'06-09 models

The gauge assembly has a self-diagnostic function that does the following checks. It also has a customizeable reset function.

• Beeper drive circuit check.
• Indicator drive circuit check.
• Switch input test.
• LCD segments check.
• Communication line (Checks the engine coolant temperature signal, engine oil life index, fuel data request signal, CHECK FUEL CAP signal, charging system indicator ON/OFF signal, MIL ON/OFF signal, and cruise control system ON/OFF signal line between the gauge assembly and the ECM.).