2010 Cadillac Truck Escalade AWD V8-6.2L Page 1009
aftermarket ignition systems, DVD players, CB radios, or metallic type window tinting.
* The sensor activation procedure may have to be repeated up to 3 times before determining a sensor is malfunctioning. In the event a
particular sensor's information is displayed on the special tool upon activation but the horn does not chirp, it may be necessary to rotate the
wheel valve stem to a different position due to the RF signal is being blocked by another component.
* Occasionally sensors can become mislocated due to previous tire rotations where the sensor learn procedure was not performed or stray
sensor transmissions have been received from other vehicles. Always learn the sensors to ensure the DTC set is for that actual physical corner
of the vehicle. Refer to Tire Pressure Indicator Sensor Learn (See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring
System/Tire Pressure Sensor/Testing and Inspection).
* A sensor low battery condition will set a sensor DTC but will not illuminate the low tire pressure indicator or display a message on the DIC,
if equipped. The sensor battery condition can be verified in the scan tool RCDLR data list. If a sensor low battery condition is indicated on
the scan tool, the sensor will need to be replaced. Refer to Tire Pressure Indicator Sensor Replacement (Snap In Style) (See: Instrument
Panel, Gauges and Warning Indicators/Tire Monitoring System/Tire Pressure Sensor/Service and Repair).
Reference Information
Description and Operation
Tire Pressure Monitor Description and Operation (See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Description
and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Special Tools
J-46079 Tire Pressure Monitor Diagnostic Tool
Circuit/System Verification
1. Using the J-46079, activate each tire pressure sensor and record each sensors transmission data and physical location. Verify J-46079
displays the 8-digit ID number, accurate tire pressure 锟斤拷27.6 kPa (4 psi), Learn Mode, and at least a 1/4 graph signal strength displayed.
锟斤拷If any of the parameters listed above are not displayed, replace the suspect tire pressure sensor.
2. With the scan tool, verify tire pressure sensors ID and locations displayed on the scan tool match the IDs and locations recorded from the
special tool.
锟斤拷If the IDs and locations do not match, perform the Tire Pressure Indicator Sensor Learn (See: Instrument Panel, Gauges and Warning
Indicators/Tire Monitoring System/Tire Pressure Sensor/Testing and Inspection).
3. Enable the TPM learn mode. Use the J-46079 in simulate mode to learn 4 simulated sensor transmissions into the RCDLR. Verify that all 4
simulated sensor locations, IDs, and tire pressures displayed on the TPM special tool match the corresponding scan tool parameters
displayed.
锟斤拷If the scan tool does not match, replace the RCDLR.
4. Test drive the vehicle above 40 km/h (25 mph) for greater than 2 minutes. With the scan tool, observe the suspect Pressure Sensor Mode data
parameter. Verify the sensor mode changes to Rolling.
锟斤拷If the Pressure Sensor Mode does not change, replace the suspect tire pressure sensor.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Tire Pressure Indicator Sensor Replacement (Snap In Style) (See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring
System/Tire Pressure Sensor/Service and Repair)
* Tire Pressure Indicator Sensor Learn (See: Instrument Panel, Gauges and Warning Indicators/Tire Monitoring System/Tire Pressure
Sensor/Testing and Inspection)
* Control Module References (See: Testing and Inspection/Programming and Relearning) for RCDLR replacement, programming, and setup.
