Self-Diagnostic System
When vehicle is in cruise control mode, system will cancel due to a malfunction in vehicle speed sensor or speed control switch circuit. When cruise control functions are canceled, CRUISE indicator light will blink 5 times, indicating a Diagnostic Trouble Code (DTC) is stored in Engine Control Module (ECM) memory. See DIAGNOSTIC TROUBLE CODE DEFINITIONS table under SELF-DIAGNOSTIC SYSTEM.
NOTE:
Intermittent failures may cause CRUISE indicator light to flicker or come on. Light will go out after fault goes away. Fault may or may not be present at time of testing; however, a corresponding trouble code may be stored in Engine Control Module (ECM).