For 1990-2009 cars

Table 1: | Instrument Panel Cluster (IPC)
Table 2: | Engine Control Module (ECM)

#### Instrument Panel Cluster (IPC)

Scan Tool Output Control | Additional Menu Selections | Description
--- | --- | ---
Display Test | Special Functions | The instrument panel cluster (IPC) illuminates all indicators when ON is selected for a few seconds and turns OFF after a few seconds or when OFF is selected.
DIC All Segment Test | Special Functions | The IPC illuminates all of the driver information center (DIC) segments and turns OFF all DIC segments after a few seconds or when OFF is selected
Dimming | Special Functions | The IPC increases or decreases the dimming intensity in increments of 20 percent between a range of 0-100 percent.
IPC Gage Sweep Test | Special Functions | The IPC drives all the gages at or above maximum for a few seconds when ON is selected and then drives all the gages at or below minimum after a few seconds or when OFF is selected

#### Engine Control Module (ECM)

Scan Tool Output Control | Additional Menu Selections | Description
--- | --- | ---
Special Functions | Malfunction Indicator Lamp (MIL) | The engine control module ECM commands the malfunction indicator lamp (MIL) indicator ON and OFF.