Tire Pressure Indicator Sensor Learn w/o WC2 or WC8

Tool Required

J 41760 Tire Pressure Sensor Activating Tool.

The tire pressure monitor (TPM) system uses the instrument panel cluster, dash integration module (DIM), remoter control door lock receiver (RCDLR), keyless entry transmitter, 4 radio frequency transmitting pressure sensors inside each wheel/tire assembly, and the serial data circuit to perform the sensor learn mode functions. The learn procedure must be performed after each tire rotation, after the RCDLR has been replaced, The vehicles battery has been disconnected, or a tire pressure sensor has been replaced. Once the learn mode has been enabled, each of the sensor's unique identification (ID) codes can be learned into the RCDLRs memory. When a magnet is held close to a sensor, an internal switch is closed forcing the sensor to transmit. After the RCDLR has received a sensor transmission, a class 2 message is sent from the RCDLR to the DIM to sound a horn chirp indicating a sensor ID was learned. The RCDLR must learn the sensor IDs in the proper sequence in order to determine sensor location. The learn mode will cancel if any of the following occurs:

If the learn mode is cancelled before any sensor IDs are learned, the RCDLR will remember all previously stored sensor IDs and their locations. As soon as the RCDLR learns the first sensor ID, all previously stored IDs are erased from the RCDLRs memory. Before proceeding with the steps below, ensure the TPM option is enabled in the RCDLR. Refer to Scan Tool Output Controls.

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

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

2. Press the keyless entry transmitter's lock and unlock buttons simultaneously until a single horn chirp sounds indicating the sensor learn mode has been enabled.

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

3. Starting with the left front tire, hold the J 41760 over the left front valve stem until a horn chirp sounds.
4. After the horn chirp sounds, proceed as in step 3 to the next sensors in the following order:

•	Right front

•	Right rear

•

Left rear

5. After the left rear sensor ID is learned, the double horn chirp will sound to indicating all sensor IDs have been learned.

Tire Pressure Indicator Sensor Learn WC2 or WC8

Important: The following procedures can only be performed on vehicles equipped with enhanced mobility tires (WC2 or WC8). Since the tire pressure sensor is secured to the run flat ring inside the wheel/tire assembly, the sensor cannot be reached using the sensor activating magnet.

Tire Rotation

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. With the scan tool select 2005.
4. Select LD Trk, MPV, Incomplete.
5. Select Cadillac Incomplete.
6. Select Limousine.
7. Select Chassis.
8. Select Tire Pressure Monitor.
9. Select Special Functions.
10. Select Tire Rotation/Sensor Replacement.
11. Select the sensor location and press the ENTER key.
12. Select the new location of the sensor by pressing the location soft key the sensor has been rotated to.
13. Repeat steps 12 and 13 for the remaining 3 sensors.
14. Press the EXIT key to escape.

Sensor Replacement

1. Install a scan tool.
2. Turn the ignition ON, with the engine OFF.
3. With the scan tool select 2005.
4. Select LD Trk, MPV, Incomplete.
5. Select Cadillac Incomplete.
6. Select Limousine.
7. Select Chassis.
8. Select Tire Pressure Monitor.
9. Select Special Functions.
10. Select Tire Rotation/Sensor Replacement.
11. Scroll and highlight to select the location for which the sensor is being replaced and press the ENTER key.
12. Using the numeric key pad on the scan tool enter the new 8 digit ID number as noted on the front side of the wheel mounting flange on the replacement wheel/tire assembly and press the ENTER key.
13. Press the YES key if the ID number entered is correct.
14. Press the EXIT key to escape.