B00F3

Code

Generic B — Body

Second Row Center Inflatable Seat Belt Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 20 EN: 40 RU: 23

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Page language: EN

Causes

Open or shorted squib/deployment circuit for the second-row center inflatable seat belt
Poor or corroded connector, pin damage, or poor terminal contact at the inflatable belt harness or SRS module
Damaged wiring (chafing, pinched, broken conductors) between the SRS control module and the inflatable belt
Faulty inflatable seat belt assembly (inflator/squib internal fault)
Faulty Supplemental Restraint System (SRS) control/module or software error
Water/moisture intrusion or contamination at connector or module

Symptoms

SRS/airbag warning light illuminated on instrument cluster
Possible diagnostic trouble codes related to other seat belt/inflator circuits
Center second-row inflatable seat belt may not function or could be disabled
Occasional or permanent loss of SRS communication related to that circuit
Vehicle may disable certain restraint features until repaired

What to check

Read and record all SRS codes and freeze frame data with an OEM-capable scan tool
Visual inspection of seat belt assembly, connector, and wiring harness for damage, corrosion, or water intrusion
Check SRS module connector pins for bent, pushed-out, or corroded terminals
Verify battery voltage is within 11–14 V during tests
Check for related CAN-bus or communication DTCs
Inspect for signs of prior deployment or repairs to seat belt or nearby components

Signal parameters

SRS supply voltage: typically 11–14 V with ignition ON
Squib/inflator circuit resistance: expected low finite resistance (typical range 0.5–5 ohms for many inflators) — consult vehicle-specific data
Open circuit: infinite resistance (OL) between squib terminals indicates broken wiring or disconnected connector
Short-to-ground/short-to-battery: near 0 ohms or battery voltage present where not expected
CAN/SRS data: module present (alive) on bus and the inflatable belt channel reporting ready/fault status

Diagnostic algorithm

Safety first: disable the SRS system per manufacturer procedure (disconnect battery negative, wait required time, follow anti-static precautions). Consult vehicle-specific SRS service manual before any work.
Use a capable scan tool to read all SRS codes, note freeze-frame and event data, then attempt to clear codes and re-scan to confirm persistence of B00F3.
Perform a thorough visual inspection of the second-row center seat belt assembly, connector(s), and wiring harness routing under/behind trim panels for damage, moisture, or loose connectors.
With SRS disabled and connector disconnected, measure squib/inflator resistance at the seat belt harness connector and compare to manufacturer spec (expect a low, finite resistance). If infinite or very high, suspect open/inflator fault.
Check continuity between the SRS module deployment output pin and the seat belt connector pin with wiring harness pinned out; check for shorts to chassis ground and battery positive.
Inspect and back-probe the SRS module connector (with safety precautions and following OEM instructions) to verify module output wiring integrity and reference voltages. Do not attempt to fire the squib outside of manufacturer-controlled procedures.
If wiring and connectors are good, check for module and CAN-bus errors. Swap or re-flash the SRS module only per manufacturer guidelines if module fault is suspected.
Repair or replace damaged wiring, connectors, or the inflatable seat belt assembly as required. Replace any deployed inflator or compromised assembly rather than attempting repair.
After repairs, reconnect, re-enable SRS per procedures, clear codes, and perform SRS system self-tests and any required component learn or calibration procedures.
Confirm that the B00F3 code does not return and that the SRS warning light behaves normally during key cycles and self-tests.

Likely causes

Open circuit (infinite resistance) in squib wiring to the center seat belt
Low or out-of-spec resistance within the inflator/squib (internal short or open)
Corroded or bent pins at seat belt connector or SRS module connector
Previous deployment or damage to the inflator not replaced
Module fault in the SRS controller failing to drive the deployment output
Aftermarket equipment or previous repairs disturbing wiring or connector routing