For 1990-2009 cars only
Important: Perform the
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.
Review the system operation in order to familiarize yourself with the
system functions. Refer to
Cruise Control Description and Operation
.
• The control module can communicate via the serial
data link.
Visual/Physical Inspection
| • | Inspect for upfitter or aftermarket devices which could affect the operation of the Cruise Control System. Refer to Checking Aftermarket Accessories in Wiring Systems. |
| • | 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 Conditions and Poor Connections in Wiring Systems.
Symptom List
Refer to one of the following symptom diagnostic procedures in order to diagnose the symptom:
| • | For all caterpillar engines refer to Caterpillar Diagnostic Information. |
