Scan Tool Data Definitions - Data

BATTERY VOLTAGE
Range: 9.0-19.0 Volts
This data refers to the battery system voltage that is measured by the instrument cluster.

VEHICLE SPEED
Range: 0-193 km/h (0-120 mph)
This is the instrument cluster's measurement of the vehicle's speed from a discrete input from the Vehicle Control Module (VCM) or Powertrain Control Module (PCM).

ENGINE SPEED
Range: 0-7,000 RPM
This is the instrument cluster's measurement of the engine speed in Revolutions Per Minute (RPM) from a discrete input from the Vehicle Control Module (VCM) or Powertrain Control Module (PCM).

MONITORED COOLANT TEMPERATURE
Range: -40-215°C (-40-419°F)
This data is the engine coolant temperature value sent to the instrument cluster by the VCM/PCM over the class 2 serial data line. If a class 2 communication failure occurs, this data will be -40.

DISPLAYED COOLANT TEMPERATURE
Range: 37.8-127°C (100-260°F)
The instrument cluster receives the engine coolant temperature information from the VCM/PCM over the class 2 serial data line. The instrument cluster then processes this information and displays it using the coolant temperature gauge. The displayed coolant temperature information refers to the information the instrument cluster is processing and attempting to display on the coolant temperature gauge. This data may be different from the monitored coolant temperature for a period of time due to filtering. The data may also be different from the monitored coolant temperature when the coolant temperature is not in the range of (37.8-127°C (100-260°F) since the display is limited to these values. If a class 2 communication failure occurs, this data will be at the minimum value of 37.8°C (100°F).

MONITORED FUEL LEVEL
Range: 0-100 percent
The fuel gauge sender monitors the level of fuel in the tank and sends this information to the VCM/PCM. The VCM/PCM then sends this information to the instrument cluster over the class 2 serial data line. If a class 2 communication failure occurs, this data will be 40°.

DISPLAYED FUEL LEVEL
Range: 0-100 percent
The VCM/PCM receives the displayed fuel level information from the fuel gauge sender. The VCM/PCM then sends the displayed fuel level information to the instrument cluster over the class 2 serial data line. The instrument cluster then processes this information and displays it using the fuel gauge. The displayed fuel level information refers to the information the instrument cluster is processing and attempting to display on the fuel gauge. This data may be different from the monitored fuel level for a period of time due to filtering. If a class 2 communication failure occurs, this data will be 0.

DISPLAYED ODOMETER
Range: 0-999,999 Kilometers/Miles
This data refers to the displayed odometer mileage on the odometer display.

DISPLAYED TRIP ODOMETER
Range: 0-9,999.9 Kilometers/Miles
This data refers to the displayed trip odometer mileage displayed on the trip odometer display.