Speed Control

P1644-INCORRECT VARIANT/CONFIGURATION

For a complete wiring diagram Refer to Diagrams/Electrical.

- When Monitored:

Continuously monitored with the engine running, ACC Module voltage is at battery voltage, and the ACC Module in normal mode.
- Set Condition:

Current and original Vehicle Configuration do not match. The ACC module will disable the Adaptive Cruise Control (ACC) system and the SERVICE ACC message will display in the CCN. Once the DTC goes to stored, the ACC system will return to normal operation. After a successful learning process the active DTC will be cleared automatically.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.

Diagnostic Test

1.ACC MODULE CHANGED

NOTE: Check the FCM for DTCs, repair all FCM DTC(s) before continuing.

NOTE: If the ACC module was swapped with another module from a different vehicle this DTC will set. Once the module has been configured to the vehicle it can not be moved to a different one.

Was the ACC Module replaced with one from another vehicle?

Yes

- Return the original ACC Module to the vehicle and proceed with testing. The Alignment Procedure will need to be performed.

No

- Replace the ACC Module.
- Perform the ACC MODULE VERIFICATION TEST. Adaptive Cruise Control (ACC) Verification Test