In order to reset (calibrate) the system, turn the exterior lamp control from OFF to parking lamps 3 times within 5 seconds, while the ignition is ON. You may also reset the system through Vehicle Customization Settings using the following procedure:
Turn the ignition to ACC or ON and turn the radio off.
Press and hold the DISP button on the radio for at least five seconds until SETTINGS is displayed.
Press the SEEK up and down arrows to scroll through the main menu.
Scroll until TIRE MON appears on the display.
Press the PREV or NEXT button to enter the submenu. RESET will be displayed.
Press the DISP button to reset. A chime will be heard to verify the new setting and DONE will be displayed for one second.
Once the monitor has been reset, scroll until EXIT appears on the display.
Press the DISP button to exit programming. A chime will be heard to verify exit.
The system completes the calibration process during driving.
The system normally takes 15 - 20 minutes of driving in each of three speed ranges to learn tire pressures:
25 - 65 km/h (15 - 40 mph)
65 - 105 km/h (40 - 65 mph)
Above 105 km/h (65 mph)
To reset (calibrate) the system. The tire inflation monitor system can be reset by turning the exterior lamp control from OFF to parking lamps three times while the ignition is in ON. It can also be reset through the RDS radio (if equipped) using the following steps:
Turn the ignition to ACC or ON and turn the radio off.
Press and hold the DISP button on the radio for at least five seconds until SETTINGS is displayed.
Press the SEEK up or down arrow to scroll through the main menu.
Scroll until TIRE MON appears on the display.
Press the PREV or NEXT button to enter the submenu. RESET will be displayed.
Press the DISP button to reset. A chime will be heard to verify the new setting and DONE will be displayed for one second.
Once the monitor has been reset, scroll until EXIT appears on the display.
Press the DISP button to exit programming.
A chime will be heard to verify exit. The system completes the calibration process during driving.
The system normally takes 15 to 20 minutes of driving in each of three speed ranges to 'learn" tire pressures. The speed ranges are 15 to 40mph (25 to 65 km/h), 40 to 65 mph (65 to 105 km/h) and above 65 mph (105 km/h). When learning is complete, the system will alert you after 2-8 minutes if a tire is 12 psi (83 kPa) different from the other three tires. Detection thresholds may be higher and detection times may be longer on rough roads, curves and at high speeds. The system is not capable of detection at speeds greater than 70 mph (110 km/h).
Turn the ignition key to "ON" (engine off).
Push the RESET button located in the driver's side instrument panel fuse block.
The CHANGE OIL light will start to flash.
Press and release the RESET button again. The CHANGE OIL light will go off, and the LOW TIRE PRESSURE light will start to flash.
Press and hold the RESET button again until the chimes sound. If the LOW TIRE PRESSURE light does not go off, then see your dealer for service.
The system normally takes 15 to 20 minutes of driving in each of three speed ranges to "learn" tire pressures. The speed ranges are: 15 to 40 mph, 40 to 65 mpg, and above 65 mph. When learning is complete, the system will alert you after 2-8 minutes if a tire is 12 psi different from the other three tires. Detection thresholds may be higher and detection times longer on rough roads, curves and high speeds. The system is not capable of detection at speeds greater than 75 mph.
When the ignition is turned "OFF" and back "ON", the receiver is completely reset requiring another low tire pressure signal from a sensor to illuminate the "LOW TIRE PRESSURE" lamp again.
If a tire pressure message appears on the DIC, a chime will be heard. Press the RESET button to acknowledge the warning. The message will reappear after a timed interval if the problem has not been corrected. Once the condition causing the warning message is corrected the error message should not return after pressing the RESET button.
