Toyota-specific code — factory diagnostic data| DTC Data Sheet | |
| System | Body |
| Standard | Manufacturer Specific |
| Fault type | Open Circuit (FTB :13) |
| Official meaning | Second row left seat belt pretensioner deployment control circuit open |
| Definition source | Toyota factory description · Autel MaxiSys Ultra&EV |
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B007313 is a Toyota SRS code that records an open circuit in the second row left (rear left) seat belt pretensioner deployment control circuit. FTB :13 indicates the SRS module detected that the supervision current through the pretensioner squib loop has ceased — the circuit is open. On a collision-damaged vehicle with active deployment codes, this confirms the rear left seat belt pretensioner fired in the crash event. Like all pyrotechnic SRS components, the pretensioner is a single-use device. B007313 is a crash record that requires physical replacement of the rear left pretensioner assembly as part of a complete post-crash SRS repair.
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B007313 Quick Answer
B007313 on a Toyota means the SRS module recorded an open circuit in the second row left seat belt pretensioner squib loop. On a post-crash vehicle where P05BB00 “Restraints deployed” and multiple other SRS codes are present, this confirms the rear left pretensioner fired in the collision. The squib is consumed and the circuit is permanently open until the pretensioner assembly is replaced. The rear left seating position offers no seat belt pretensioner protection until the repair is complete.
What Does B007313 Mean?
The RAV4 PHV’s SRS system includes seat belt pretensioners not just for the front occupants but also for second row passengers, reflecting the vehicle’s family SUV design focus. The second row left pretensioner serves the rear left passenger seat. In a collision meeting the deployment threshold, this pretensioner fires to retract the rear left belt webbing, holding the rear occupant in position during the crash event and before any applicable side or curtain airbag deployment.
B007313 is stored when the SRS module’s supervision current monitoring detects the pretensioner squib loop has become an open circuit — infinite resistance, no current flow. FTB :13 identifies this as an open circuit fault. In the presence of P05BB00 and the other SRS deployment codes in this vehicle, the open circuit is the result of the squib firing and being consumed, not a pre-crash wiring fault. The code documents that the rear left pretensioner functioned correctly in the collision.
Theory of Operation
Second row pretensioners on the RAV4 PHV operate on the same principle as front pretensioners — a pyrotechnic gas generator drives a piston or spool rotation that retracts the seat belt webbing in a qualifying crash. The SRS module monitors the squib circuit via a continuous low-current supervision loop. When the module commands deployment, a firing current ignites the squib, consuming the resistive element and creating the open circuit that B007313 records.
Rear pretensioners typically have longer wiring runs than front pretensioners, routing from the SRS module through the B-pillar or under the rear floor carpet to the second row retractor. In a side impact or rollover event, this harness can suffer crush or chafe damage alongside the deployment event, which the SRS module may additionally record as circuit faults beyond the squib open. After deployment, the second row retractor is mechanically locked and the rear left belt cannot be used for occupant restraint.
Symptoms
- Rear left seat belt locked and retracted: The pretensioner has fired and the retractor is locked. The rear left belt webbing cannot be extended and the belt cannot be buckled normally.
- SRS warning light on: Illuminated continuously after any deployment event, across all seat positions.
- B007313 confirmed in SRS module: Logged at every key-on cycle until the pretensioner is replaced.
- Rear left seating position unsafe: An occupant in the rear left seat has no working seat belt pretensioner. The SRS system being fully disabled also means no side or curtain airbag protection.
- Multiple concurrent SRS codes: B002013, B002111, B002113, B007213, and P05BB00 indicate the full scope of the crash event deployment.
Rear Pretensioner Deployment — Why It Matters
Rear seat belt pretensioners are sometimes treated as lower priority than front airbags in post-crash repair planning. This is incorrect. A rear occupant who was present during the crash and whose pretensioner fired may have been held in position by the pretensioner activation at the critical moment of impact. With the pretensioner now locked and the belt non-functional, that rear seat position offers significantly reduced protection in any subsequent impact. Furthermore, if the vehicle is repaired and returned to service without replacing B007313’s pretensioner, a rear passenger in that seat has no effective restraint — the belt cannot be worn because the webbing is retracted and locked. This is a clear safety and legal liability issue.
Repair Requirements
- Second row left seat belt pretensioner assembly replacement: New OEM Toyota unit required. The pretensioner is typically integrated with the second row left retractor — the complete assembly is replaced.
- Rear harness inspection: The wiring running from the SRS module to the rear left pretensioner must be inspected for damage from the crash impact, particularly in the B-pillar lower section and under rear floor carpet where the harness is vulnerable.
- SRS airbag control module replacement: Required after any deployment event, regardless of which seat position’s components fired.
