Tire Pressure Monitoring
9045-IMPLAUSIBLE SIGNAL RECEIVED FROM CCN
For a complete wiring diagram Refer to Diagrams/Electrical Electrical Diagrams
- When Monitored:
Ignition on.
- Set Condition:
The TPM Module gets an implausible signal over the CAN B circuit from the CCN. The circuit is continuously monitored.
Always perform the Engine Pre-Diagnostic Troubleshooting procedure before proceeding. Testing and Inspection
Diagnostic Test
1. ACTIVE DTC
NOTE: Diagnose all CAN B and C communication failures before continuing.
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. Verification Tests
No
DTC is not active at this time. Test complete.
3. CNN IS ACTIVE ON THE CAN B BUS
With the scan tool, attempt to communicate with the CCN.
Is the CCN active on the bus?
Yes
- Go To 4
No
- Refer to Manufacturer Trouble Codes for No Response diagnostic procedures.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
4. DTCS STORED OR ACTIVE IN THE CCN
Are any active DTC(s) in the CCN?
Yes
- Refer to the appropriate information and perform the diagnostics for the DTCs.
- Perform TPM VERIFICATION TEST. Verification Tests
No
- Go to 5
5. ACTIVE DTCS IN THE FCM
With the scan tool, read DTC(s) in the Electronic Ignition Switch/Central Gateway Module.
Are any Communication DTCs active in the Electronic Ignition Switch/Central Gateway Module relating to the CCN?
Yes
- Refer to Manufacturers Trouble Codes for the diagnostic procedures.
- Perform BODY VERIFICATION TEST - VER 1. Body Verification Test
No
- Replace and program the TPM Module.
- Perform TPM VERIFICATION TEST. Verification Tests