For 1990-2009 cars

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 | Expected Value | Definition
--- | --- | ---
Operating Conditions: Ignition ON
Battery Voltage | Varies | This displays volts. The scan tool displays the system voltage of the vehicle.
Display Dimming | Varies | This displays 0-100%. This is the current displays dimming percentage.
Engine Speed Signal | 0 RPM | This displays 0-9999 RPM. The IPC monitors the engine speed signal circuit from the ECM via serial data.
Ignition 1 | Active | The scan tool displays Active or Inactive. This is the state of the ignition 1 voltage circuit to the instrument panel cluster (IPC).
LCD Dimming | Varies | This displays 0-100%. This is the current backlighting dimming percentage.
Passenger Seatbelt Indicator Commanded | Off | The scan tool displays On or Off. This is the state of the passenger seatbelt indicator command as monitored by the IPC.
Passenger Seatbelt Indicator Status | Off | The scan tool displays On or Off. This is the status of the passenger seatbelt indicator as monitored by the IPC.
Pointer Dimming | Varies | This displays 0-100%. This is the current pointer dimming percentage.
Vehicle Speed | 0 km/h (0 mph) | This displays km/h (mph). This is the current vehicle speed received by the IPC from the ECM via a serial data message.

#### Instrument Panel Cluster Scan Tool Output Controls

Scan Tool Output Control | Description
--- | ---
Coolant Gauge Sweep | The scan tool commands the IPC to sweep the coolant gage between minimum and maximum when selected.
Display Test | The IPC illuminates the indicators when you select On.
Fuel Gauge Sweep | The scan tool commands the IPC to sweep the fuel gage between minimum and maximum when selected.
Segment Check | The IPC varies the backlight intensity.
Speed Gauge Sweep | The scan tool commands the IPC to sweep the speedometer gage between minimum and maximum when selected.
Tach Gauge Sweep | The scan tool commands the IPC to sweep the tachometer gage between minimum and maximum when selected.