This is what I could find in my dvd manual for the '11. I hope this helps
Safety Belt Retractors
The safety belt retractors consist of the following features:
- Safety belt pretensioner (front only)
- Dual locking mode
- Emergency Locking Retractor (ELR)
- Automatic Locking Retractor (ALR) (all except driver seat)
- Belt Tension Sensor (BTS) (front passenger safety belt retractor only)
Safety Belt Retractor and Pretensioner
The pretensioner is a pyrotechnic device that deploys when activated by the Restraints Control Module (RCM) to remove excess safety belt webbing from the shoulder and lap safety belt in the event of an impact. If a deployment of the safety belt retractor and pretensioners occurs, a new assembly must be installed. Refer to
Safety Belt Retractor and Pretensioner in this section.
Each front safety belt shoulder guide includes a 2-position safety belt presenter arm (coupe only) that rotates rearward to allow for occupant rear seat access (stowed position) and forward for front seat occupant use (worn position).
For safety belt retractor and pretensioner diagnostic and disposal information, refer to
Section 501-20B .
Emergency Locking Retractor (ELR)
Every safety belt retractor is a 3-point restraint with the ELR feature. The safety belt retractor is designed to allow the occupant freedom of movement in normal operation. The ELR is a vehicle sensitive feature designed to activate and lock the safety belt webbing when braking hard, cornering hard or in an impact of approximately 8 km/h (5 mph). The ELR feature helps to reduce the forward movement of the driver and passengers. Refer to the appropriate Functional Test procedure in
Safety Belt System in this section.
Automatic Locking Retractor (ALR)
The ALR feature does not allow freedom of movement. The ALR mode is used when locking a child seat in an outboard seating position or when a tight belt fit is desired. The ALR mode is automatically activated when the safety belt webbing is fully extracted from the retractor and then allowed to retract. As the safety belt webbing is retracted back onto the spool, an audible clicking sound is made indicating the safety belt retractor is in ALR mode and the safety belt webbing will not pull back out of the safety belt retractor. To disengage the ALR mode, allow the safety belt webbing to fully retract back onto the spool. The ALR mode is disengaged when the webbing is free to extract and retract back into the retractor. Refer to the appropriate Functional Test procedure in
Safety Belt System in this section.
Belt Tension Sensor (BTS)
The safety BTS is part of the passenger front outboard safety belt and retractor assembly and is not serviced separately. The safety BTS is located at the safety belt anchor point and operates as part of the Occupant Classification Sensor (OCS) system on the front passenger seat. To diagnose the BTS or OCS system, refer to
Section 501-20B .