Scan Tool Data Definitions

SCAN TOOL DATA DEFINITIONS

Coolant Gauge Position: The scan tool displays 0-100%. The BCM receives a serial data message from the PCM/ECM regarding the engine coolant temperature and converts the data to percentage.

Driver Door Switch: The scan tool displays Open or Closed. The state of the driver door switch as commanded by the BCM.

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

Engine Oil Life Remaining: The scan tool displays 0-100%. The PCM calculates the remaining engine oil life.

Engine Speed: The scan tool displays 0-9999 RPM. Engine speed is computed by the ECM. It should remain close to desired idle under various engine loads with the engine idling.

Fuel Gauge Position: The scan tool displays 0-100%. The BCM calculates the amount of fuel remaining in the tank based on the serial data messages from the ECM/PCM regarding fuel level.

Fuel Level: The scan tool displays the amount of fuel left in Gallons or Liters. The ECM/PCM calculates the amount of fuel remaining in the tank based on the input from the fuel level sensor.

Key in Ignition: The scan tool displays Yes or No. The state of the key in ignition switch as commanded by the BCM.

Low Brake Fluid: The scan tool displays Yes or No. The state of the brake fluid level switch as commanded by the BCM.

Low Coolant: The scan tool displays Yes or No. The state of the coolant level switch as commanded by the BCM.

Pass Door Switches: The scan tool displays Open or Closed. The state of the passenger door switches as monitored by the BCM.

Software Date-Day: The scan tool displays the day the software was created for the BCM installed in the vehicle.

Software Date-Month: The scan tool displays the month the software was created for the BCM installed in the vehicle.

Software Date-Year: The scan tool displays the year the software was created for the BCM installed in the vehicle.

Software ID: The scan tool displays a numeric value. The identification of the BCM software installed in the vehicle.

Vehicle Speed: The scan tool displays 0-255 km/h (0-155 mph). The ECM/PCM monitors the signal circuit of the vehicle speed sensor.