Scan Tool Data Definitions

ABS Input: The scan tool displays On or Off. The state of the Antilock Brake System (ABS) indicator as commanded by the IPC. The IPC receives a class 2 message from the electronic brake control module (EBCM) requesting illumination.
Battery Volts: The scan tool displays 0-19 volts. The voltage measured at the battery positive voltage circuit of the IPC.
Brake Fluid Switch: The scan tool displays the voltage at the brake fluid switch signal circuit as monitored by the IPC.
Current Gear: The scan tool displays the current gear of the transmission.
DIC Down Switch (CTS-V): The scan tool displays On/Off. This is the state of the driver information center (DIC) down switch.
DIC Switch Input (CTS-V): The scan tool displays the voltage at the DIC switch input.
DIC Information Switch (CTS-V): The scan tool displays On/Off. This is the state of the driver information center (DIC) information switch.
DIC Up Switch (CTS-V): The scan tool displays On/Off. This is the state of the driver information center (DIC) up switch.
ECT: The scan tool displays -40 to +151°C (-40 to +304°F). The engine control module (ECM) monitors the voltage at the signal circuit of the engine coolant temperature sensor. The voltage is inversely proportional to the engine coolant temperature.
ECT Sensor: 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 ECM calculates the amount of oil life remaining.
Engine Oil Level Switch: The scan tool displays OK or Low. The ECM monitors the signal circuit of the engine oil level switch. A closed switch is displayed as Low.
Engine Oil Pressure Sensor: The scan tool displays OK or Low. The ECM monitors the signal circuit of the engine oil pressure sensor.
Engine Oil Pressure Sensor: The scan tool displays the oil pressure in kPa or psi. The ECM calculates the current oil pressure of the engine.
Engine Oil Pressure Sensor: The scan tool displays 0-5 volts. The ECM monitors the signal circuit of the engine oil pressure sensor.
Engine Oil Pressure Switch: The scan tool displays OK or Low. The ECM monitors the signal circuit of the engine oil pressure switch. A closed switch is displayed as Low.
Engine Speed: The scan tool displays 0-8000 RPM. Engine speed is computed by the ECM from the ignition reference input. It should remain close to desired idle under various engine loads with the engine idling.
Engine Speed: The scan tool displays 0-8000 RPM. Engine speed is computed by the IPC via a discrete input from the ECM.
Fuel Level: The scan tool displays the approximate value of fuel remaining in liters or gallons. The ECM calculates the amount of fuel remaining in the tanks based on the signal circuits of the fuel level sensors.
Fuel Level Sensor Left: The scan tool displays 0-5 volts. The ECM monitors the signal circuit of the secondary fuel level sensor.
Fuel Level Sensor Right: The scan tool displays 0-5 volts. The ECM monitors the signal circuit of the primary fuel level sensor.
Fuel Tank Level Remaining: The scan tool displays the approximate value of fuel remaining in liters or gallons. The ECM calculates the amount of fuel remaining in the tanks based on the signal circuits of the fuel level sensors.
Fuel Tank Level Remaining: The scan tool displays the approximate value of fuel remaining in percentage. The ECM calculates the amount of fuel remaining in the tanks based on the signal circuits of the fuel level sensors.
Fuel Tank Rated Capacity: The scan tool displays the fuel tank capacity in liters/gallons as calculated by the ECM.
Ignition 0 Signal: The scan tool displays On/Off. The scan tool displays On if the ECM senses voltage in the ignition 0 voltage circuit.
Ignition 1 Signal: The scan tool displays On/Off. The scan tool displays On if the IPC senses voltage in the ignition 1 voltage circuit.
Ignition 1 Signal: The scan tool displays volts. This is the voltage at the ignition 1 input of the ECM.
Ignition Counter: The scan tool displays 0-50. The IPC counts the number of times the ignition is cycled.
Key in Ignition: The scan tool displays Yes or No. The dash integration module (DIM) monitors the key in ignition switch circuit. A closed switch with the key in the ignition is displayed as Yes.
Left Turn Signal: The scan tool displays On or Off. The IPC monitors the left turn signal supply voltage circuit. An active turn signal toggles the display between On and Off.
MIL Circuit Status: The scan tool displays OK or Low. This is the status of the malfunction indicator lamp (MIL) circuit as monitored by the ECM.
MIL Command: The scan tool displays On/Off. This is the commanded state of the MIL indicator by the ECM. The MIL should be On in the IPC when the scan tool displays MIL command On
Park Brake Switch: The scan tool displays On or Off. The IPC monitors the park brake switch circuit. A closed switch with the parking brake applied is displayed as On.
Reduced Engine Power: The scan tool displays Yes or No. The ECM determines if a loss of engine power has occurred.
Right Turn Signal: The scan tool displays On or Off. The IPC monitors the right turn signal lamps supply voltage circuit. An active turn signal toggles the display between On and Off.
Tap Up/Down Switch: The scan tool displays Up or Down. The IPC monitors the signal circuit of the Tap Up/Down switch.
Vehicle Security Status: The scan tool display On or Off. The scan tool displays Yes when the IPC receives a class 2 message from the VTD module requesting illumination of the security indicator.
Vehicle Speed: The scan tool displays 0-255 km/h (0-155 mph). This is the vehicle speed as calculated by the ECM from the vehicle speed sensor signal.
Vehicle Speed Sensor: The scan tool displays 0-255 km/h (0-155 mph). The IPC calculates the vehicle speed signal via a discrete input from the ECM.