Important:
- Perform
Diagnostic System Check - Instrument Cluster
before using the symptom tables in order
to verify that all of the following are true:
| • | The control module(s) can communicate via the class 2 serial
data link. |
- Review the system operation in order to familiarize yourself with
the system functions. Refer to
Instrument Cluster Circuit Description
.
Visual/Physical Inspection
| • | Inspect for aftermarket devices which could affect the operation
of the instrument cluster or audible warnings 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. |
| • | For any indicator relating to fluid level, perform a visual inspection
of the fluid level before beginning diagnosis. |
| • | Verify that the indicators work properly during the bulb check. |
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:
