With CCN

9040 LOST COMMUNICATION WITH CCN

For a complete wiring diagram Refer to Diagrams/Electrical Electrical Diagrams


- When Monitored:

Ignition on.

- Set Condition:

The TPM Module has lost communication with the instrument cluster. The circuit is continuously monitored.







Always perform the Engine Pre-Diagnostic Troubleshooting procedure before proceeding. Testing and Inspection


Refer to Manufacturer Trouble Codes for diagnostic procedures and for further possible causes.



Diagnostic Test


1. ACTIVE DTC


NOTE: Review the vehicle repair history. If the Electronic Ignition Switch/Central Gateway Module has been replaced, ensure the that it has been programmed correctly.

Ignition on, engine not running.

With a scan tool, read DTCs.

Is the DTC active at this time?

Yes

- Go To 3

No

- Go To 2



2. INTERMITTENT CONDITION

NOTE: Check for any of the follow conditions:
- Poor wire to terminal connection
- Corroded terminals
- Backed out or loose terminals
- Broken wire internal to the insulation
- Dirty (partial) module ground


Were any of the above condition present?

Yes

- Repair as necessary.
- Perform TPM VERIFICATION TEST. Tire Pressure Monitor (TPM) Verification Test

No

DTC is not active at this time. Test complete.



3. OTHER COMMUNICATION DTC(S)

Using the scan tool, check other CAN B modules.

Are communication DTC(s) present?

Yes

- Refer to Manufacturer Trouble Codes.

No

- Replace the TPM Module.
- Perform TPM VERIFICATION TEST. Tire Pressure Monitor (TPM) Verification Test