Engine Control Module Scan Tool Data Parameters

Parameter	Operating Conditions	Expected Value	Definition
Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
5 Volt Reference 1	-	Volts	This parameter displays the voltage sensed on the 5 volt reference 1 at the engine control module.
5 Volt Reference 2	-	Volts	This parameter displays the voltage sensed on the 5 volt reference 2 circuit at the control module.
5 Volt Reference 1 Circuit Status	-	OK	This parameter will display OK if the circuit is good or Fault if a short to ground, short to B+ or open circuit is present.
5 Volt Reference 1 Circuit Status	-	Fault
5 Volt Reference 2 Circuit Status	-	OK	This parameter will display OK if the circuit is good or Fault if a short to ground, short to B+ or open circuit is present.
5 Volt Reference 2 Circuit Status	-	Fault
A/C Disengagement 1st History	-	None	This parameter indicates the reason the A/C compressor was disengaged. The reasons displayed are: None, A/C Pressure, Eng Spd, Batt Voltage, Stall Prevention, RPM Unstable, WOT, Launch Perf, Coolant Hot.
A/C Disengagement 2nd History	-	None
A/C Disengagement 3rd History	-	None
A/C Disengagement 4th History	-	None
A/C Disengagement 5th History	-	None
A/C Disengagement 6th History	-	None
A/C Disengagement 7th History	-	None
A/C Disengagement 8th History	-	None
A/C Off for WOT (Air Conditioning)	-	Yes	This parameter indicates if the A/C system was commanded off for a wide open throttle event.
A/C Off for WOT (Air Conditioning)	-	No
A/C High Side Pressure Sensor	-	0 - 3,450 kPa	This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the control module.
A/C High Side Pressure Sensor	-	0 - 5 Volts	The scan tool displays 0-5 volts. This is the output of the A/C refrigerant pressure sensor.
A/C Pressure Disable	-	Yes	The scan tool displays Yes or No. Yes is displayed when the system pressure exceeds 3,034 kPa (440 psi).
A/C Pressure Disable	-	No
A/C Relay Circuit Status	-	OK	This parameter displays the status of the output driver for the A/C Relay control circuit. The scan tool will display OK if the circuit is operating correctly or Fault if a diagnosis has not been made.
	-	Fault
	-	Incomplete
A/C Relay Command	-	On	The scan tool displays ON or OFF. ON is displayed when the ECM has energized the A/C compressor relay.
A/C Relay Command	-	Off
A/C Request Signal (Air Conditioning)	-	Yes	The scan tool displays Yes or No. Yes is displayed when the HVAC control module is requesting A/C operation.
A/C Request Signal (Air Conditioning)	-	No
Air Flow Calculated	-	g/s	This parameter displays the air flow of the engine as calculated by the engine control module using information from the manifold absolute pressure (MAP) sensor. The scan tool will display a range of values indicating a high air flow when MAP pressure is high and a low air flow when MAP pressure is low. This value is listed in grams per second (g/s).
Ambient Air Temperature	-	°C	This parameter displays the ambient, outside, air temperature as calculated by the engine control module.
APP Indicated Angle	-	0 - 100 %	This parameter displays the angle of the accelerator pedal as calculated by the control module using the signals from the accelerator pedal position sensors. The accelerator pedal position (APP) indicated angle is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed.
APP Sensors	-	Counts	This parameter displays the average of the APP sensors as calculated by the throttle actuator control (TAC) module. The APP average is a range of values indicating a low number when the accelerator pedal is not depressed to a high number when the accelerator pedal is fully depressed. This value is listed in counts.
APP Sensor 1 (Accelerator Pedal Position)	-	Volts	This parameter displays the voltage signal sent to the control module from APP sensor 1 of the APP sensor assembly. APP sensor 1 is a range of values indicating a low voltage when the accelerator pedal is not depressed to a high voltage when the accelerator pedal is fully depressed.
APP Sensor 1 Indicated Position (Accelerator Pedal Position)	-	0 - 100 %	This parameter displays the angle of the APP sensor 1 as calculated by the control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed.
APP Sensor 2 (Accelerator Pedal Position)	-	Volts	This parameter displays the voltage signal sent to the control module from APP sensor 1 of the APP sensor assembly. APP sensor 1 is a range of values indicating a low voltage when the accelerator pedal is not depressed to a high voltage when the accelerator pedal is fully depressed.
