Occupant Classification Sensor: Installation

WARNING: This page is about a different car, the 2010 Ford Mustang. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Install a new occupant classification sensor (OCS) system service kit as a complete assembly. Never install only part of the kit components. Failure to follow this instruction may result in incorrect operation of the OCS system and increases the risk of serious personal injury or death in a crash.

WARNING: Make sure the front passenger seat repair is complete, the seat and all attached components (head restraint, seat side shield, etc.) are correctly assembled, and the seat is correctly installed to the vehicle before carrying out the System Reset. Failure to follow these instructions may result in incorrect operation of the occupant classification sensor (OCS) system and increases the risk of serious personal injury or death in a crash.

NOTE: Failure to correctly route the Occupant Classification Sensor (OCS) system components may cause component failure and incorrect operation of the OCS .

Position the OCS system components on the seat cushion frame as noted during removal.
- Feed the hose, pressure sensor, wire harness, electrical connector and OCSM into the opening in the seat cushion frame.
- For a production OCS system , install the bladder and 2 pin-type retainers to the seat cushion frame.
  
  Fig 1: Locating Feed Hose, Pressure Sensor, Wire Harness, Electrical Connector And OCSM
  Courtesy of FORD MOTOR CO.
Position the OCSM in the bracket and install new rivets.
- For a production OCS system , connect the OCSM electrical connector to the seat wiring harness.
  
  Fig 2: Locating OCSM And Rivets
  Courtesy of FORD MOTOR CO.
Bend the tab back on the bracket.

Fig 3: Bending Tab Back On Bracket
Courtesy of FORD MOTOR CO.
Install the pressure sensor onto the bracket, making sure the tab is completely engaged.
- For a production OCS system , connect the pressure sensor electrical connector to the seat wiring harness.
  
  Fig 4: Connecting Pressure Sensor Electrical Connector To Seat Wiring Harness
  Courtesy of FORD MOTOR CO.
Tie-strap all loose wire harnesses and electrical connectors safely aside.
Position the seat cushion cover on the seat cushion foam pad and install the hog rings.
Attach all J-clips to the seat cushion frame.
Install the seat track. For additional information, refer to SEATING .
Install the seat backrest. For additional information, refer to SEATING .
Install the seat. For additional information, refer to SEATING .
Repower the SRS . For additional information, refer to SUPPLEMENTAL RESTRAINT SYSTEM (SRS) DEPOWERING AND REPOWERING in the General Procedures portion of this section.
Make sure no OCSM DTCs are present. If DTC C1941 has been stored in OCSM memory, it will clear upon a successful system reset. All other OCS system DTCs must be diagnosed and repaired before carrying out the OCS system reset.

NOTE: To prevent system failure, the following precautions must be taken before carrying out the Occupant Classification Sensor (OCS) system reset:

Make sure the voltage to the Occupant Classification System Module (OCSM) is above 8 volts and less than 18 volts.
Make sure the OCS system is not at a temperature below 6°C (42°F) or above 36°C (97°F) when initiating the OCS system reset. If the vehicle has been exposed to extreme cold or hot temperatures, the vehicle must be exposed and kept at a temperature within the limits, 6°C to 36°C (42°F to 97°F) for a minimum of 30 minutes.
Make sure nothing is present on the passenger seat before carrying out the OCS system reset and nothing is placed on the seat during the process.
Make sure a minimum 8-second time period has passed after cycling the ignition ON before carrying out the OCS system reset.

Carry out the OCS system reset.
If the first system reset attempt was unsuccessful, carry out a thorough inspection of the following and repair any concerns found.
- OCS system connector and wiring for damage
- Pressure sensor hose for kinks and/or damage
- Seat-related wiring harness and body wiring harness terminals and connectors for damage
Carry out a second OCS system reset. If unsuccessful, install a new OCS system service kit.
Prove out the SRS as follows:
Turn the ignition from ON to OFF. Wait 10 seconds, then turn the ignition ON and monitor the air bag warning indicator with the air bag modules installed. The air bag warning indicator will light continuously for approximately 6 seconds and then turn off. If an air bag SRS fault is detected, the air bag warning indicator will:
- fail to light.
- remain lit continuously.
- flash.
The flashing might not occur until approximately 30 seconds after the ignition has been turned from the OFF to the ON position. This is the time required to complete testing of the SRS . If the air bag warning indicator is inoperative and a SRS fault exists, a chime will sound in a pattern of 5 sets of 5 beeps. If this occurs, the air bag warning indicator and any SRS fault discovered must be diagnosed and repaired.

Clear all RCM and OCSM Continuous Memory Diagnostic Trouble Codes (CMDTCs).

NOTE: A prepaid return postcard is provided with a new OCS system service kit. The serial number for the new part and the Vehicle Identification Number (VIN) must be recorded and sent to Ford Motor Company.

If a new OCS system service kit was installed, fill out the necessary information on the OCS system traceability card and return it along with the complete inoperative OCS system to Ford Motor Company.
- When returning the inoperative OCS system, include: foam pad, bladder, OCSM , pressure sensor, hose, electrical connectors and wire harness (OCS system service kit OCS only).