U0447

U0447-00-IMPLAUSIBLE DATA RECEIVED FROM CENTRAL GATEWAY

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

- When Monitored:
Continuously monitored with the engine running and the Adaptive Cruise Control (ACC) Module in normal mode.

- Set Condition:
The ACC Module receives an implausible (default/error value or toggle error or parity error are present) message from the Body Control Module (BCM). The ACC module will disable the ACC system and the ACC UNAVAILABLE message will display in the Cabin Compartment Node (CCN). Once the Diagnostic Trouble Code (DTC) goes to stored, the ACC system will return to normal operation. The DTC will be cleared after a 100 consecutive key cycles of the STORED DTC.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

1. VERIFY THE DIAGNOSTIC TROUBLE CODE (DTC) IS ACTIVE

NOTE: Diagnose all communication DTCs before continuing.

1. Ignition on, engine not running.
2. With the scan tool, read ACC DTCs.

Is the DTC active at this time?

Yes

- Go To 2

No

- The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring and connectors, pay particulate attention the CAN circuits.
- Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test.

2. CHECK FOR ACTIVE OR STORED COMMUNICATION DTCs IN BCM
1. With the scan tool, read BCM DTCs.

Are any active or stored Communication DTCs set in the BCM?

Yes

- Perform the appropriate diagnostic procedure. Testing and Inspection

No
Go To 3

3. BCM COMMUNICATION RELATED DTCs IN OTHER MODULES
1. With the scan tool, select Network Diagnostics.

Is there more than one module with active DTCs "Logged Against" the BCM at this time?

Yes

- Replace and program the BCM.
- Perform the BODY VERIFICATION TEST. Body Verification Test.

No

- Replace and program the ACC Module.
- Perform the ADAPTIVE CRUISE CONTROL VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test.