The Tire Pressure Monitor (TPM) system interfaces with the Instrument Panel Cluster (IPC) through the serial data line. Once the program mode is accessed through the IPC, each sensor's unique identification code can be programmed into the receiver's memory. Each sensor must transmit the unique code in the proper sequence. A magnet must be held close to the sensor in order to force the sensor to transmit the identification code. The IPC will display a message as each sensor is programmed, and when to proceed to the next sensor for programming. The receiver also sends a message to the BCM to sound the horn one time, indicating that the sensor properly transmitted an identification code. If the programming sequence is cancelled before any sensor is programmed, or if the vehicle's battery is disconnected, the receiver will remember all current identification codes. As soon as the receiver learns the first sensor identification code, all previously stored codes are erased from the receiver's memory.
Tool Required
J 41760
Important: Make sure the vehicle has been stationary for at least 2 minutes before attempting to program the TPM sensors.
Turn the ignition to ON.
Press the RESET button in order to clear any IPC display warning messages.
Press and release the OPTIONS button on the DIC to scroll through the display options until the IPC display is blank.
Press and hold the DIC RESET button for 3 seconds.
Notice: Refer to Body Control Module (BCM) Programming/RPO Configuration.
Press the OPTIONS button again until the TIRE TRAINING message appears.
Press the RESET button until the IPC LEARN L FRONT TIRE message appears in order to begin the programming sequence.
Install the J 41760 over the left front valve stem.
The horn will sound, indicating the left front TPM sensor is programmed.
When the horn sounds, proceed to program the next TPM sensor in the following order as directed by the IPC messages:
LEARN R FRONT TIRE
LEARN R REAR TIRE
LEARN L REAR TIRE
The programming mode will be cancelled if any of the following conditions are met:
The program mode is exited through the DIC.
The ignition is turned to OFF.
All four sensors have been programmed.
The TPM system has been in the program mode for longer than 2 minutes and no sensors have been learned.
If the program mode is cancelled with less than four codes stored, the receiver will only accept the codes programmed up to that point.
If a tire pressure message appears on the DIC, a chime will be heard. Press the RESET button to acknowledge the warning. The message will reappear after a timed interval if the problem has not been corrected. Once the condition causing the warning message is corrected the error message should not return after pressing the RESET button.
The Tire Pressure Monitor (TPM) system interfaces with the Instrument Panel Cluster (IPC) through the serial data line. Once the program mode is accessed through the IPC, each sensor's unique identification code can be programmed into the receiver's memory. Each sensor must transmit the unique code in the proper sequence. A magnet must be held close to the sensor in order to force the sensor to transmit the identification code. The IPC will display a message as each sensor is programmed, and when to proceed to the next sensor for programming. The receiver also sends a message to the BCM to sound the horn one time, indicating that the sensor properly transmitted an identification code. If the programming sequence is cancelled before any sensor is programmed, or if the vehicle's battery is disconnected, the receiver will remember all current identification codes. As soon as the receiver learns the first sensor identification code, all previously stored codes are erased from the receiver's memory.
Tool Required
J 41760
Important: Make sure the vehicle has been stationary for at least 2 minutes before attempting to program the TPM sensors.
Turn the ignition to ON.
Press the RESET button in order to clear any IPC display warning messages.
Press and release the OPTIONS button on the DIC to scroll through the display options until the IPC display is blank.
Press and hold the DIC RESET button for 3 seconds.
Notice: Refer to Body Control Module (BCM) Programming/RPO Configuration.
Press the OPTIONS button again until the TIRE TRAINING message appears.
Press the RESET button until the IPC LEARN L FRONT TIRE message appears in order to begin the programming sequence.
Install the J 41760 Tire Pressure Programming Tool over the left front valve stem.
The horn will sound, indicating the left front TPM sensor is programmed.
When the horn sounds, proceed to program the next TPM sensor in the following order as directed by the IPC messages:
LEARN R FRONT TIRE
LEARN R REAR TIRE
LEARN L REAR TIRE
The programming mode will be cancelled if any of the following conditions are met:
The program mode is exited through the DIC.
The ignition is turned to OFF.
All four sensors have been programmed.
The TPM system has been in the program mode for longer than 2 minutes and no sensors have been learned.
