Diagnostic Procedure
After recording any DTCs, clear DTCs from memory and test drive vehicle to verify symptom and see if any DTCs return. See CLEARING DTCS. After any repairs or adjustments to the cruise system have been made, clear codes and repeat procedure. When using the following diagnostic tests to pinpoint a faulty component or circuit, start with CCM ON-BOARD DIAGNOSTIC SYSTEM CHECK. The tests may also be used in conjunction with Diagnostic Trouble Codes (DTCs) displayed from CRUISE indicator light. See DIAGNOSTIC TROUBLE CODE TESTS.