AutoCodes – Generic – B13B7

B13B7 Code - Second Row Right Inflatable Seatbelt Deployment Control Circuit

Quick Answer

The Restraints Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. Common causes include Faulty Second Row Right Inflatable Seatbelt, Second Row Right Inflatable Seatbelt harness is open or shorted, Second Row Right 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: B13B7 indicates Second Row Right Inflatable Seatbelt Deployment Control Circuit.
Common causes: Common causes include Faulty Second Row Right Inflatable Seatbelt, Second Row Right Inflatable Seatbelt harness is open or shorted, Second Row Right 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.

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Code Popularity 722

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 21, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B13B7 Description

The Restraints Control Module (RCM) analyzes the deployment loop resistance to determine if a fault exists. The value displayed in the Parameter Identification (PID) is the deployment loop resistance measured by the Restraints Control Module (RCM). If the value displayed is lower or higher than the desired range, the Restraints Control Module (RCM) can set a Diagnostic Trouble Code (DTC). As the deployment loop resistance drifts farther outside the desired range, the chance for a Diagnostic Trouble Code (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 Parameter Identification (PID) value to be within the desired range before the fault is considered repaired, regardless if the module is reporting an on-demand Diagnostic Trouble Code (DTC) at the time of diagnosis. Following this direction helps make sure that minor changes in resistance do not create a repeat concern.

OBDII Code B13B7 - Second Row Right Inflatable Seatbelt Deployment Control Circuit - AutoCodes.com — B13B7 Code - Second Row Right Inflatable Seatbelt Deployment Control Circuit

What does this mean?

What are the Possible Causes of the DTC B13B7?

Faulty Second Row Right Inflatable Seatbelt
Second Row Right Inflatable Seatbelt harness is open or shorted
Second Row Right Inflatable Seatbelt circuit poor electrical connection
Faulty Restraints Control Module (RCM)

How to Fix the DTC B13B7?

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 does this mean?

Code Tech Notes

B13B7:11 Second Row Right Inflatable Seatbelt Deployment Control Circuit Short to Ground
B13B7:12 Second Row Right Inflatable Seatbelt Deployment Control Circuit Short to Battery
B13B7:13 Second Row Right Inflatable Seatbelt Deployment Control Circuit Open
B13B7:1A Second Row Right Inflatable Seatbelt Deployment Control Circuit Resistance Below Threshold

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B13B7 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.

Need more information about the B13B7 code?

Need more information on how to fix the B13B7 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B13B7 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B13B7 Ford — Second Row Right Inflatable Seatbelt Deployment Control Circuit
B13B7 Lincoln — Second Row Right Inflatable Seatbelt Deployment Control Circuit
B13B7 Mercury — Second Row Right Inflatable Seatbelt Deployment Control 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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B13B7 Code

1. What does the OBDII code B13B7 mean?

B13B7 indicates an issue with the second-row right inflatable seatbelt deployment control circuit, which is part of the vehicle's supplemental restraint system (SRS).

2. What are the symptoms of code B13B7?

Common symptoms include the airbag warning light illuminated on the dashboard and possible inoperability of the second-row right inflatable seatbelt system.

3. What causes the B13B7 code to appear?

Possible causes include damaged wiring or connectors in the seatbelt circuit, a faulty inflatable seatbelt module, or a malfunctioning SRS control unit.

4. Is it safe to drive with the B13B7 code active?

Driving with the B13B7 code active is not recommended, as it may compromise the proper functioning of your vehicle's airbag and seatbelt systems in the event of a collision.

5. How is the B13B7 code diagnosed?

A technician will use a scan tool to confirm the code, inspect the wiring and connectors for damage, and test the inflatable seatbelt module and SRS control unit for faults.

6. Can I fix the B13B7 code myself?

You may be able to repair the code if the issue is caused by simple wiring or connector problems, but more complex issues like a faulty module should be handled by a professional.

7. How much does it cost to repair the B13B7 code?

Repair costs vary but typically range from $100 to $500 depending on whether wiring repairs, module replacement, or additional diagnostics are needed.

8. Does clearing the B13B7 code solve the problem?

Clearing the code without addressing the underlying issue will not resolve the problem, and the fault will likely reappear.

9. Can a dead battery cause the B13B7 code?

A dead or weak battery can sometimes cause communication errors in the SRS system, but the code is more likely due to a specific circuit or module issue.

10. What tools are needed to troubleshoot the B13B7 code?

Troubleshooting requires an OBDII scanner, a multimeter for testing electrical connections, and potentially specialized tools for accessing the seatbelt system components.