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

--

Varies

This displays Volts. This is the current battery voltage.

Brake Fluid Level Switch

--

Off

The scan tool displays On or Off. This is the state of the brake fluid level switch.

Information Down Switch

--

Inactive

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

Information Up Switch

--

Inactive

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

Outside Air Temp

--

Varies

This displays Counts. This is the outside air temperature measured in counts.

Outside Air Temp. Filtered

--

Varies

This displays °F (°C). This is the filtered outside air temperature.

Outside Air Temp. Raw

--

Varies

This displays °F (°C). This is the raw outside air temperature.

Page Switch

--

Inactive

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

Set/Reset Switch

--

Inactive

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

Instrument Panel Cluster Scan Tool Output Controls

Output Control

Description

Coolant Gauge Sweep Test

This output control is used to sweep the coolant gage.

DIC / Odometer

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

Display Test

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

Fuel Gauge Sweep Test

This output control is used to sweep the fuel gage.

Speed Gauge Sweep Test

This output control is used to sweep the speedometer.

Tach Gauge Sweep Test

This output control is used to sweep the tachometer.