If the program mode is cancelled with less than four codes stored, the receiver will only accept the codes programmed up to that point.
If a tire pressure message appears on the DIC, a chime will be heard. Press the RESET button to acknowledge the warning. The message will reappear after a timed interval if the problem has not been corrected. Once the condition causing the warning message is corrected the error message should not return after pressing the RESET button.
Tools Required
J 41760 Tire Pressure Sensor Activating Tool
The Tire Pressure Monitor (TPM) system uses the remote control door lock receiver (RCDLR), body control module (BCM), driver information center (DIC), 4 radio frequency transmitting pressure sensors, and the serial data circuit to perform the TPM learn mode functions. The sensor learn procedure must be performed after a tire pressure sensor, or RCDLR replacement. Once the learn mode has been enabled, each of the sensors unique identification (Id) codes can be learned into the RCDLR's memory. After the RCDLR has received a sensor transmission, it sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted its Id and the RCDLR has received and learned it. The RCDLR must learn each sensor's Id in the proper order to determine sensor location. The first learned Id is assigned to the left front location, the second to right front, the third to right rear, and forth to left rear.
Each sensor has am internal magnetic reed switch. When the J 41760 sensor activating tool is held close to the sensor, the reed switch closes, activating the sensor. The sensor responds to a magnetic activation by transmitting in learn mode. When the RCDLR receives a learn mode transmission while in TPM learn mode, it will assign that sensor Id to the location on the vehicle relative to the order in which it was learned.
The RCDLR will cancel the TPM learn mode if the ignition is turned OFF, more than 1 minute has passed and no sensor Ids have been learned, or if more than 5 minutes have passed for the entire procedure. If the learn mode is cancelled before any sensor Ids are learned, the RCDLR will remember all previously stored Ids and their locations. As soon as the RCDLR learns the first sensor Id, all previously stored Ids are erased from the RCDLR's memory.
Turn ON the ignition, with the engine OFF.
Press the DIC RESET button in order to clear any warning messages.
Press and release the OPTIONS button until the display is blank.
Press and hold the RESET button for 3 seconds.
Important: If the DIC does not display the TIRE TRAINING message, ensure the TPM option is enabled in the RCDLR. Refer to Scan Tool Output Controls .
Press and release the OPTIONS button until TIRE TRAINING is displayed.
Press and release the RESET button and LEARN L FRONT TIRE is displayed, verifying the mode has been enabled.
Important: If a horn chirp does not sound after 15 seconds, remove then reinstall the sensor activating tool.
Starting at the left front sensor, hold the J 41760 over the valve stem until a horn chirp sounds.
After the horn chirp sounds, proceed as in step 7 for the next 3 sensors in the following order:
Right front
Right rear
Left rear
Turn the ignition OFF to exit the learn mode.
To remove or clear the "CHECK TIRE PRESSURE" message, you will need to set the tire(s) to the proper tire pressure.
Tools Required
J 41760 Tire Pressure Sensor Activating Tool
The Tire Pressure Monitor (TPM) system uses the remote control door lock receiver (RCDLR), body control module (BCM), driver information center (DIC), 4 radio frequency transmitting pressure sensors, and the serial data circuit to perform the TPM learn mode functions. The sensor learn procedure must be performed after a tire pressure sensor, or RCDLR replacement. Once the learn mode has been enabled, each of the sensors unique identification (Id) codes can be learned into the RCDLR's memory. After the RCDLR has received a sensor transmission, it sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted its Id and the RCDLR has received and learned it. The RCDLR must learn each sensor's Id in the proper order to determine sensor location. The first learned Id is assigned to the left front location, the second to right front, the third to right rear, and forth to left rear.
Each sensor has am internal magnetic reed switch. When the J 41760 sensor activating tool is held close to the sensor, the reed switch closes, activating the sensor. The sensor responds to a magnetic activation by transmitting in learn mode. When the RCDLR receives a learn mode transmission while in TPM learn mode, it will assign that sensor Id to the location on the vehicle relative to the order in which it was learned.
