Important: The following steps must be completed before using the symptom tables.
- Perform
Diagnostic System Check - Instrument Cluster
or
Diagnostic System Check - Audible Warnings
before using the symptom table in order to
verify that all of the following are true:
| • | The module(s) can communicate via the serial data link. |
- Review the system operation in order to familiarize yourself with
the system functions. Refer to the following:
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation
of the audible warnings, DIC, HUD, or IPC. 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. |
| • | For any indicator or message relating to fluid level, perform
a visual inspection of the fluid level before beginning diagnosis. |
| • | Verify that the indicators and the message display work properly
during the displays test. |
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 a symptom diagnostic procedure from the following list in order
to diagnose the symptom:
Audible Warnings
Driver Information Center (DIC)
For symptom diagnosis refer to
Driver Information Center (DIC) Switch Inoperative
.
Gages
Heads Up Display (HUD)
Indicators
