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Home >> Dodge and Ram >> 2021 >> 2500 HD Power Wagon >> Repair and Diagnosis >> Restraints >> Restraints Control Systems >> Restraints (Service Information) - 2500HD >> Sensor, Occupant Detection >> Removal And Installation

Removal And Installation

REMOVAL 

WARNING:

To avoid serious or fatal injury on vehicles equipped with airbags, disable the Supplemental Restraint System (SRS) before attempting any steering wheel, steering column, airbags, airbag curtains, knee blocker, seat belt tensioner, impact sensor or instrument panel component diagnosis or service. Disconnect the Intelligent Battery Sensor (IBS)/negative battery cable assembly from the negative battery post, then wait two minutes for the system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the SRS. Failure to take the proper precautions could result in accidental airbag deployment.

CAUTION:

When handling a new Occupant Detection Sensor (ODS), it should never be bent, creased, torn, cut or abraded. The ODS should not be handled with or come into contact with hard or sharp-edged tools or objects. Do not allow the ODS to drop more than 2 meters (6.5 feet). Prior to installation, do not sit on, stand on or place boxes, tools or any other foreign object on the ODS. Do not modify the seat foam or trim materials of a seat that contains an ODS. Failure to observe these cautions may result in an inoperative ODS, or an ODS that provides inaccurate inputs to the Occupant Restraint Controller (ORC).

GC0154622Courtesy of CHRYSLER GROUP, LLC
  1. Position the passenger side front seat to its most forward position for easiest access to the front seat mounting hardware.
  2. Disconnect and isolate the negative battery cable(s). Refer to BATTERY DISCONNECT AND CONNECT . Wait two minutes for the system capacitor to discharge before additional service.
  3. Remove the passenger side front seat from the vehicle. Refer to SEAT, FRONT, REMOVAL AND INSTALLATION .
  4. Remove the trim from the front seat cushion foam (1) and frame. Refer to COVER, SEAT CUSHION, FRONT, REMOVAL AND INSTALLATION .
  5. Reach under the back of the front seat cushion frame to access and disconnect the ODS (2) pigtail wire connector from the seat wire harness.
  6. Disengage the two adhesive patches of the ODS from the top surface of the seat cushion foam.
  7. Remove the ODS from the seat cushion.

INSTALLATION 

GC0154622Courtesy of CHRYSLER GROUP, LLC
  1. Mark the Center Line (CL) of the seat cushion on the top of the seat cushion foam (1).
  2. Measure and mark a transverse line (A) on the top of the seat cushion foam 185 millimeters (7.28 inches) rearward from the center of the forward crimp channel (trench) in the seat cushion foam.
    CAUTION:

    The adhesive used to secure the ODS to the seat is heat activated and requires that both the adhesive and the material it is applied to be ideally between 21° and 38° C (between 70° and 100° F). Application of the ODS to surfaces below 10° C (50° F) is not recommended as the adhesive becomes too firm to readily adhere. Do not touch or allow the adhesive patches to contact any foreign materials with the release paper removed. Do not attempt to add adhesive materials to the ODS.

  3. Peel the release paper from the two adhesive patches on the underside of the ODS mat.
  4. Carefully position the ODS to the seat cushion with the label between the branches containing the circular sensor cells centered on the marked seat cushion center line and aligned with the transverse line behind the forward crimp channel.
  5. Apply hand pressure (0.8 bar or 12 psi) over each of the two adhesive patches of the ODS for at least four seconds to activate and adhere the adhesive to the seat cushion foam.
  6. Route the ODS pigtail wires that exit the back of the hot melt block through the recess at the back of the seat cushion foam.
  7. Reach under the back of the front seat cushion frame to access and connect the ODS pigtail wire connector to the seat wire harness.
  8. Install the trim to the front seat cushion foam and frame. Refer to COVER, SEAT CUSHION, FRONT, REMOVAL AND INSTALLATION .
  9. Install the passenger side front seat into the vehicle. Refer to SEAT, FRONT, REMOVAL AND INSTALLATION .
  10. Connect the negative battery cable(s). Refer to BATTERY DISCONNECT AND CONNECT .