Scan Tool Data Definitions

WARNING: This page is about a different car, the 2004 Cadillac SRX. However, it is still accessible from the selected car via links, so may be relevant.

8 Digit GM Part Number: The scan tool displays a numeric value. The GM Part Number of the IPC.
ABS Input: The scan tool displays On or Off. The state of the ABS indicator as commanded by the IPC. The IPC receives a class 2 message from the 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.
Calibration ID: The scan tool displays a numeric value. The identification of the calibration version of the IPC.
Commanded Gear: The scan tool displays Shift, 1st, 2nd, 3rd, 4th, 5th, Invalid, Reverse, Neutral or Park. The scan tool displays the commanded transmission range by the ECM.
Cruise Control Active: The scan tool displays Yes or No. This is the state of the cruise control switch as detected by the ECM
Current Gear: The scan tool displays the current gear of the transmission.
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 Temperature Sensor: The scan tool display °C (°F). This is the engine oil temperature as monitored by the ECM.
Engine Speed: The scan tool displays 0-8,000 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 0-8,000 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.
GEN L - Terminal: The scan tool displays Off/On. The ECM disables the generator under certain conditions to ease starting or engine load conditions.
Ignition 1: The scan tool displays On/Off. The scan tool displays On if the IPC senses voltage in the ignition 1 voltage circuit.
Ignition 0 Signal: The scan tool displays On/Off. The scan tool displays On when voltage is present at the ignition 0 voltage circuit of the ECM.
Ignition 1 Signal: The scan tool displays 9 - 16 V. This is the voltage present at the Ignition 1 voltage circuit of the ECM.
Ignition Counter: The scan tool displays 0-50. The IPC counts the number of times the ignition is cycled.
Julian Date of Build: The scan tool displays a numeric value. The date of build of the IPC.
Key in Ignition: The scan tool displays Yes or No. The 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. The status of the MIL circuit as monitored by the ECM.
MIL Command: The scan tool displays Yes or No. The scan tool displays Yes when the IPC receives a class 2 message from the ECM requesting illumination of the MIL indicator.
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.
PROM ID: The scan tool displays a numeric value. The PROM ID of the IPC.
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.
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 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.
Year Model Built: The scan tool a numeric value. The year the vehicle was built.