APP Sensor 2 Indicated Position (Accelerator Pedal Position)	-	0 - 100 %	This parameter displays the angle of the accelerator pedal position (APP) sensor 1 as calculated by the engine control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.
APP Sensors 1 and 2	-	Agree	This parameter displays the results of a control module test that compares the signals from the APP sensors 1 and 2. The scan tool will display Agree or Disagree. Agree indicates that APP sensor 1 and APP sensor 2 voltages correspond to the same accelerator pedal position. Disagree indicates that APP sensor 1 and APP sensor 2 voltages correspond to different accelerator pedal positions.
APP Sensors 1 and 2	-	Disagree
BARO (Barometric Pressure)	-	kPa	This parameter displays the voltage signal received by the control module from the manifold absolute pressure (MAP) sensor measured when the ignition is turned on with the engine not running. The control module will update the barometric pressure during wide-open throttle (WOT) conditions. The scan tool will display a low value when the barometric pressure is low, and a high value when the barometric pressure is high.
BPP Circuit Signal	-	Applied	This parameter displays the state of the brake pedal position circuit signal as determined by the brake pedal switch. The scan tool will display Applied when the brake pedal is depressed, and Released when the brake pedal is not depressed.
BPP Circuit Signal	-	Released
BPP Signal	-	Applied	This parameter displays the state of the brake pedal position signal as determined by the brake pedal switch. The scan tool will display Applied when the brake pedal is depressed, and Released when the brake pedal is not depressed.
BPP Signal	-	Released
Calculated TWC Temperature Bank 1	-	°C	Calculated catalytic converter temperature
Calculated TWC Temperature Bank 2	-	°C	Calculated catalytic converter temperature
Catalytic Converter Protection	-	Active	This parameter indicates the status of the control module control for catalytic converter protection. The scan tool will indicate Active if the control module is adjusting fuel and ignition quantity and timing to protect the catalytic converter from damage. The scan tool will indicate Inactive if the control module is in a normal fuel and ignition control mode.
Catalytic Converter Protection	-	Inactive
Change Engine Oil Indicator Command	-	On	This parameter displays a low engine oil life remaining and requires an oil change. This notice is calculated by the engine control module based on many inputs. The oil change symbol on indicates the next oil change will be required
Change Engine Oil Indicator Command	-	Off
CMP Active Counter	-	Counts	This parameter displays an incrementing counter when the control module receives a signal from the camshaft position (CMP) sensor.
CMP Sensor	-	RPM	This parameter displays the speed of the engine as calculated by the signal from the camshaft position (CMP) sensor
CKP Active Counter	-	Counts	This parameter displays an incrementing counter when the engine control module receives a signal from the crankshaft position (CKP) sensor.
CKP Resync Counter	-	Counts	This parameter displays the number of times the engine control module re-syncs with the crankshaft position (CKP) sensor.
CKP Sensor	-	RPM	This parameter displays the engine speed as calculated by the engine control module using the signal form the crankshaft position (CKP) sensor.
Cold Start Up	-	Yes	This parameter indicates whether the engine meets the conditions for a cold start-up during the present ignition cycle. The scan tool displays Yes when the conditions for a cold start-up are met during this ignition cycle. The scan tool displays No when the conditions for a cold start-up are not met during the present ignition cycle. Conditions for a cold start-up require the coolant temperature and the intake air temperature to be below a predetermined temperature and within a certain range of each other. These conditions must occur after the engine was warmed up to a specific temperature during the previous ignition cycle.
Cold Start Up	-	No
CPP Switch (If equipped)	-	Applied	This parameter displays the current state of the clutch pedal position as determined by the control module.
CPP Switch (If equipped)	-	Released
Crank Request Signal	-	Yes	This parameter displays whether the ignition switch has been cycled to the crank position requesting the control module to activate the starter relay.
Crank Request Signal	-	No
Cruise On/Off Switch	-	On	This parameter displays the status of the cruise control system as determined by the engine control module. The scan tool will display On when the cruise control system is in control of vehicle speed. The scan tool will display Off when the cruise control system is not operating.
Cruise On/Off Switch	-	Off
Cruise Control Active	-	Active	This parameter displays the status of the cruise control system as determined by the engine control module. The scan tool will display Active when the cruise control system is in control of vehicle speed. The scan tool will display Inactive when the cruise control system is not operating.
Cruise Control Active	-	Inactive
Cruise Disengage 1st History	-	None	The parameter displays the last 8 cruise control disengages in order from 1 to 8, with 8 being the most recent. There are about 33 possible causes for the cruise control to disengage.