The RCDLR will cancel the TPM learn mode if the ignition is turned OFF, more than 1 minute has passed and no sensor Ids have been learned, or if more than 5 minutes have passed for the entire procedure. If the learn mode is cancelled before any sensor Ids are learned, the RCDLR will remember all previously stored Ids and their locations. As soon as the RCDLR learns the first sensor Id, all previously stored Ids are erased from the RCDLR's memory.
Turn ON the ignition, with the engine OFF.
Press the DIC RESET button in order to clear any warning messages.
Press and release the OPTIONS button until the display is blank.
Press and hold the RESET button for 3 seconds.
Important: If the DIC does not display the TIRE TRAINING message, ensure the TPM option is enabled in the RCDLR. Refer to Scan Tool Output Controls.
Press and release the OPTIONS button until TIRE TRAINING is displayed.
Press and release the RESET button and LEARN L FRONT TIRE is displayed, verifying the mode has been enabled.
Important: If a horn chirp does not sound after 15 seconds, remove then reinstall the sensor activating tool.
Starting at the left front sensor, hold the J 41760 over the valve stem until a horn chirp sounds.
After the horn chirp sounds, proceed as in step 7 for the next 3 sensors in the following order:
Right front
Right rear
Left rear
Turn the ignition OFF to exit the learn mode.
Tools Required
J-46079 Tire Pressure Monitor Diagnostic Tool
The tire pressure monitor (TPM) system uses the remote control door lock receiver (RCDLR), body control module (BCM), keyless entry transmitter, 4 radio frequency transmitting pressure sensors, and the serial data circuit to perform the TPM learn mode functions. The sensor learn procedure must be performed after each tire rotation, RCDLR replacement, or tire pressure sensor replacement. Once the TPM learn mode has been enabled, each of the sensors unique identification (ID) codes can be learned into the RCDLR's memory. When the RCDLR receives a sensor's transmission, it sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted its ID code and the RCDLR has received and learned it. The RCDLR must learn the sensor IDs in the proper order to determine sensor location. The first learned ID is assigned to the left front location, the second to right front, the third to right rear and the fourth to left rear.
Each sensor has an internal low frequency (LF) coil. When the J-46079 used in activate mode it produces an LF transmission that activates the sensor. The sensor responds to an LF activation by transmitting in learn mode. When the RCDLR receives a learn mode transmission while in TPM learn mode, it will assign that sensor's ID to the location on the vehicle relative to the order in which it was learned.
The RCDLR will cancel the TPM learn mode if more than 2 minutes have passed and no sensors have been learned, or if more than 5 minutes have passed for the entire procedure. If the learn mode is cancelled before any sensor IDs are learned, the RCDLR will remember all previously stored IDs and their locations. As soon as the RCDLR learns the first sensor ID, all previously stored IDs are erased from the RCDLR's memory.
Important: Before proceeding with the procedure below, ensure that no other learn procedure is being performed simultaneously.
Select the ACC position on the ignition switch.
Simultaneously press the keyless entry transmitter lock and unlock buttons until a horn chirp sounds, indicating the TPM learn mode has been enabled.
Starting with the left front tire, hold the antenna of the J-46079 against the tire sidewall close to the wheel rim at the valve stem location then press and release the Activate button and wait for a horn chirp.
After the horn chirp sounds, proceed as in step 3 for the next 3 sensors in the following order:
Right front
Right rear
Left rear
After the left rear sensor is learned, a double horn chirp will sound indicating all sensor IDs have been learned.
Select the OFF position on the ignition switch to exit the TPM learn mode.
IMPORTANT: There are 3 different ways to reset the Tire Pressure Monitor (TPM) system. After resetting, the TPM system requires up to 30 minutes of straight line driving in each of the 3 speed ranges to complete the calibration process, for further information, refer to Tire Pressure Monitor Description and Operation. If the TPM system does not reset, or DTC C1245 remains current, refer to Diagnostic System Check - Tire Pressure Monitoring.
Adjust all tire pressures to the recommended kPa/psi.
Turn ON the ignition, with the engine OFF.
Cycle the exterior lamp switch from OFF to parking lamps 3 times within 5 seconds.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi.
Turn the ignition to ACC or ON, with the engine OFF.
Turn the radio OFF.
Press and hold the DISP button until SETTINGS is displayed.
Press the SEEK up or down arrows until TIRE MON is displayed.
Press the PREV or NEXT button to enter the submenu. RESET will be displayed.
Press the DISP button, A chime will sound and DONE will be displayed.
Scroll until EXIT is displayed.
Press the DISP button to exit the TPM reset mode. A chime will sound to verify exit.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi.
Install the scan tool.
Turn ON the ignition, with the engine OFF.
With the scan tool select Special Functions.
Select TIM Reset.
Press the Reset soft key.
Use the scan tool in order to clear the TPM DTC.
IMPORTANT: There are 3 different ways to reset the Tire Pressure Monitor (TPM) system. After resetting, the TPM system requires up to 30 minutes of straight line driving in each of the 3 speed ranges to complete the calibration process. If the TPM system does not reset, or DTC C1245 remains current, refer to Diagnostic System Check - Tire Pressure Monitoring. For further information, refer to Tire Pressure Monitor - Description and Operation.
Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Placard.
Turn "ON" the ignition, with the engine OFF.
Cycle the exterior lamp switch from "OFF" to parking lamps 3 times within 5 seconds.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Placard.
Turn the ignition to "ACC" or "ON", with the engine OFF.
Turn the radio "OFF".
Press and hold the "DISP" button until "SETTINGS" is displayed.
Press the "SEEK" up or down arrows until "TIRE MON" is displayed.
Press the "PREV" or "NEXT" button to enter the submenu. "RESET" will be displayed.
Press the "DISP" button, A chime will sound and "DONE" will be displayed.
Scroll until "EXIT" is displayed.
Press the "DISP" button to exit the TPM reset mode. A chime will sound to verify exit.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Placard.
Install the scan tool.
Turn "ON" the ignition, with the engine OFF.
With the scan tool select "Special Functions".
Select TIM Reset.
Press the Reset soft key.
Use the scan tool in order to clear the TPM DTC.
IMPORTANT: There are 3 different ways to reset the Tire Pressure Monitor (TPM) system. After resetting, the TPM system requires up to 30 minutes of straight line driving in each of the 3 speed ranges to complete the calibration process. If the TPM system does not reset, or DTC C1245 remains current, refer to Diagnostic System Check - Tire Pressure Monitoring. For further information, refer to Tire Pressure Monitor - Description and Operation.
Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Placard.
Turn "ON" the ignition, with the engine OFF.
Cycle the exterior lamp switch from "OFF" to parking lamps 3 times within 5 seconds.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Placard.
Turn the ignition to "ACC" or "ON", with the engine OFF.
Turn the radio "OFF".
Press and hold the "DISP" button until "SETTINGS" is displayed.
Press the "SEEK" up or down arrows until "TIRE MON" is displayed.
Press the "PREV" or "NEXT" button to enter the submenu. "RESET" will be displayed.
Press the "DISP" button, A chime will sound and "DONE" will be displayed.
Scroll until "EXIT" is displayed.
Press the "DISP" button to exit the TPM reset mode. A chime will sound to verify exit.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi. Refer to Tire Placard.
Install the scan tool.
Turn "ON" the ignition, with the engine OFF.
With the scan tool select "Special Functions".
Select TIM Reset.
Press the Reset soft key.
Use the scan tool in order to clear the TPM DTC.
