For 1990-2009 cars
Battery Voltage Signal: The scan tool displays the system voltage of the vehicle.
Cruise Control Active: The scan tool displays Active/Inactive/Invalid. This is the status of the cruise control switch as commanded by the engine control module (ECM).
DIC Information Switch: The scan tool displays inactive or Active. This is the status of the driver information center (DIC) information switch as monitored by the instrument panel cluster (IPC).
DIC Switch: The scan tool displays Clear, Info, Menu or Reset. This is the status of the DIC buttons as commanded by the DIC.
DIC Switch Input: The scan tool displays volts. This is the status of the DIC buttons as monitored by the IPC.
Driver Door Ajar Switch: The scan tool displays Door Closed or Door Ajar. This is the status of the drivers door switch as commanded by the body control module (BCM).
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 engine oil life remaining.
Engine Oil Pressure Switch: The scan tool displays OK or Low. The status of the engine oil pressure switch as commanded by the ECM. The ECM monitors the signal circuit of the engine oil pressure (EOP) switch.
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 Level Sensor: The scan tool displays 0-5 volts. The ECM monitors the signal circuit of the fuel level sensor.
Fuel Tank Level Remaining: The scan tool displays 0-100%. The ECM calculates the amount of fuel remaining based on the signal circuit voltage of the fuel level sensor.
Fuel Tank Rated Capacity: The scan tool displays liters (gallons). This is the fuel tank rated capacity.
Ignition 1 Signal: The scan tool displays the system voltage of the vehicle.
Ignition 1 Input: The scan tool displays the system voltage of the vehicle at the IPC ignition 1 input circuit.
Ignition Accessory Signal: The scan tool displays On or Off. The scan tool displays On when there is voltage present at the ignition accessory signal circuit
Key In Ignition Cylinder Switch: The scan tool displays Yes or No. The BCM monitors the signal circuit of the ignition switch.
Menu Switch: The scan tool displays Off/On. This is the status of the DIC menu switch as monitored by the IPC.
MIL Circuit Status: The scan tool displays Incomplete/Short to GND/Open/Short to B+/Ok. The status of the malfunction indicator lamp (MIL) circuit as monitored by the ECM.
MIL Command: The scan tool displays On or Off. The status of the MIL indicator as commanded by the powertrain control module ECM.
Park Lamp Switch: The scan tool displays On or Off. The status of the park lamp switch as commanded by the BCM.
Reset Switch: The scan tool displays inactive or Active. This is the status of the DIC reset switch as monitored by the IPC.
Vehicle Speed Sensor: The scan tool displays 0-255 km/h (0-155 mph). The ECM monitors the signal circuit of the vehicle speed sensor.