Tire Pressure Sensor: Service and Repair

Tire Pressure Monitor Sensor Replacement

Removal Procedure





Important: Before the tire is removed from the wheel care must be given in the following areas to ensure the TPM sensor is not damaged upon tire dismounting.
^ Place the cap and the valve on a dry clean surface after removal, the cap is aluminum and the valve is nickel plated to prevent corrosion and are not to be substituted with a cap or valve made of any other material.
^ When using the tire machine to separate the tire bead from the wheel, position the bead breaking fixture 90 degrees from the valve stem to ensure it does not interfere with the sensor.
^ When removing the tire from the wheel, ensure a tolerance is maintained between the tire machine fixture, or irons, tire bead, and the sensor.

1. Raise the vehicle on a suitable support. Refer to Vehicle Lifting.
2. Remove the tire and wheel assembly.
3. Remove the tire from the wheel.
4. Remove the TPM sensor nut.
5. Remove the TPM sensor.

Installation Procedure





Important: Care must be given in the following are as to ensure the TPM sensor is not damaged upon sensor installation and tire mounting.
^ Position the new sensor with the air passage facing away from the wheel.
^ When torquing the sensor nut ensure the sensor body stays parallel to the inside wheel surface and does not rotate and contact the wheel surface.
^ When mounting the tire back on the wheel, ensure a tolerance is maintained between the tire machine, or irons, tire bead, and the sensor.

1. Clean any dirt or debris from the sensor grommet sealing area of the wheel.
2. Insert the sensor in the valve stem hole.

Notice: Refer to Fastener Notice in Service Precautions.

3. Install the sensor nut.
^ Tighten
^ For domestic vehicles, tighten the nut to 4 Nm (35 inch lbs.).
^ For export vehicles, tighten the nut to 12 Nm (106 inch lbs.).
4. Install the tire on the wheel.
5. Install the tire and wheel.
6. Lower the vehicle.
7. Program the TPM sensors.

Tire Pressure Monitoring Sensor Programming
^ Tool Required
- J 41760 Tire Pressure Monitor (TPM) Programming Tool.

The Tire Pressure Monitor (TPM) system interfaces with the Instrument Panel Cluster (IPC), Dash Integration Module (DIM), and the Remoter Control Door Lock Receiver (RCDLR) via a class 2 serial data circuit to perform the sensor programming procedure. Once the program mode is accessed through the RCDLR, each sensor's unique identification code can be programmed into the RCDLR's memory. Each sensor must transmit it's ID code in the proper sequence in order for the TPM system to know the sensors location. A magnet must be held close to the sensor in order to force the sensor to transmit it's ID code. Once the RCDLR has received a sensors ID code a message is sent out on a class 2 serial data line to the DIM to sound a horn chirp, indicating that the sensor transmitted and the RCDLC received the ID code. If the programming sequence is cancelled before any sensor is programmed, the RCDLR will remember all current ID codes. As soon as the RCDLR learns the first sensor's ID code, all previously stored ID codes are erased from the RCDLR's memory. Loss of, or low vehicle battery voltage will cause the sensor ID codes to be erased from the RCDLR's memory. Before proceeding with the steps below, ensure the TPM option is enabled in the RCDLR and IPC.

Programming
1. Turn ON the ignition, with the engine OFF.

Important: If the sensor programming mode cannot be activated, ensure the TPM option is enabled in the RCDLR and the IPC as mentioned in the above supporting text.

2. Press the key fob lock and unlock buttons simultaneously for several seconds. A horn chirp will sound indicating the sensor programming mode is activated.

Important: If the horn chirp does not sound after 15 seconds, remove then replace the sensor programming tool over the valve stem.

3. Starting with the left front tire, place the J 41760 over the left front valve stem, a horn chirp will sound indicating the sensor's ID code has been programmed.
4. When the horn chirp sounds, proceed to program the next sensors in the following order:
^ Right front
^ Right rear
^ Left rear
5. After the left rear sensor is programmed, the horn chirp will sound twice to indicate programming is complete.

Programming Cancellation
The programming mode will be cancelled if any of the following conditions are met:
^ The ignition is turned OFF.
^ All four sensors have been programmed.
^ The TPM system has been in the program mode for longer than 5 minutes and no sensors have been programmed.
^ If more then one minute has passed before the next sensor is programmed, all previously stored codes are erased from the receiver's memory.
^ Vehicle battery voltage is below 8 volts.