IMPORTANT: There are 3 different ways to reset the Tire Pressure Monitor (TPM) system. After resetting, the TPM system requires up to 30 minutes of straight line driving in each of the 3 speed ranges to complete the calibration process, for further information, refer to Tire Pressure Monitor Description and Operation. If the TPM system does not reset, or DTC C1245 remains current, refer to Diagnostic System Check.
Adjust all tire pressures to the recommended kPa/psi.
Turn "ON" the ignition, with the engine "OFF".
Cycle the exterior lamp switch from "OFF" to parking lamps 3 times within 5 seconds.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi.
Turn the ignition to "ACC" or "ON", with the engine "OFF".
Turn the radio "OFF".
Press and hold the "DISP" button until "SETTINGS" is displayed.
Press the "SEEK" up or down arrows until "TIRE MON" is displayed.
Press the "PREV" or "NEXT" button to enter the submenu. "RESET" will be displayed.
Press the "DISP" button, A chime will sound and "DONE" will be displayed.
Scroll until "EXIT" is displayed.
Press the "DISP" button to exit the TPM reset mode. A chime will sound to verify exit.
Use the scan tool in order to clear the TPM DTC.
Adjust all tire pressures to the recommended kPa/psi.
Install the scan tool.
Turn "ON" the ignition, with the engine "OFF".
With the scan tool select "Special Functions".
Select TIM Reset.
Press the "Reset" soft key.
Use the scan tool in order to clear the TPM DTC.
Tools
J-46079 Tire Pressure Monitor Diagnostic Tool.
The tire pressure monitor (TPM) system uses the passenger door module (PDM), body control module (BCM), exterior lamp switch, park brake switch, 4 radio frequency (RF) transmitting pressure sensors, and the serial data circuit to perform the TPM learn mode functions. The sensor learn procedure must be performed after the PDM is replaced, a sensor is replaced, or a tire rotation. Once the TPM learn mode has been enabled, each of the sensors unique identification (Id) codes can be learned into the PDM's memory. When a sensor's Id has been learned, the PDM sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted it's Id and the PDM has received and learned it. The PDM must learn the sensors Id codes in the proper sequence in order to determine sensor location. The first learned Id is assigned to left front, the second to right front, the third to right rear and fourth to left rear.
Each sensor takes a pressure measurement sample once every 20 seconds while in stationary mode. If the tire pressure increases, or decreases by more than 11 kPa (1.6 psi) from the last pressure measurement, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor transmits re-measure mode transmission. When the PDM receives a re-measure mode transmission while in TPM learn mode, it will assign that sensor Id to the location on the vehicle relative to the order in which it was learned.
Each sensor has an internal low frequency (LF) coil. When J-46079 is used in activate mode it produces an LF transmission that activates the sensor. The sensor responds to an LF activation by transmitting in learn mode. When the PDM receives a learn mode transmission while in TPM learn mode, it will assign that sensor's Id to the location on the vehicle relative to the order in which it was learned.
The PDM will cancel the learn mode if more then 2 minutes have passed and no sensors have been learned, or if the PDM has been in learn mode for more than 5 minutes. If the learn mode is canceled before any sensor has been learned, the PDM will remember all current sensor Ids and their locations. As soon as the fist sensor Id code is learned, all other Ids are erased from the PDM's memory.
Important: Before proceeding with the steps below, ensure that no other sensor learn procedure is being performed simultaneously, or that tire pressures are not being adjusted on a TPM equipped vehicle within close proximity.
Turn ON the ignition, with the engine OFF.
Apply the parking brake.
Important: If the TPM learn mode cannot be enabled, ensure the TPM system is enabled in the PDM.
Turn the exterior lamp switch from OFF to parking lamps 4 times within 4 seconds. A double horn chirp will sound and the low tire pressure indicator will begin to flash indicating the TPM learn mode has been enabled.
Caution: Over inflating tires may cause personal injury or damage to the tires and wheels. When increasing tire pressure do not exceed the maximum inflation pressure as noted on the tire sidewall.
