9-3 1999

Tire Pressure Monitor System

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Removal & Installation

The tire pressure monitor display is part of the instrument cluster.

  1. Before servicing the vehicle, refer to the precautions.
  2.  
  3. Remove instrument cluster mounting screws.
  4.  
  5. Remove the instrument cluster as shown.
  6.  
  7. Disconnect the instrument cluster electrical connector.
  8.  

To install:

  1. Installation is the reverse of removal.
  2.  

Pressure Monitor



Precautions

The tire pressures decrease naturally. In winter, tire pressure may decrease due to low ambient temperatures (tire pressure decreases by approximately 1.45 psi (10 kPa) for every 50°F (10°C) drop in the ambient temperature). Therefore, the tire pressure warning is more likely to operate if the tire pressures are not adjusted appropriately. If the daily temperature variation is large, pressurize the tires high so that the tire pressures are suitable under cold conditions. Incorrect tire pressure warning operation becomes less likely.

When the tire pressure warning light comes on, immediately check the tire pressure and adjust it to the specified value.

When the tire pressure warning light comes on after blinking for 1 minute, there is a malfunction in the system. Check for DTCs.

When a system malfunction occurs in the tire pressure warning system, the tire pressure warning light comes on after blinking for 1 minute and informs the driver of the system failure.

Servicing

It is necessary to register the transmitter ID in the tire pressure warning ECU after replacing a tire pressure warning valve and transmitter and/or tire pressure warning ECU.

  1. When replacing the tire pressure warning ECU:
    1. Read the transmitter IDs registered in the ECU and make a note of them before removing the tire pressure warning ECU.
    2.  
    3. Register the transmitter IDs after installing a new tire pressure warning ECU.
    4.  

  2.  
  3. When replacing a tire pressure warning valve and transmitter:
    1. Take note of the number (transmitter ID) written on the new tire pressure warning valve and transmitter when replacing it. Register the transmitter IDs in the tire pressure warning ECU after replacing the tire pressure warning valve and transmitter and installing the tires onto the wheels.
      NOTE
      The transmitter ID is written on the tire pressure warning valve and transmitter. It will be unable to be read after installing the tire onto the wheel. Therefore, take note of the transmitter ID before installing the tire onto the wheel. In order to register IDs, all IDs for the vehicle are necessary.

    2.  
    3. When replacing the tire pressure warning ECU and a tire pressure warning valve and transmitters, it is necessary to perform the initialization after the registration.
    4.  

  4.  

Transmitter



Removal & Installation
  1. Before servicing the vehicle, refer to the precautions.
  2.  
  3. Remove the wheel.
  4.  
  5. Remove the tire from the rim paying special attention to the following warning.
    WARNING
    Do not use tools within the marked area (shown). Always start outside the marked area and continue in the direction from the valve. Release the tire bead from the wheel rim diagonally opposite to the valve.



    Click image to see an enlarged view

    Fig. Do not use tools within the marked area. Always start outside the marked area and continue in the direction from the valve. Release the tire bead from the wheel rim diagonally opposite to the valve.

  6.  
  7. Remove the sensor nut.
  8.  
  9. Remove the sensor.
    NOTE
    Always use new gaskets when replacing the sensor.

  10.  
  11. Install the sensor and tighten nut to 6 ft. lbs. (8 Nm).
  12.  
  13. Install the tire and balance the wheel.
  14.  
  15. Retighten the sensor nut to specification.
  16.  
  17. Install the wheel.
  18.  
  19. After replacing the sensor, initialize the sensor as applicable.
    NOTE
    Some control modules do not need programming. The control module contacts the sensor itself after a few minutes driving.

  20.  

 
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