Engine-Codes - Ford - B13B3 FORD

B13B3 FORD - Second Row Left Inflatable Seatbelt Deployment Control Circuit

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

B13B3 FORD Possible Causes

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

How is the B13B3 FORD 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

B13B3:11 Second Row Left Inflatable Seatbelt Deployment Control Circuit Short to Ground
B13B3:12 Second Row Left Inflatable Seatbelt Deployment Control Circuit Short to Battery
B13B3:13 Second Row Left Inflatable Seatbelt Deployment Control Circuit Open
B13B3:1A Second Row Left Inflatable Seatbelt Deployment Control Circuit Resistance Below Threshold

What is the cost to diagnose the B13B3 FORD code

Labor: 1.0

The cost to diagnose the B13B3 FORD 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

B13B3 FORD Meaning

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.

More Information

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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.