Important: If a horn chirp does not sound after 35 seconds for any of the 4 sensors, turn the ignition OFF to exit the learn mode and repeat the procedure from step 1.
Starting with the left front tire, hold the antenna of the J-46079 against the tire sidewall close to the wheel rim at the valve stem location then press and release the activate button and wait for a horn chirp, or increase/decrease the tire pressure for 8-10 seconds, or until a horn chirp sounds. The horn chirp may occur before the 8-10 second pressure increase/decrease time period has been reached, or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached.
After the horn chirp has sounded, proceed as in step 4 for the next 3 sensors in the following order:
Right front
Right rear
Left rear
After all sensors have been learned, exit the learn mode by turning OFF the ignition.
After the learn mode has been exited, adjust all tire pressures to the recommended kPa/psi.
Tools Required
J-46079 Tire Pressure Monitor Diagnostic Tool
The tire pressure monitor (TPM) system uses the passenger door module (PDM), body control module (BCM), exterior lamp switch, 4 radio frequency transmitting pressure sensors, and the serial data circuit to perform the sensor learn mode functions. The sensor learn procedure must be performed any time the PDM is replaced, a sensor is replaced, or after the vehicles tires have been rotated. Once the learn mode has been enabled each of the sensors unique identification codes can be learned into the PDMs memory. When a sensor's ID code has been learned, the PDM sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted it's ID code and the PDM has received it. As soon as the fist sensor ID code is learned, all other IDs are erased from the PDMs memory.
Each sensor takes a pressure measurement sample once every 20 seconds while in stationary mode. If the tire pressure increases, or decreases by more than 11 kPa (1.6 psi) from the last transmitted pressure, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor sends a re-measure transmission to the PDM. When the PDM receives a re-measure transmission while in sensor learn mode, it will assign that sensor ID to that location on the vehicle.
Each sensor has an internal low frequency (LF) coil. When the J-46079 TPM tool is used in activate mode it produces an LF transmission that activates the sensor. The sensor responds to a LF activation by transmitting in learn mode. When the PDM receives a learn mode transmission while in TPM learn mode, it will assign that sensor's ID to the location on the vehicle relative to the order in which it was learned.
The PDM must learn the sensors ID codes in the proper sequence in order to determine sensor location.
The TPM system will cancel the learn mode if more then 2 minutes have passed and no sensors have been learned, or if the system has been in learn mode for more than 5 minutes. If the learn mode is canceled before any sensor has been learned, the PDM will remember all current sensor IDs and their locations.
Important: Before proceeding with the steps below, ensure that no other sensor learn procedure is being performed simultaneously, or that tire pressures are not being adjusted on a TPM equipped vehicle within close proximity.
Important: Important: When the sensor learn procedure is performed, the last known tire pressures are cleared from the PDM’s memory. On vehicles with UK3 that display the individual tire pressure on the DIC, the updated tire pressures will not be displayed until the PDM receives 2 more valid transmissions from each sensor. After performing the procedure below, always test drive the vehicle above 25 mph for at least 2 minutes before viewing tire pressures on the DIC.
Turn ON the ignition, with the engine OFF.
Apply the parking brake.
Important: If the learn mode cannot be enabled, ensure the TPM system is enabled in the PDM.
Turn the exterior lamp switch from OFF to parking lamps 4 times within 4 seconds. A horn chirp will sound and the low tire pressure indicator will begin to flash indicating the learn mode has been enabled.
Caution: Over inflating tires may cause personal injury or damage to the tires and wheels. When increasing tire pressure do not exceed the maximum inflation pressure as noted on the tire sidewall.
Important: If a horn chirp does not sound after 35 seconds for any of the 4 sensors, turn the ignition OFF to exit the learn mode and repeat the procedure from step 1.
Starting with the left front tire, hold the antenna of the J-46079 TPM tool against the tire sidewall close to the wheel rim at the valve stem location then press and release the activate button and wait for a horn chirp, or increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before the 8-10 second pressure increase/decrease time period has been reached, or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached.