Cruise Disengage 2nd History	-	None
Cruise Disengage 3rd History	-	None
Cruise Disengage 4th History	-	None
Cruise Disengage 5th History	-	None
Cruise Disengage 6th History	-	None
Cruise Disengage 7th History	-	None
Cruise Disengage 8th History	-	None
Cruise Resume/Accel Switch	-	Active	This parameter displays the status of the cruise resume/acceleration switch.
Cruise Resume/Accel Switch	-	Inactive
Cruise Set/Coast Switch	-	Active	This parameter displays the status of the cruise set/deceleration switch.
Cruise Set/Coast Switch	-	Inactive
Cycles of Misfire Data	-	Counts	This parameter displays the number of cylinder firing events that were recorded as misfires as determined by the engine control module.
Cylinder 1 Deactivate Solenoid Command	-	Yes	This parameter displays Yes when V4 mode is commanded or OFF when V8 mode is commanded
Cylinder 1 Deactivate Solenoid Command	-	No
Cylinder 1 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 1 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 2 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 2 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 3 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 3 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 4 Deactivate Solenoid Command	-	Yes	This parameter displays Yes when V4 mode is commanded or OFF when V8 mode is commanded
Cylinder 4 Deactivate Solenoid Command	-	No
Cylinder 4 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 4 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 5 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 5 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 6 Deactivate Solenoid Command	-	Yes	This parameter displays Yes when V4 mode is commanded or OFF when V8 mode is commanded
Cylinder 6 Deactivate Solenoid Command	-	No
Cylinder 6 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 6 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 7 Deactivate Solenoid Command	-	Yes	This parameter displays Yes when V4 mode is commanded or OFF when V8 mode is commanded
Cylinder 7 Deactivate Solenoid Command	-	No
Cylinder 7 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 7 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
Cylinder 8 Ignition Control Circuit Status	-	Okay	This parameter displays the state of the ignition control circuit. The parameter displays Fault if the ignition control circuit is open, short to ground, or short to voltage. This parameter displays incomplete until the engine control circuit has been commanded on.
	-	Fault
	-	Incomplete
Cylinder 8 Injector Circuit Status	-	Okay	This parameter displays the status of the output driver for the injector control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Failed
	-	Incomplete
Cylinder Deactivation Cycle	-	Counts	This parameter displays the number of times the engine switches between V8 mode, and V4 mode during each ignition cycle. The counter will reset to zero and increment again, if the count reaches 255 during the current ignition cycle.
Cylinder Deactivation Disable 1 History	-	None	The parameter displays the last 8 cylinder deactivation disable in order from 1 to 8, with 8 being the most recent.
Cylinder Deactivation Disable 2 History	-	None
Cylinder Deactivation Disable 3 History	-	None
Cylinder Deactivation Disable 4 History	-	None
Cylinder Deactivation Disable 5 History	-	None
Cylinder Deactivation Disable 6 History	-	None
Cylinder Deactivation Disable 7 History	-	None
Cylinder Deactivation Disable 8 History	-	None
Cylinder Deactivation Performance Test	-	OK	This parameter displays OK if all the Active Fuel Management enabling conditions are met. The parameter displays Fault if one or more enabling conditions are out of range.
Cylinder Deactivation System Command	-	Active	This parameter displays V8 when all four Active Fuel Management (AFM) cylinder solenoids are deactivated or V4 when the AFM cylinder solenoids are activated.
Cylinder Deactivation System Command	-	Inactive
Dec. Fuel Cutoff (Deceleration)	-	Active	This parameter displays the status of the operating mode of the engine control module used to turn off the fuel injectors and the evaporative emission (EVAP) canister purge valve during certain deceleration conditions.
Dec. Fuel Cutoff (Deceleration)	-	Inactive
Desired Idle Speed	-	1144 RPM	This parameter displays the desired engine idle speed as commanded by the engine control module.
Distance Since DTC Cleared	-	Km	This parameter displays the distance accumulated since an emission diagnostic trouble code was cleared. The scan tool will display increasing distance as the vehicle is driven.
Distance with Cylinder Deactivated	-	Km	This parameter displays the distance accumulated since an cylinder was deactivated. The scan tool will display increasing distance as the vehicle is driven.
Distance with Cylinder Activated	-	Km	This parameter displays the distance accumulated since an cylinder was activated. The scan tool will display increasing distance as the vehicle is driven.
