B007D
Second Row Center Seat Belt Pretensioner B Deployment Control.
- Generic
- Body
- Generic code
- High severity
How this code is built
- B
- SystemBody
- 0
- Defined bySAE, the same on every car
- 0
- AreaBody area 0
- 7D
- FaultThe specific fault in that area
What it means
B007D is a generic body code relating to the second row centre seat belt pretensioner, specifically the 'B' deployment control circuit. The restraints control module monitors the squib circuit that fires the pretensioner and sets the code when it sees a fault such as an abnormal resistance, open circuit, short or a control fault. The exact wording and which circuit is covered can vary by manufacturer and model, so check the vehicle-specific data.
Symptoms
- SRS or airbag warning light on the dash
- Seat belt warning light staying on or flashing
- Rear centre seat belt pretensioner may not fire in a crash because the system disables it
- Restraint system self-test fails at start-up
- Rear centre belt feels damaged, loose or does not retract properly
Possible causes
- Damaged, corroded or loose connector at the rear centre seat belt pretensioner or its yellow SRS connectorlikely
- Wiring fault in the pretensioner circuit, such as an open circuit, chafing or a short to ground or voltage, often after seat or trim worklikely
- Faulty or previously deployed seat belt pretensioner with out-of-range squib resistancepossible
- Incorrectly refitted rear seat, seat belt or trim that has trapped or stretched the harnesspossible
- Water ingress or corrosion in the rear floor or seat area affecting the harness or connectorspossible
- Fault inside the restraints control modulerare
How to diagnose
- Read all stored SRS codes and freeze frame data, noting whether the fault is current or history and whether other restraint codes are present.
- Check for recent work or crash history in the rear seat area, and look for signs of deployment or damage to the rear centre belt.
- Visually inspect the rear centre pretensioner connector and the harness for damage, corrosion, moisture, trapped wiring or loose pins, with the battery disconnected and the correct SRS safety wait observed.
- Check the connector locking and shorting clips are intact and fully seated.
- Using the manufacturer's procedure, measure the circuit resistance and check for shorts to ground or voltage at the harness, never probing the squib directly with a normal test meter.
- Compare the squib circuit reading against the model-specific specification to separate a harness fault from a faulty pretensioner.
- Clear the code after repair and confirm it does not return after a restraint system self-test.
How to fix
- Repair or replace damaged wiring, terminals or connectors in the pretensioner circuit following the manufacturer's SRS repair guidance.
- Refit the connector securely and correct any trapped or stretched harness routing.
- Replace the faulty or deployed rear centre seat belt pretensioner or belt assembly.
- Dry out and treat water ingress, and repair the source of the leak.
- Replace the restraints control module only if testing confirms an internal fault, then carry out any required coding or setup per the manufacturer.
Can I keep driving?
The car can be driven short distances, but the rear centre pretensioner may not work in a collision, so book the repair promptly and avoid carrying a passenger in that seat until it is fixed. Only trained people should work on SRS components because of the risk of accidental deployment.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.