Service Information

Volt

Symptoms - Cruise Control

Note: The following steps must be completed before using the symptom tables.

Before using the symptom diagnostic table, perform the Diagnostic Trouble Code (DTC) List - Vehicle in order to verify the following conditions:

•	There are no DTCs set.

•	The module can communicate via the serial data.

Review the system operation in order to understand the system functions. Refer to Cruise Control Description and Operation .

•	Inspect for aftermarket devices which can affect the operation of the cruise control system. Refer to Checking Aftermarket Accessories .

•	Inspect the accessible system components or the visible system components for obvious damage or for obvious conditions which can cause the symptom.

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

Refer to Cruise Control Malfunction in order to diagnose the symptom.