B00E8

Code

Generic B — Body

Third Row Center Seat Belt Pretensioner C Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 24 EN: 40 RU: 29

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Deployed pretensioner squib (actual deployment)
Open or short in pretensioner wiring or connector (corrosion, chafing, pin damage)
Faulty seat belt pretensioner assembly
Faulty SRS/reserve/airbag control module or driver electronics
Poor ground or battery voltage issues during self-test
Water intrusion or contamination at connector or harness

Symptoms

SRS/airbag warning lamp illuminated on dash
Possible additional SRS-related lamps or messages (seat belt, supplemental restraint messages)
Diagnostic trouble code B00E8 stored in SRS/BCM memory
Possible loss of pretensioner function for third-row center seat belt
In some cases, stored crash data or freeze-frame data present

What to check

Retrieve all SRS and related codes and freeze-frame data with an appropriate scan tool
Check vehicle history for prior crashes or airbag deployment events
Visually inspect third-row center seat belt pretensioner connector, harness, and mounting for damage, corrosion, or water ingress
Verify battery voltage and ground integrity at SRS module and relevant fuses/relays
Perform continuity and resistance check of pretensioner squib circuit (with safe SRS procedures)
Check for other SRS circuit codes that could indicate module or bus issues

Signal parameters

Expected pretensioner squib resistance (typical range): approx. 0.5–3.0 Ω (consult vehicle spec)
Open-circuit: infinite/OL resistance -> connector broken/open
Short-to-power: very low resistance or near 0 Ω with presence of battery voltage on circuit
Deployment event: recorded spike/current pulse in freeze-frame or crash data (requires scan tool)
Control module communication: CAN/SWC status OK with no bus errors

Diagnostic algorithm

Safety first: follow manufacturer SRS safety procedures. Disconnect battery and wait specified time before working on SRS components.
Connect an OEM-capable scan tool. Read and record all SRS codes, freeze-frame, and crash event data. Note related codes and history of deployments.
Inspect visually: third-row center pretensioner connector, wiring, and nearby harness for corrosion, damage, or water. Check mounts and seat anchorage areas.
Verify battery voltage and ground integrity at the SRS module and relevant fuses/relays. Repair any poor power/ground connections.
With battery disconnected and appropriate precautions, measure resistance of the pretensioner squib circuit at the connector and at the SRS module harness. Compare to OEM specification. Infinite resistance indicates open circuit; very low or near zero suggests short/deployed squib.
Wiggle test wiring while watching resistance/scan tool live data (with safe isolation) to find intermittent faults. Inspect for pin damage or pushed-out terminals inside connectors.
If resistance indicates deployment (low/short consistent with fired squib) or a short remains after repairs, replace the pretensioner assembly and any damaged wiring. If open, locate and repair open circuit, then re-measure.
If wiring and pretensioner check good, perform SRS control module self-tests and consider module replacement if it continues to report false deployment/control faults. Check for TSBs or manufacturer-specific recalibration procedures.
After repairs, clear codes and perform full SRS system checks with scan tool. Verify no additional codes and that SRS indicator goes out on key cycle.
If crash data is present, follow legal and safety requirements — many manufacturers require replacement of SRS modules and related components after deployment or recorded crash events.

Likely causes

Frontal or rear impact previously caused pretensioner deployment
Connector pins pushed out, corroded, or contaminated at third-row center seat belt pretensioner
Chafed wiring harness under seat or trim rub-through causing short to chassis or power
Failed pretensioner squib due to internal short/open from age or manufacturing defect
Faulty SRS control module reporting incorrect loop resistance

Fault status

⚠️ Status

SRS fault — third-row center seat belt pretensioner C deployment/control circuit abnormal. Possible deployed squib, open/short in circuit, connector or module fault. Diagnose and repair before vehicle use.

🔴 Repair difficulty: Hard

⏱️ Diagnostic time: 1.5-3.5 hours