EC Ignition Relay Circuit Status	-	Okay	This parameter displays the status of the output driver for the EC Ignition Relay control circuit. The scan tool will display Okay, Incomplete and Failed. The scan tool will display Okay if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
EC Ignition Relay Command	-	On	This parameter displays the commanded state of the EC Ignition relay control circuit. The scan tool will display ON or OFF. ON indicates the EC ignition relay control circuit is being grounded by the control module, allowing voltage to other control module circuits and systems. OFF indicates the EC ignition relay is not being commanded on by the control module.
EC Ignition Relay Command	-	Off
EC Ignition Relay Feedback Signal	-	Volts	This parameter displays the voltage available at the EC ignition relay pin of the engine control module.
ECM in VTD Fail Enable	-	Yes	The scan tool displays Yes or No. The scan tool displays Yes if the body control module (BCM) and the Engine control module lose communications with each other after the BCM sends the correct password. The scan tool displays No if the BCM is communicating the correct password to the ECM.
ECM in VTD Fail Enable	-	No
ECT Sensor	-	°C	This parameter displays the engine coolant temperature as calculated by the engine control module.
Engine Load	-	0 - 100 %	This parameter displays the calculated engine load in percent based on inputs to the engine control module from various engine sensors.
Engine Off Time	-	hh:mm:ss	This parameter displays the time elapsed since the engine was switched off. The scan tool will display the time in hours, minutes and seconds. The engine run time will reset to zero as soon as the engine starts running.
Engine Oil Level Switch (If equipped)	-	OK	This parameter displays the state of the engine oil level switch as determined by the control module. The scan tool will display OK or Low. OK indicates that the engine oil level is not too low for safe operation of the engine. Low indicates the engine oil level is abnormally low and has closed the engine oil level switch.
Engine Oil Level Switch (If equipped)	-	Low
Engine Oil Life Remaining	-	0 - 100 %	This parameter displays the percent of engine oil life remaining. The controller calculates the engine oil life by monitoring engine load, coolant temperature, and engine speed.
Engine Oil Pressure (EOP) Sensor	-	kPa	This parameter displays the engine oil pressure.
Engine Oil Pressure Switch	-	OK	This parameter displays the state of the EOP as determined by the control module. The control module monitors the EOP switch to determine if the EOP is sufficient. The scan tool will display low when the EOP is below a predetermined value.
Engine Oil Pressure Switch	-	Low
Engine Oil Temperature	-	° C	This parameter displays the temperature of the engine oil.
Engine Oil Temperature Calculated	-	° C	This parameter displays the temperature of the engine oil as calculated by the engine control module.
Engine Run Time	-	hh:mm:ss	This parameter displays the time elapsed since the engine was started. The scan tool will display the time in hours, minutes and seconds. The engine run time will reset to zero as soon as the engine stops running.
Engine Speed	-	RPM	This parameter displays the speed of the crankshaft as calculated by the control module based on inputs from the Crankshaft Position (CKP) Sensor. The scan tool will display the engine speed in revolutions per minute (RPM).
EVAP Fault History	-	No Fault	This parameter displays the result of the evaporative emission (EVAP) system diagnostic as determined by the control module. The scan tool will display various messages, depending on the result of the test.
EVAP Purge Solenoid Circuit Status	-	Okay	This parameter displays the diagnostic state of the output driver for the evaporative emission purge solenoid control circuit as determined by the control module. The scan tool will display OK if the circuit is operating correctly. The scan tool will display the appropriate fault if there is an open, short to ground or a short to voltage on the circuit. The scan tool will display Incomplete if the diagnostic has not completed.
	-	Fault
	-	Incomplete
EVAP Purge Solenoid Command (Evaporative Emission)	-	0 - 100 %	This parameter displays the commanded state of the EVAP purge solenoid control circuit. The scan tool will display 0-100%. A high value indicates the purge solenoid control circuit is being commanded more by the control module, opening the EVAP purge solenoid. A low value indicates the purge solenoid is being commanded on less by the control module.
EVAP Vent Solenoid Circuit Status	-	Okay	This parameter displays the diagnostic state of the output driver for the evaporative emission vent solenoid control circuit as determined by the control module. The scan tool will display OK if the circuit is operating correctly. The scan tool will display the appropriate fault if there is an open, short to ground or a short to voltage on the circuit. The scan tool will display Incomplete if the diagnostic has not completed.
