Scan Tool Data Definitions

ABS Lamp: The scan tool displays On/Off. The state of the ABS indicator as commanded by the IPC.

Battery: The scan tool displays On/Off. The state of the battery indicator as commanded by the IPC.

Battery Voltage:
^ The scan tool displays 0 - 19 volts. The voltage measured at the battery positive voltage circuit of the BCM.
^ The scan tool displays 0 - 19 volts. The voltage measured at the battery positive voltage circuit of the IPC.

Brake Lamp: The scan tool displays On/Off. The state of the BRAKE indicator as commanded by the IPC.

Dimming: The scan tool displays Active/Inactive. Active is displayed when the park lamps are ON. Inactive is displayed when the park lamps are OFF.

Displayed Coolant Temp: The scan tool displays the coolant temperature displayed by the IPC. This value may slightly differ from the monitored coolant temperature.

Displayed Fuel Level: The scan tool displays the fuel level data displayed by the IPC. This value may slightly differ from the monitored fuel level.

Displayed Odometer: The scan tool displays the odometer data displayed by the IPC in kilometers miles).

Displayed Trip Odometer: The scan tool displays the trip odometer data displayed by the IPC in kilometers miles).

Driver Door Jamb SW: The scan tool displays Active/Inactive. The output of the driver door jamb switch, where an open switch is displayed as Active (door open).

ECT Sensor: The scan tool displays -40 to +151°C (-40 to +304°F). The PCM monitors the voltage at the signal circuit of the engine coolant temperature sensor. The voltage is inversely proportional to the engine coolant temperature.

Engine Speed:
^ The scan tool displays 0 - 9999 RPM. The IPC monitors the engine speed signal circuit from the PCM.
^ The scan tool displays 0 - 9999 RPM. Engine speed is computed by the PCM from the 3X reference input. It should remain close to desired idle under various engine loads with the engine idling.

Fasten Seat Belts: The scan tool displays On/Off. The state of the fasten safety belt indicator as commanded by the IPC.

Fuel Tank Level Remaining: The scan tool displays 0 - 100%. The PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.

Hi Beam Lamp: The scan tool displays On/Off. The state of the high beam indicator as commanded by the IPC.

Ignition 1: The scan tool displays Active/Inactive. The BCM displays Active if it senses voltage at the ignition 1 input.

Ignition 3: The scan tool displays Active/Inactive. The BCM displays Active if it senses voltage at the ignition 3 input.

Key In Ignition: The scan tool displays Yes/No. The BCM monitors the key in ignition switch, where a closed switch is displayed as Yes (key is in the ignition).

Left Turn Signal: The scan tool displays On/Off. The BCM monitors the left turn signal switch, where a closed switch is displayed as On.

Low Fuel Lamp: The scan tool displays On/Off. The state of the indicator as commanded by the IPC.

Module Part Number: The scan tool displays the GM part number of the IPC.

Monitored Coolant Temp: The scan tool displays the coolant temperature data as provided to the PC from the PCM via the class 2 serial data link.

Monitored Fuel Level: The scan tool displays the fuel level data as provided to the IPC from the PCM via the class 2 serial data link.

Overspeed Lamp: The scan tool displays On/Off. The state of the overspeed indicator as commanded by the IPC.

Park Brake Switch: The scan tool displays Set/Released. The BCM monitors the park brake switch signal circuit.

Park Lamps: The scan tool displays On/Off. The BCM monitors the signal circuit of the park lamp switch. A closed switch is displayed as On

Park Switch: The scan tool displays Open/Closed. The state of the park position switch where a closed switch is displayed as CLOSED (shifter in park).

PRNDL State: The scan tool displays the PRNDL range of the vehicle. The state of the PRNDL range as communicated to the IPC by the PCM via the class 2 serial data link.

Right Turn Signal: The scan tool displays On/Off. The IPC monitors the right turn signal switch, where a closed switch is displayed as On.

Security Lamp: The scan tool displays On/Off. The state of the security indicator displayed on the IPC.

Security Lamp State: The scan tool displays On/Off/Flashing. The state of the security indicator as commanded by the BCM.

Service 4WD: The scan tool displays On/Off. The state of the Service 4WD indicator as commanded by the IPC.

Tow/Haul: The scan tool displays On/Off. The IPC monitors the tow/haul switch, where a closed switch is displayed as On (switch pressed).

Trip Reset Switch: The scan tool displays Active/Inactive. The IPC monitors the trip reset switch, where a closed switch is displayed as Active (switch pressed).

Upshift Lamp: The scan tool displays On/Off. The state of the Upshift indicator as commanded by the IPC.

Vehicle Speed:
^ The scan tool displays 0-255 km/h (0-155 mph). The BCM monitors the vehicle speed signal circuit from the PCM.
^ The scan tool displays 0-255 km/h (0-155 mph). The IPC monitors the vehicle speed signal circuit from the PCM.

Vehicle Speed Sensor: The scan tool displays 0 - 255 km/h (0 - 155 mph). The PCM monitors the voltage at the signal circuit of the vehicle speed sensor. The voltage is proportional to the vehicle speed.