After the horn chirp has sounded, proceed as in step 4 for the next 3 sensors in the following order:
Right front
Right rear
Left rear
After all sensors have been learned, exit the learn mode by turning OFF the ignition.
After the learn mode has been exited, adjust all tire pressures to the recommended kPa/psi.
Tools Required
J-46079 Tire Pressure Monitor Diagnostic Tool
The Tire Pressure Monitor (TPM) system uses the passenger door module (PDM w YE9/5B5)), remote control door lock receiver (RCDLR (wo YE9/5B5)), body control module (BCM), exterior lamp switch, 4 RF transmitting pressure sensors and the serial data circuit to perform the TPM learn mode functions. The sensor learn procedure must be performed after every tire rotation, PDM/RCDLR replacement, or sensor replacement. Once the TPM learn mode has been enabled, each of the sensor's unique identification (Id) codes can be learned in to the PDM/RCDLR's memory. When a sensor's Id has been learned, the PDM/RCDLR sends a serial data message to the BCM to sound a horn chirp. This verifies the sensor has transmitted its Id and the PDM/RCDLR has received and learned it. The PDM/RCDLR must learn the sensor Ids in the proper order to determine correct sensor location. The first learned Id is assigned to the left front location, the second to right front, the third to right rear and the fourth to left rear.
Each sensor takes a pressure measurement sample once every 30 seconds while in stationary mode. If the tire pressure increases, or decreases by more than 1.6 psi from the last transmitted pressure, another measurement will occur immediately to verify the change in pressure. If a pressure change has indeed occurred, the sensor transmits in re-measure mode. When the PDM/RCDLR receives a re-measure mode transmission while in TPM learn mode, it will assign that sensor's Id to the location on the vehicle relative to the order in which it was learned.
Each sensor has an internal low frequency (LF) coil. When the J-46079 is used in activate mode it produces an LF transmission that activates the sensor. The sensor responds to a LF activation by transmitting in learn mode. When the PDM/RCDLR receives a learn mode transmission while in TPM learn mode, it will assign that sensor's Id to the location on the vehicle relative to the order in which it was learned.
The learn mode will cancel if more than 2 minutes have passed and no sensor have been learned, or if more than 5 minutes has passed for the entire procedure. If the learn mode is canceled before any Ids are learned, the PDM/RCDLR will remember all previously stored Ids and their locations. As soon as the PDM/RCDLR learns the first Id, all other Ids are erased from the PDM/RCDLR's memory.
Important: Before proceeding with the steps below, ensure that no other sensor learn procedure is being performed simultaneously, or that tire pressures are not being adjusted on a TPM equipped vehicle within close proximity.
Turn ON the ignition, with the engine OFF.
Apply the parking brake.
Important: If the learn mode cannot be enabled, ensure the TPM system is enabled in the PDM/RCDLR.
3. Cycle the exterior lamp switch from OFF to parking lamps 4 times within 4 seconds. A double horn chirp will sound and the low tire pressure indicator will begin to flash indicating the learn mode has been enabled.
Caution: Over inflating tires may cause personal injury or damage to the tires and wheels. When increasing tire pressure do not exceed the maximum inflation pressure as noted on the tire sidewall.
Starting with the left front tire, hold the antenna of the J-46079 against the tire sidewall close to the wheel rim at the valve stem location then press and release the activate button and wait for a horn chirp, or increase/decrease the tire pressure for 8-10 seconds then wait for a horn chirp. The horn chirp may occur before the 8-10 second pressure increase/decrease time period has been reached, or up to 30 seconds after the 8-10 second pressure increase/decrease time period has been reached.
After the horn chirp has sounded, proceed as in step 4 for the next 3 sensors in the following order:
Right front
Right rear
Left rear
After the LR sensor has been learned, turn OFF the ignition to exit the learn mode.
After the learn mode has been exited, adjust all tire pressures to the recommended psi.