairs shops charge between $75 and $150 per hour.
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Possible Symptoms
- Air Bag Warning Light ON
B141B MERCURY Meaning
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. If a fault is detected, the RCM stores DTC B141B in memory and sends a message to the Instrument Panel Cluster (IPC) to illuminate the airbag warning indicator.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.
More Information
Need more information on how to fix the B141B MERCURY code?Get Access to Factory Service Manuals
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Get the B141b Mercury code diagnosed by a professional: Find a repair shop in your areaPrecautions 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.