B007C

Code

Generic B — Body

Second Row Right Seat Belt Pretensioner B Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 24 EN: 32 RU: 22

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Page language: EN

Causes

Open or shorted pretensioner (squib) wiring or connector
Corroded, loose, or disconnected pretensioner connector
Failed pretensioner (squib) element
Faulty airbag/occupant restraint control module or pretensioner driver
Previous crash damage or improper repair (deployed or cut wiring)
Poor battery/ground or low system voltage during self-test

Symptoms

SRS / airbag warning lamp illuminated or flashing
Stored fault code B007C in airbag/RCM module
Possible disablement of pretensioner firing for that seat
Related safety systems may be inhibited or show faults (e.g., seat belt reminder)
No obvious mechanical symptom until deployment is required

What to check

Read SRS/airbag module for B007C and any additional codes; record freeze-frame data
Visually inspect the second-row right seat belt pretensioner, routing, and connectors for damage, corrosion, or loose connections
Verify battery voltage and ground condition; ensure good supply during diagnostics
Check for signs of prior deployment or crash repair in the seat/cowl area
Measure pretensioner circuit resistance with SRS power disabled (see safety notes)
Perform wiring continuity and short-to-ground/short-to-voltage checks between pretensioner connector and restraint control module

Signal parameters

Typical squib (pretensioner) resistance: generally low (often roughly 0.5–5 ohms). Consult OEM spec for exact value.
Open-circuit reading: OL/infinite (indicates open wiring or disconnected squib).
Short-to-ground/short-to-VCC: near 0 ohms (indicates short in circuit or internal short in squib).
Diagnostic firing: controlled high-current pulse from restraint module only during specific test/activation conditions (do not attempt to fire).
Module communications: CAN/serial status flags reporting channel fault (if available from scan tool)

Diagnostic algorithm

Safety first: Disable vehicle battery per manufacturer procedure and wait the required time for the SRS capacitors to discharge before touching SRS components or connectors.
Connect a capable scan tool and read airbag/RCM faults and freeze frame. Note any other related codes and history.
Perform a careful visual inspection of the second-row right seat, buckle, pretensioner assembly, and harness routing for damage, water intrusion, or signs of prior deployment.
With battery disabled and following safety procedure, disconnect the pretensioner connector and measure squib resistance at the connector pins. Compare to OEM spec. An open or out-of-spec reading indicates squib or wiring fault.
Check continuity from the pretensioner connector to the restraint control module connector. Repair any opens. Also check for shorts to ground or battery voltage.
Inspect and clean connector terminals; repair or replace corroded pins or harness clips as needed.
If wiring and connector are good but resistance is abnormal, replace the pretensioner assembly (and buckle/anchor if integrated).
If pretensioner and wiring test good, suspect restraint control module driver fault—verify other channels and module operation. Replace or reprogram module only after confirming wiring and squib integrity.
After repairs, clear codes, reconnect battery, and run SRS system checks with a scan tool. Confirm no new codes and that the airbag warning lamp behavior is normal.
If code returns or diagnosis is unclear, consult OEM service information for channel-specific test procedures and consider dealer-level diagnostic tools.