B007F

Code

Generic B — Body

Passenger Seat Belt Pretensioner C Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 29 EN: 75 RU: 42

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Pretensioner has deployed (pyrotechnic discharge)
Open circuit in pretensioner squib or harness (broken wire, connector unplugged)
Short to ground or to battery voltage in the pretensioner circuit
Corroded or loose connector at pretensioner or SRS module
Water/moisture intrusion into connector or seat area
Faulty airbag/SRS control module or driver electronics

Symptoms

Airbag/SRS warning lamp illuminated or flashing on dash
Passenger seat belt pretensioner no longer functions (post-accident)
Diagnostic trouble code stored for passenger pretensioner
Possible loss of passenger pretensioner deployment protection
Possible seatbelt warning lamp or occupant classification-related warnings

What to check

Read and record all SRS/Airbag codes and freeze frame data with a proper scan tool
Check battery voltage and charging system before diagnostics (low voltage can cause false codes)
Visually inspect passenger seat belt pretensioner area and surrounding trim for signs of deployment (burn, deformation, residue)
Inspect connectors under the passenger seat and at the pretensioner for corrosion, damage, or looseness
Inspect wiring harness routing for pinched, cut, or chafed wires along seat rails and floor
Check for water intrusion or dampness around seat wiring and connectors

Signal parameters

Squib (pretensioner) coil expected to be a low-resistance load when intact (typically low ohms); an open circuit often indicates deployment or broken wire
SRS control module monitors continuity and may detect short-to-ground or short-to-battery conditions
Pretensioner firing is a high-current pulse controlled by the airbag module — do not attempt to activate
When deployed the circuit will usually show loss of continuity (open); however exact behavior depends on manufacturer design

Diagnostic algorithm

Use a capable scan tool to read all SRS-related codes and note any additional airbag/seat occupancy codes. Do not ignore related codes.
Ensure vehicle battery is fully charged. Low voltage can cause misleading SRS faults.
Visually inspect the passenger pretensioner, seat, and trim for signs of deployment or damage. If deployment is evident, replace the pretensioner and inspect for other crash damage.
With the ignition OFF and following the manufacturer's specified SRS disable procedure (disconnect battery and wait required time or use approved tooling), access the pretensioner connector and inspect pins for corrosion, bent pins, or water contamination.
Measure continuity/resistance of the pretensioner squib circuit between the pretensioner connector and the SRS module connector. Compare to manufacturer specification. If open or out-of-spec, trace and repair wiring/connectors.
Perform wiggle tests on the harness while monitoring continuity to find intermittent faults; inspect wiring near seat rails where movement occurs.
Check for shorts to ground or battery by measuring resistance to chassis and to battery positive with power removed (follow safety procedures).
Inspect and test the SRS control module connectors and grounds. If wiring and pretensioner test good but the code persists, consider module fault and consult manufacturer procedures for module testing/replacement and SRS system reset.
After corrective action, clear codes with a scan tool and perform required system tests (including occupant detection/seat sensor checks if applicable). Verify airbag warning lamp goes out and code does not return.
If unsure or if deployment is suspected, have repairs performed by a qualified technician or authorized repair facility. Follow all safety and disposal rules for deployed pyrotechnic devices.

Likely causes

Pretensioner already fired during a prior event (intentional or crash) and circuit is now open
Connector under passenger seat is loose, damaged, or corroded
Wire harness under seat pinched or cut by seat rails causing open or short
Short circuit due to insulation damage or water ingress
SRS control module internal driver or detection circuit failure

Fault status

⚠️ Status

Passenger seat belt pretensioner C deployment/control circuit fault detected. Possible deployed pretensioner, open or short in wiring, connector fault, or SRS module driver error.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-3.0 hours