	-	Fault
	-	Incomplete
EVAP Vent Solenoid Command	-	Venting	This parameter displays the commanded state of the EVAP vent solenoid control circuit. The scan tool will display venting or not venting. Not venting indicates the purge solenoid control circuit is being commanded ON by the control module, closing the EVAP vent solenoid. Venting indicates the vent solenoid is not being commanded by the control module, allowing the solenoid to remain open.
EVAP Vent Solenoid Command	-	Not Venting
Ext. Travel BPP Signal	-	Applied	This parameter displays Applied, Released, or Invalid. A state of Applied indicates the brake pedal position sensor has traveled beyond a moderate, extended threshold as determined by the brake sensing module and received over serial data.
Ext. Travel BPP Signal	-	Released
FC Circuit Short Ground Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit.
	-	Fault
	-	Not Run
FC Circuit Open Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit.
	-	Fault
	-	Not Run
FC Circuit Short Volts Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit.
	-	Fault
	-	Not Run
FC Circuit Status	-	OK	This parameter displays OK, Fault or Incomplete. This indicates the state of the FC Circuit.
	-	Fault
	-	Incomplete
FC Relay 1 Command	-	On	This parameter displays ON or OFF. This indicates the commanded state of the relay by the ECM.
FC Relay 1 Command	-	Off
FC Relay 1 Circuit Short Volts Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay 1 control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit.
	-	Fault
	-	Not Run
FC Relay 1 Circuit Short Ground Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay 1 control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit.
	-	Fault
	-	Not Run
FC Relay 1 Circuit Open Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay 1 control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit.
	-	Fault
	-	Not Run
FC Relay 2 and 3 Command	-	On	This parameter displays ON or OFF. This indicates the commanded state of the relay by the ECM.
FC Relay 2 and 3 Command	-	Off
FC Relay 2 and 3 Circuit Short Ground Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay 2 & 3 control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to ground on the circuit
	-	Fault
	-	Not Run
FC Relay 2 and 3 Circuit Open Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay 2 & 3 control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit.
	-	Fault
	-	Not Run
FC Relay Circuit Short Volts Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short to voltage on the circuit.
	-	Fault
	-	Not Run
FC Relay Circuit Open Test Status	-	OK	This parameter displays the status of the output driver for the fan control relay control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit.
	-	Fault
	-	Not Run
Fuel Level Sensor Right Tank	-	Volts	This parameter displays the voltage from the signal produced by the sensor used to monitor the fuel level inside the fuel tank. The scan tool will display a low voltage reading when the fuel level in the tank is low or near empty. The scan tool will display a high voltage reading when the fuel level in the tank is high or near full.
Fuel Level Sensor Left Tank	-	Volts	This parameter displays the voltage from the signal produced by the sensor used to monitor the fuel level inside the fuel tank. The scan tool will display a low voltage reading when the fuel level in the tank is low or near empty. The scan tool will display a high voltage reading when the fuel level in the tank is high or near full.
Fuel Pump Relay Command	-	On	This parameter displays the commanded state of the fuel pump relay control circuit. The fuel pump relay should be On when the scan tool indicates the fuel pump relay command is On. The fuel pump relay should be Off when the scan tool indicates the fuel pump relay command is Off.
Fuel Pump Relay Command	-	Off
Fuel Pump Relay Circuit Status	-	Okay	This parameter displays the state of the fuel pump relay control circuit. The parameter displays Fault if the fuel pump relay control circuit is open, short to ground, or short to voltage. The parameter displays Indeterminate until the circuit has been commanded on.
	-	Failed
	-	Incomplete
Fuel Tank Level Remaining	-	0 - 100 %	This parameter displays the amount of fuel remaining in tall of the fuel tanks of the vehicle as a percentage. The control module calculates this level using the signals from the sensors used to monitor the fuel level in the fuel tanks. The scan tool will display a low reading when the total fuel level in the vehicle is low or near empty. The scan tool will display a high reading when the fuel level in the tank is high or near full.
Fuel Tank Pressure Sensor	-	mmHg	This parameter displays the fuel tank pressure as calculated based on a signal sent to the control module from the fuel tank pressure (FTP) sensor. The scan tool will display a low value when the pressure in the fuel tank is low or a vacuum. The scan tool will display a high value when the pressure in the fuel tank is high.
