Pacifica 2006-2008

Tire Pressure Monitor

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Precautions




WARNING
The Tire Pressure Monitoring (TPM) system has been optimized for the original equipment tires and wheels. TPM system pressures have been established for the tire size equipped on the vehicle. Undesirable system operation or sensor damage may result when using replacement equipment that is not of the same size, type, or style. Aftermarket wheels can cause sensor damage. Do not use aftermarket tire sealants or balance beads if your vehicle is equipped with TPM, as damage to the sensors may result.


WARNING
Do not attempt to install a tire pressure sensor in an aftermarket wheel. Use tire pressure sensors in original style factory wheels only. If aftermarket wheels are installed, and therefore do not contain tire pressure sensors, the system will not function properly and the driver will be continuously notified of a system malfunction.


WARNING
After inspecting or adjusting the tire pressure always reinstall the valve stem cap. This will prevent moisture and dirt from entering the valve stem, which could damage the Tire Pressure Sensor.


WARNING
Tire pressure sensor valve stem caps and cores are specially designed for the sensors. Due to risk of corrosion, do not use a standard valve stem cap or core in a tire pressure sensor in place of the original equipment style sensor cap and core.


WARNING
When installing the valve core, be sure to tighten the core to specifications. Overtightening by a little as three or four inch pounds can damage the sensor.

Removal & Installation



Sensor
  1. Raise and support vehicle.
  2.  
  3. Remove wheel mounting nuts, then tire and wheel assembly.
    NOTE
    The cap used on this valve stem contains an O-ring seal to prevent contamination and moisture from entering the valve stem. Retain this valve stem cap for reuse. Do not substitute a regular valve stem cap in its place.


    WARNING
    The valve stem used on this vehicle is made of aluminum and the core is nickel plated brass. The original valve stem core must be reinstalled and not substituted with a valve stem core made of a different material. This is required to prevent corrosion in the valve stem caused by the different metals.

  4.  
  5. Dismount tire from wheel following tire changer manufacturers instructions while paying special attention to the following to avoid damaging the pressure sensor:

    When breaking the tire bead loose from the wheel rim, avoid using the Bead Breaker in the area of the sensor. That includes both front and rear beads of the tire.
     
    When preparing to dismount the tire from the wheel, carefully insert the mounting/dismounting tool at the valve stem ± 10°, then proceed to dismount the tire from the wheel. Use this process on both the upper and lower tire beads.

    Click image to see an enlarged view

    Fig. Start mount/dismount tool within 10 degrees of valve stem

     

  6.  
  7. Remove sensor nut retaining sensor to wheel. While removing nut, hold pressure against rear of metal valve stem to keep valve stem from pushing rearward, damaging antenna strap.
  8.  
  9. Remove sensor from wheel.

    Click image to see an enlarged view

    Fig. View of wheel, nut, and sensor

  10.  

To install:


NOTE
Anytime a Tire Pressure Monitor (TPM) sensor is reused on a wheel, it is necessary to install a new sensor-to-wheel seal, metal washer and valve stem nut, to ensure proper sealing around the sensor valve stem.

  1. Wipe the area clean around the sensor/valve stem mounting hole in the wheel. Make sure the surface of the wheel is not damaged.
    WARNING
    To avoid damaging the sensor antenna strap, hold pressure against the rear of the metal valve stem while the sensor is inserted through the wheel mounting hole and the nut is installed.



    Click image to see an enlarged view

    Fig. Exploded view of sensor mounting



    Click image to see an enlarged view

    Fig. View of tire pressure sensor, antenna strap, and valve stem

  2.  
  3. Insert the sensor through the wheel, keeping pressure against the rear of the metal valve stem. The potted side of the sensor is to be positioned toward the wheel. Do not attempt to mount the sensor otherwise, damage may occur.
  4.  
  5. Install the sensor nut (with pressed-in washer) by hand.
    NOTE
    Before tightening the sensor nut, push downward on the sensor housing in an attempt to make it flush with the interior contour of the wheel.

  6.  
  7. While holding the sensor in position, tighten the sensor nut to 40 inch lbs. (4.5 Nm).
    WARNING
    Over-torquing the sensor nut by as little as 106 inch lbs. (12 Nm) may result in sensor separation from the valve stem. Under this condition, the sensor may still function. However, the condition should be corrected immediately.

  8.  
  9. Mount the tire on wheel following tire changer manufacturers instructions, paying special attention to the following to avoid damaging tire pressure sensor:

    Rotating Wheel Tire Changers: Once the wheel is mounted to the changer, position the sensor valve stem approximately 210° from the head of the changer in a clockwise direction before rotating the wheel (also in a clockwise direction) to mount the tire. Use this procedure on both the upper and lower tire beads.
     
    Rotating Tool Tire Changers: Position the wheel on the changer so that the sensor valve stem is located approximately 210° clockwise from the installation end of the mounting/dismounting tool once the tool is mounted for tire installation. Make sure the sensor is clear of the lower bead breaker area to avoid damaging the sensor when the breaker rises. Rotate the tool in a counterclockwise direction to mount the tire. Use this procedure on both the upper and lower tire beads.

    Click image to see an enlarged view

    Fig. Mounting tire using rotating wheel machine



    Click image to see an enlarged view

    Fig. Mounting tire using rotating tool machine

     

  10.  
  11. Adjust air pressure to that listed on the Tire Inflation Pressure Label (Placard) provided with the vehicle (applied to driver's side B-pillar). Make sure the original style and color valve stem cap is securely installed to keep moisture out of the sensor.
  12.  
  13. Install wheel and tire assembly on vehicle. Tighten wheel mounting nuts to 100 ft. lbs. (135 Nm).
  14.  
  15. Lower vehicle.
  16.  
  17. Drive vehicle for a minimum of ten minutes while maintaining a continuous speed above 15 mph (24 km/h). During this time the system will learn the new sensor ID code and will clear any DTC's automatically.
  18.  

Transponder
  1. Remove the wheelhouse splash shield at the transponder requiring service.
  2.  
  3. Disconnect the wiring harness connector at the transponder.
  4.  
  5. Remove the mounting nuts, then remove the transponder.
  6.  

To install:

  1. Installation is the reverse of the removal procedure.
  2.  
  3. Perform the TPM diagnostic verification test.
  4.  

 
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