- All front deployed components: B002013, B002111, B002113, and B007213 indicate additional deployed components that must be replaced simultaneously.
- Seat belt webbing and buckle inspection: Inspect the rear left seat belt buckle for crash damage or load-limiter deployment. Replace if necessary.
- SRS recommissioning on Toyota Techstream: Confirm all squib circuits read within specification, no fault codes remain, and SRS warning light extinguishes after repair.
Can I Still Drive With B007313?
No. The rear left seat belt is locked and cannot be used. More critically, the entire SRS system across all seating positions is disabled. No occupant in any seat has airbag or pretensioner protection until the full SRS repair is completed. The vehicle must not be driven.
How Serious Is This Code?
Maximum severity. B007313 is part of a multi-code post-crash SRS deployment record covering both front and rear restraint components. The rear left seat cannot be occupied safely — the seat belt is non-functional. The vehicle has no SRS protection for any occupant until the complete repair is finished. This is among the most serious categories of automotive fault from a safety standpoint.
Common Misdiagnoses
Overlooking the rear pretensioner in a multi-component deployment repair is the most common error. Technicians focused on the more visible front airbag and curtain airbag damage can miss the rear pretensioner deployment, particularly if no rear occupant was in the vehicle at the time of the crash. The scan tool will always reveal B007313 if the rear pretensioner fired, regardless of whether a passenger was present. A second error is assuming the rear pretensioner is less safety-critical than front components — all deployed SRS components carry equal priority for replacement before the vehicle returns to service.
Most Likely Fix
Replacement of the second row left seat belt pretensioner and retractor assembly, inspection of the rear harness for crash-related damage, replacement of the SRS module, and replacement of all other deployed components indicated by concurrent SRS codes. Full SRS recommissioning is required before the vehicle is returned to service.
Repair Costs
| Repair Type | Estimated Cost |
|---|---|
| Second row left seat belt pretensioner assembly (OEM) | $180 – $450 |
| SRS airbag control module | $500 – $1,500 |
| Rear harness inspection / repair | $100 – $350 |
| SRS recommissioning labour | $150 – $300 |
| Full post-crash SRS repair (all components, this vehicle) | $3,000 – $7,000+ depending on collision damage extent |
Definition source: Toyota factory description. Diagnostic guidance is based on factory-defined fault logic for this code.
Key Takeaways
- B007313 FTB :13 records an open circuit in the second row left pretensioner squib — the squib fired in the crash and is permanently consumed until the assembly is replaced.
- The rear left seat belt is physically locked — no occupant can use this seat belt until the pretensioner assembly is replaced.
- Rear pretensioner replacement carries the same priority as front airbag replacement — all deployed components must be replaced before SRS recommissioning.
- The SRS module must be replaced after any deployment event across any seat position.
- Do not drive the vehicle — the SRS system is fully disabled across all seating positions until the complete repair is finished.
FAQ
Does B007313 mean a passenger was sitting in the rear left seat during the crash?
Not necessarily. Many SRS systems deploy seat belt pretensioners based on impact severity and the seat belt buckle sensor detecting whether the belt is engaged, not solely on whether a passenger is present. The SRS module may fire a rear pretensioner if the belt was buckled and impact severity met the threshold, even without a passenger in the seat. Regardless of whether a passenger was present, the pretensioner must be replaced.
Can the rear pretensioner be left unrepaired if no one sits in that seat?
No. A vehicle cannot be returned to roadworthy condition with an unfired SRS component in a seat that passengers may use. Additionally, the SRS warning light remains illuminated and the entire SRS system remains disabled until all fault codes are cleared — which requires all deployed components to be replaced and the system recommissioned. Leaving B007313 unrepaired prevents SRS recommissioning.
Is the second row left pretensioner the same part as the front pretensioner?
No. Front and rear pretensioners are different parts, sized and calibrated for their respective seat positions and belt geometry. The second row pretensioner is a separate OEM part number from the front units. Use the vehicle’s VIN and Toyota parts lookup to confirm the correct part number for the RAV4 PHV rear left position.
How is B007313 different from B007213?
B007213 covers the passenger front seat belt pretensioner “A” (front right seat). B007313 covers the second row left pretensioner (rear left seat). Both have FTB :13 (open circuit) indicating deployed squibs. They are separate components, separate circuits, and separate OEM part numbers — both must be replaced as part of this vehicle’s post-crash SRS repair.
What happens if I clear the codes and do not replace the pretensioner?
The codes will return at the next key-on cycle because the hardware fault — the open squib circuit — is still present. The SRS module tests all circuits at every key-on and will immediately re-log B007313. Additionally, clearing codes without completing repairs does not restore SRS function. The system remains disabled and the SRS warning light will return with the fault.