B0083

Code

Generic B — Body

Second Row Left Seat Belt Load Limiter Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 20 EN: 34 RU: 26

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Previous deployment of the load limiter or pretensioner
Open or short in the seat belt load limiter/pretensioner wiring
Poor connector connection or corrosion at the seat wiring harness
Faulty second-row left seat belt load limiter/pretensioner assembly
Faulty SRS/airbag control module or internal driver circuit
Water intrusion or physical damage to seat wiring or connector

Symptoms

SRS / airbag warning lamp illuminated on instrument cluster
DTC B0083 stored in SRS control module memory
Possible seat belt warning or malfunction indicator
Passenger protection system may not function correctly for that seat (reduced occupant protection)
No other obvious electrical faults to the vehicle

What to check

Read and record all SRS fault codes and freeze frame data with an appropriate scan tool
Visually inspect second-row left seat, seat belt, and anchor area for signs of deployment, damage, or repairs
Inspect seat wiring harness and connectors for damage, corrosion, pin push-out or water intrusion
Check related fuses, relays and ground connections for the SRS system
Do not attempt an active fire test of the squib without manufacturer tools; follow safety procedures when working on SRS
If available, compare stored resistance values to known-good values or a vehicle-specific repair manual

Signal parameters

Expected resistance of an intact pretensioner/squib (typical range): approximately 0.8–3.5 ohms (varies by manufacturer)
Open or very high resistance (>>10 kohm) indicates an open/deployed circuit
Very low resistance (
During deployment the SRS module supplies a high-current firing pulse (do not attempt to reproduce without proper SRS firing tools)
Voltage at the squib connector with key on (no deployment): near battery voltage on supply side, control side will be monitored by module — follow manufacturer-specific values

Diagnostic algorithm

Record all SRS/airbag codes and freeze-frame data with a diagnostic scan tool.
Perform a full visual inspection of the second-row left seat, belt assembly, anchors, and wiring harness for physical damage or signs of deployment.
Verify battery voltage and relevant SRS fuses/grounds are good.
With the ignition off and proper safety measures (disconnect battery and wait recommended time per manufacturer), access the seat belt load limiter connector.
Measure resistance across the load limiter squib at the seat connector and at the module harness (compare both). If resistance is open or very high, suspect deployed or open circuit in seat assembly or connector.
If resistance is within expected range, inspect wiring continuity between the seat connector and SRS module for shorts to ground or open circuits; repair any damaged wiring.
If wiring and connectors are good but fault persists, substitute with a known-good seat assembly or bench-test squib per manufacturer procedure to isolate load limiter vs module.
If the squib is confirmed faulty, replace the second-row left seat belt load limiter/assembly and any damaged connectors, then clear codes and perform required SRS system checks/calibrations.
If squib and wiring are good, suspect SRS control module driver failure — consult manufacturer procedure for module testing and possible replacement.
After repair, reconnect battery, clear codes, and perform full SRS system self-test. Verify no new codes and restore vehicle to service.

Likely causes

Load limiter/pretensioner already deployed (open circuit)
Damaged or chafed wiring between seat and SRS module
Corroded or loose seat connector
Failed load limiter squib (internal short or open)
Faulty SRS control module output stage

Fault status

⚠️ Status

Fault in second-row left seat belt load limiter deployment control circuit — possible deployed or faulty pretensioner, wiring, connector, or SRS module issue.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0 - 3.0 hours