U0127

U0127-LOST COMMUNICATION WITH TIRE PRESSURE MONITOR MODULE





For a complete wiring diagram, refer to the Wiring Information. Electrical Diagrams

- When Monitored:
With the ignition on.

Battery voltage between 10 and 16 volts.

IOD fuse installed.

Totally Integrated Power Module (TIPM) is configured correctly.

- Set Condition:
Bus messages not received from the Tire Pressure Monitor Module (TPM) for approximately 500 ms.





1. VERIFY DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Make sure the IOD fuse is installed and battery voltage is between 10 and 16 volts before proceeding.

1. Using the scan tool, read active DTCs.

Is this DTC active?

Yes

- Go To 2

No

- Perform the Stored Lost Communication DTCs diagnostic procedure. Stored Lost Communication DTCs

2. CHECK FOR ANY OF THE FOLLOWING ACTIVE DTCS
1. Using the scan tool, read all active DTCs from all modules.

NOTE: Check for TIPM configuration, CAN B or C hardware electrical, VIN Missing/Mismatch, battery or ignition related DTCs.

Does the scan tool display any active DTCs to the conditions listed above?

Yes

- Go to and perform the appropriate diagnostic procedure.

No

- Go To 3

3. VERIFY THE TPM IS ACTIVE ON THE BUS
1. Turn the ignition on.
2. Using the scan tool, select ECU View.
3. Verify the TPM is active on the bus.

Is the TPM active on the bus?

Yes

- Go To 4

No

- Perform the No Response from TPM diagnostic procedure. No Response From TPM (Tire Pressure Monitor Module)

4. CHECK FOR ADDITIONAL COMMUNICATION RELATED DTCS
1. Using the scan tool, select Network View and select Advanced.

Is there more than one module with active DTCs "Logged Against" the TPM?

Yes

- Replace/update the Tire Pressure Monitor Module.
- Perform the BODY VERIFICATION TEST. Body Verification Test

No

- Replace/update the module that set this DTC
- Perform the appropriate verification test for the module being replaced. If there is no verification test for the associated module perform the BODY VERIFICATION TEST. Body Verification Test.