Circuit/System Verification

NOTE:

If the vehicle is equipped with RPO KSG, it also has Adaptive Cruise Control. Refer to the Object Detection or the Driver Assistance Systems subsection for schematics, diagnostics, and description and operation related to Adaptive Cruise Control functions.

Ignition - On / Vehicle - In Service Mode
Verify the condition does not exist: Cruise Control System Status = Inhibit by ECM
- Cruise Control System Status = Inhibit by ECM
  If a condition exists - Repair or replace as necessary
- Go to next step: Cruise Control System Status is not equal to Inhibit by ECM
Verify the component works as specified: Cruise Control Switch Assembly
Observe that the cruise control switch parameter in the ECM cruise control data list changes as expected while operating the switch.
- If a condition exists
  Refer to Circuit/System Testing.
- Go to next step: If no condition exists
Verify that no DTC listed in the DTC Descriptor Category is set.
- If a related DTC is set
  Refer to Circuit/System Testing.
- Go to next step: If a related DTC is not set
All OK.