Scan Tool Data Definitions Part 2
SCAN TOOL DATA DEFINITIONSIgnition 0 Signal: This parameter displays the ignition 0 input voltage to the control module.
Ignition 1 Signal: This parameter displays the ignition 1 input voltage to the control module.
Injector 1-8 Command: The scan tool displays 0-999.9 mS. Indicates the PCM command on the fuel injectors. The higher the number the longer the PCM is commanding the fuel injectors ON.
Intake CMP Angle Bank 1 or Bank 2: This parameter displays the degrees of retarded intake camshaft angle related to crankshaft position.
Intake CMP Angle Bank 1 or Bank 2 Command: This parameter displays the degrees of retarded intake camshaft angle as commanded by the ECM.
Inj. PWM Average Bank 1 or Bank 2: This parameter displays the average pulse width modulation (PWM) of the fuel injectors for bank 1 as determined by the control module.
Knock Retard: This parameters indicates overall engine knock retard as determined by the control module.
Knock Retard Cyl. 1-8: This parameter displays the knock retard as commanded by the control module for cylinders 1-8.
LT FT Bank 1 or Bank 2: This parameter displays the commanded Long Term Fuel Trim correction by the control module for bank 1 or bank 2.
LT FT Bank 1 or Bank 2 High RPM/Load: This parameter displays the commanded Long Term Fuel Trim correction by the control module for bank 1 or bank 2 for high RPM and high load conditions.
LT FT Bank 1 or Bank 2 Low RPM/Load: This parameter displays the commanded Long Term Fuel Trim correction by the control module for bank 1 or bank 2 for low RPM and low load conditions.
Loop Status: This parameter displays the state of the fuel control system as commanded by the control module. Closed Loop operation indicates that the control module is controlling the fuel delivery based off the oxygen sensors input voltage. In Open Loop operation the control module ignores the oxygen sensor input voltage and bases the amount of fuel to be delivered on other sensor inputs.
MAF: This parameter displays the measured quantity of air flowing into the engine during all operating conditions.
MAF: This parameter displays the measured quantity of air flowing into the engine during all operating conditions.
MAP Sensor: The scan tool displays a range of 10-105 kPa and 0.00-5.0 volts. The manifold absolute pressure (MAP) sensor measures the absolute pressure in the intake manifold.
MIL Circuit Status: This parameter displays the commanded state of the malfunction indicator lamp (MIL) control circuit by the control module.
MIL Command: This parameter displays the commanded state of the malfunction indicator lamp (MIL) control circuit. The malfunction indicator lamp should be on when the scan tool indicates the MIL Command is On. The malfunction indicator lamp should be off when the scan tool indicates the MIL Command is Off. The control module will command the MIL On when the ignition is ON with the engine OFF in order to perform a bulb check.
MIL Requested by DTC: This parameter displays if the MIL has been requested as a result of an A or B type DTC.
Mileage Since DTC Cleared: This parameter displays the mileage that has elapsed since any DTC has been cleared from the control modules memory.
Misfire History Cyl. 1-8: This parameter displays the total level of misfire that has been detected on each cylinder.
Misfire Detects Rough Road: This parameter displays if a misfire event occurred during a rough road condition.
Moderate Brake Apply Signal: The Scan tool displays Release and Applied. This parameter indicates when the brake pedal is depressed.
PNP Switch: This parameter displays whether the transmission range selector is in park or neutral.
Power Enrichment: This parameter displays the status of the operating mode of the control module used to increase fuel delivery during certain acceleration conditions.
Reduced Engine Power: This parameter displays whether the control module is commanding reduced engine power due to a TAC failure.
Reference Voltage 1 Signal: The scan tool displays Volts.
Reference Voltage 2 Signal: The scan tool displays Volts.
Short Term FT Bank 1 or Bank 2: This parameter displays the short-term correction to the fuel delivery by the control module in response to the amount of time the oxygen sensor 1 spends above or below the 450 mV threshold. If the oxygen sensor voltage averages less than 450 mV, indicating a lean air/fuel mixture, the control module will add fuel increasing the short term fuel trim above 0. If the oxygen sensor voltage averages more than 450 mV, indicating a rich air/fuel mixture, the control module will reduce fuel decreasing the short term fuel trim below 0.
Spark: This parameter displays the amount of spark advance the control module is commanding on the ignition control circuit. The control module determines the desired advance
Start Up ECT: This parameter displays the temperature of the engine coolant on start up based on input to the control module from the ECT sensor.
Start Up IAT: This parameter displays the temperature of the intake air at start up entering the air induction system based on input to the control module from the IAT sensor.
Starter Relay Command: This parameter displays the commanded state of the starter relay control circuit. The starter relay should be on when the scan tool indicates the Starter Relay Command is On. The starter relay should be off when the scan tool indicates the Starter Relay Command is Off.
Stoplamp Pedal Switch: This parameter displays the position of the stop lamp pedal switch input to the control module.
Torque Request Signal: This parameter indicates the desired amount of torque requested by the EBTCM.
TP 1 Learned Mm: This parameter displays the learned minimum value of TP sensor 1 as recorded by the control module on start up for the ignition cycle.
TP 2 Learned Mm: This parameter displays the learned minimum value of TP sensor 2 as recorded by the control module on start up for the ignition cycle.
TP Desired Angle: This parameter displays the desired throttle position (TP) angle commanded by the control module.
TP Indicated Angle: This parameter displays the percent of throttle opening as calculated by the control module using information from the two throttle position (TP) sensors.
TP Sensor 1: This parameter displays the actual voltage on the throttle position (TP) sensor 1 signal circuit as measured by the control module.
TP Sensor 1: This parameter displays the actual voltage on the throttle position (TP) sensor 1 signal circuit as measured by the control module. TP Sensor 2: This parameter displays the actual voltage on the throttle position (TP) sensor 2 signal circuit as measured by the control module.
TWC Temperature Calculated: Represents the calculated temperature of the catalytic converter. Useful for determining if the Catalyst Monitor Test has run.
Vehicle Speed Sensor: This parameter displays the speed of the vehicle as calculated by the control module from information received from the vehicle speed sensor (VSS).