B00E0

Code

Generic B — Body

Third Row Left Seat Belt Pretensioner B Deployment Control

Brand: Generic

Type: B — Body

Views: UK: 36 EN: 38 RU: 37

AI status

Completed

ready

Completed 100%

Page language: EN

Causes

Open or short in pretensioner wiring/circuit
Faulty third-row left seat belt pretensioner squib
Poor or corroded connector at pretensioner or SRS module
Blown SRS fuse or failed SRS relay
Stored crash/deployment event or past airbag deployment
Faulty SRS control module or internal driver electronics

Symptoms

SRS / airbag warning lamp ON
Possible disablement of other SRS components or restraint features
Fault stored in SRS control module memory
Inability to clear code until root cause repaired
Possible intermittent warning if wiring is chafed or loose

What to check

Read SRS codes and freeze frame data with an appropriate scan tool
Check for additional SRS or crash data (deployment history)
Visually inspect third-row left seat, pretensioner connector, and harness
Inspect SRS fuses and relays and check battery voltage
Measure squib circuit resistance per manufacturer specs
Check for continuity and for short to ground or battery supply

Signal parameters

Pretensioner (squib) resistance: typically a low-ohm value when intact (manufacturer-specific; commonly ~0.5–3 ohms).
Open circuit will show very high or infinite resistance.
A short to ground or battery may show near-zero ohms or a low unexpected reading.
SRS module supply voltage should be stable (battery voltage while key on).
Current draw during deployment circuit test will be controlled by the module (do not attempt live deployment tests without proper tools and procedures).

Diagnostic algorithm

Read and record the exact trouble code(s) and freeze frame data with an SRS-capable scan tool; retrieve any crash/event flags.
Follow manufacturer SRS safety procedures: disable SRS power (battery disconnect or module sleep) and wait the specified time before servicing connectors or wiring.
Perform a visual inspection of the third-row left seat, pretensioner connector, and wiring for damage, corrosion, pin push-out, or aftermarket modifications.
Inspect related SRS fuses and relays; verify battery voltage and ground integrity.
With SRS power disabled per procedure, measure resistance across the pretensioner squib circuit and compare to manufacturer specification. Note open/infinite or out-of-spec values.
Check continuity from the pretensioner connector back to the SRS module; look for short circuits to ground or battery (insulation damage, chafed wires).
If wiring and connector are good but resistance is out of range, replace the pretensioner assembly and recheck resistance and connector fit.
Re-enable SRS power, clear codes with the scan tool, and perform system self-tests. Confirm code does not return. If code returns, inspect/replace SRS control module or pursue module-level diagnostics per manufacturer.
If component replacement occurs, perform any required SRS calibration or module programming and verify system readiness.
Always document repairs and, if there was a deployment or crash event, follow required vehicle reporting/repair procedures.

Likely causes

Broken/disconnected connector at the third-row left pretensioner
Low/high resistance in squib (wire short to ground or power)
Deployed or mechanically damaged pretensioner (open circuit)
Corroded terminals or water ingress in seat harness
SRS module detecting implausible voltage or current during self-test
Aftermarket seat or wiring modifications affecting the squib circuit

Fault status

⚠️ Status

SRS control module detected a fault in Third Row Left Seat Belt Pretensioner B deployment circuit (open/short/high resistance or deployment detected).

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 1.0-2.5 hours