Initial Inspection and Diagnostic Overview

TIRE PRESSURE MONITORING SYSTEM (TPMS)

Inspection and Verification


NOTE: The tire pressure sensors are not designed to be used with aftermarket wheels.

NOTE: The use of run-flat tires (tires with steel body cord plies in the tire sidewall) where not originally equipped, may cause the TPMS system to malfunction and is therefore not recommended.

1. Verify the customer concern by inspecting the vehicle TPMS indicator.


NOTE: The valve-mounted TPMS sensors and the strap-mounted TPMS sensors are not compatible. Swapping wheels from one vehicle to another with the different systems will set a TPMS fault.Swapping wheels between vehicles with the same tire pressure monitoring system will cause a TPMS fault to be set if the sensors are not trained. See Tire Pressure Monitoring System (TPMS) Sensor Training.Non-OEM modifications made to the vehicle may result in false TPMS warnings.

2. Inspect to determine if one of the following mechanical or electrical concerns apply:

Visual Inspection Chart





3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.

4. If the cause is not visually evident, connect the scan tool to the data link connector (DLC).


NOTE: Make sure to use the latest scan tool software release.

5. If the scan tool does not communicate with the VCM:

- check the VCM connection to the vehicle.
- check the scan tool connection to the VCM.
- See Pinpoint Test 1: The PCM Does Not Respond To The Scan Tool Or No High Speed Controller Area Network (HS-CAN) Communication to diagnose no communication with the scan tool.

NOTE: The vehicle communication module (VCM) LED prove out confirms power and ground from the DLC are provided to the VCM.

6. If the scan tool does not communicate with the vehicle:

- verify the ignition key is in the ON position.
- verify the scan tool operation with a known good vehicle.
- See Pinpoint Test 1: The PCM Does Not Respond To The Scan Tool Or No High Speed Controller Area Network (HS-CAN) Communication to diagnose no response from the PCM.

7. Carry out the network test.

- If the scan tool responds with no communication for one or more modules, see Symptom Troubleshooting Chart.
- If the network test passes, retrieve and record continuous memory DTCs.

8. Clear the continuous DTCs and carry out the self-test diagnostics for the SJB (the tire pressure monitoring system is part of the SJB).

9. If the DTCs retrieved are related to the concern, go to the Tire Pressure Monitoring System (TPMS) DTC Chart. See - DTC Chart - Tire Pressure Monitoring System (TPMS). For all other DTCs, see - Symptom Related Diagnostic Procedures to continue diagnostics.

10. If no DTCs related to the concern are retrieved, see - Symptom Related Diagnostic Procedures to continue diagnostics.