GM Service Manual Online
For 1990-2009 cars only
Table 1: Instrument Panel Cluster Scan Tool Data Parameters
Table 2: Instrument Panel Cluster Scan Tool Output Controls

Instrument Panel Cluster Scan Tool Data Parameters

Parameter

System State

Expected Value

Description

Operating Conditions: Ignition ON

Battery Voltage Signal

--

Varies

This displays Volts. This is the current battery voltage signal.

DIC Information Switch

--

Inactive

The scan tool displays Active or Inactive. This is the state of the driver information center (DIC) information switch.

DIC Switch Input

--

Varies

This displays Volts. This is the current driver information center (DIC) switch input voltage.

Ignition 1 Input

--

Active

The scan tool displays Active or Inactive. This is the state of the ignition 1 input.

Menu Switch

--

Off

The scan tool displays On or Off. This is the state of the menu switch.

Reset Switch

--

Inactive

The scan tool displays Active or Inactive. This is the state of the reset switch.

Instrument Panel Cluster Scan Tool Output Controls

Output Control

Description

DIC All Segments Test

This output control is used to command the driver information center (DIC) segments ON and OFF.

Dimming

This output control is used to command the dimming to INCREASE or DECREASE by 20% increments.

Display(s) Test

This output control is used to command the gages to sweep from minimum to maximum.

Display Test

This output control is used to command the instrument panel indicators to turn ON and OFF.