Diagnostic Starting Point

Diagnostic Starting Point - Tire Pressure Monitoring
Begin the system diagnosis with the Diagnostic System Check - Tire Pressure Monitoring. The Diagnostic System Check will provide the following information:
^ The identification of the control modules which command the system
^ The ability of the control modules to communicate through the serial data circuit
^ The identification of any stored Diagnostic Trouble Codes (DTCs) and their status

The use of the Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Test Description
The numbers below refer to the step numbers on the diagnostic table.
2. The lack of communication may be caused by a partial or a total malfunction of the circuit containing the class 2 serial data. The specified procedure will determine the particular condition.
3. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will collect all the available information before tests are performed.
4. The presence of ABS DTCs could cause the Tire Pressure Monitor (TPM) system to be disabled, which is controlled by the Electronic Brake Control Module (EBCM).