Diagnostic Procedure

When cruise control functions are canceled, CRUISE indicator light will blink 5 times, indicating 2-digit trouble code(s) are stored in cruise control ECU memory. See RETRIEVING TROUBLE CODES  and retrieve trouble code(s). See DIAGNOSTIC TROUBLE CODE DEFINITIONS  table. Perform appropriate DTC test under appropriate DIAGNOSTIC TESTS .

If a fault or symptom is present, but no trouble codes were set, perform CRUISE CONTROL FUNCTION TEST  under TROUBLE SHOOTING. Cruise control function test will cause CRUISE indicator to display a one-digit function code if circuit tested is okay. After performing cruise control function test, if system still does not operate properly and no self-diagnostic trouble codes are present, perform SYMPTOM DIAGNOSIS  under TROUBLE SHOOTING.