A Symptoms

IMPORTANT: Perform Diagnostic System Check - Cruise Control before using the Symptom Tables in order to verify that all of the following are true:
^ There are no DTCs set.
^ The control modules can communicate via the serial data link. Diagnostic System Check - Cruise Control

Review the system operation in order to familiarize yourself with the system functions. Refer to Cruise Control Description and Operation.

Visual/Physical Inspection
^ Inspect for aftermarket devices which could affect the operation of the Cruise Control System. Refer to Checking Aftermarket Accessories in Diagnostic Aids.
^ Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent
Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent and Poor Connections in Diagnostic Aids.

Symptom List
Refer to the following symptom that does not set a DTC:
Cruise Control Inoperative/Malfunctioning.