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:
^ No DTCs are set.
^ The Powertrain Control Module (PCM) 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 Diagrams.
^ 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 Diagrams.

Symptom List
^ Cruise Control Inoperative/Malfunctioning
^ Cruise Control Inoperative/Malfunctioning Using J 42958 Cruise Control Tester