Fuel Tank Pressure Sensor	-	Volts	This parameter displays the voltage signal sent to the control module from the sensor used to monitor the pressure inside the fuel tank. The scan tool will display a low voltage when the pressure in the fuel tank is high. The scan tool will display a high voltage when the pressure in the fuel tank is low or in a vacuum.
Fuel Tank Rated Capacity	-	72.9 Liters	The scan tool displays Liters or gallons. This parameter displays the fuel tank capacity as determined by the calibrations of the vehicle.
Fuel Trim Cell	-	Index	This parameter displays the fuel trim cell as calculated by the control module based on many sensor inputs. The fuel trim cell indicates which cell is currently active.
Fuel Trim Learn	-	Enable	The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled. If the scan tool displays Disabled, then long term fuel trim will not respond to changes in short term fuel trim.
Fuel Trim Learn	-	Disable
Fuel Volatility	-	Low	This parameter indicates the rate the fuel can be vaporized in the cylinder as calculated by the control module. The scan tool displays Low, Moderate, or High. The scan tool will display HIGH when the fuel volatility is high. The scan tool will display LOW when the fuel volatility is low.
Fuel Volatility	-	High
GEN L-Terminal Command	-	0 - 100 %	This parameter displays the commanded state of the generator by the engine control module. The percentage indicates the capacity in which the generator is commanded to operate at by the engine control module.
GEN L-Terminal Circuit Status	-	OK	This parameter displays the status of the output driver for the generator L-terminal control circuit. The scan tool will display OK if the circuit is operating correctly or Not Run if a diagnosis has not been made. The scan tool will display Fault if there is a short on the circuit.
	-	Fault
	-	Incomplete
GEN F-Terminal Signal	-	0 - 100 %	This parameter displays the commanded state of the generator by the control module. A High value indicates a high charging command, and a low value indicates a low charging command.
HO2S Bank 1 Sensor 1	-	mV	This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
HO2S Bank 1 Sensor 1 Heater	-	Amperes	This parameter displays the current through the control module when the bank 1 sensor 1 O2 heater is commanded ON by the control module. O2 Heater Bank 1 Sensor 1 is a range of values indicating a low current when the heater circuit resistance is high to a high current when the heater circuit resistance is low.
HO2S Bank 1 Sensor 1 Heater Command	-	0 - 100 %	This parameter displays the commanded state of the heater control circuit for oxygen bank 1 sensor 1. The oxygen sensor heater should be on when the scan tool indicates the HO2S Heater Command is On. The oxygen sensor heater should be off when the scan tool indicates the HO2S Heater Command is Off.
HO2S Bank 1 Sensor 1 Heater Command	-	On	This parameter displays the commanded state of the bank 1 sensor 1 heater by the engine control module. The scan tool will display On when the heater is commanded on. The scan tool will display Off when the heater is commanded off.
HO2S Bank 1 Sensor 1 Heater Command	-	Off
HO2S Bank 1 Sensor 2	-	mV	This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
HO2S Bank 1 Sensor 2 Heater	-	Amperes	This parameter displays the current through the control module when the bank 1 sensor 2 O2 heater is commanded ON by the control module. O2 Heater Bank 1 Sensor 2 is a range of values indicating a low current when the heater circuit resistance is high to a high current when the heater circuit resistance is low.
HO2S Bank 1 Sensor 2 Heater Command	-	0 - 100 %	This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display a higher percentage as the heater command is increased, and a lower percentage if the heater is not commanded ON.
HO2S Bank 1 Sensor 2 Heater Command	-	On	This parameter displays the commanded state of the bank 1 sensor 2 heater by the engine control module. The scan tool will display On when the heater is commanded on. The scan tool will display Off when the heater is commanded off.
HO2S Bank 1 Sensor 2 Heater Command	-	Off
HO2S Bank 2 Sensor 1	-	mV	This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
HO2S Bank 2 Sensor 1 Heater	-	Amperes	This parameter displays the current through the control module when the bank 2 sensor 1 O2 heater is commanded ON by the control module. O2 Heater Bank 2 Sensor 1 is a range of values indicating a low current when the heater circuit resistance is high to a high current when the heater circuit resistance is low.
HO2S Bank 2 Sensor 1 Heater Command	-	0 - 100 %	This parameter displays the commanded state of the heater control circuit for oxygen bank 2 sensor 1. The oxygen sensor heater should be on when the scan tool indicates the HO2S Heater Command is On. The oxygen sensor heater should be off when the scan tool indicates the HO2S Heater Command is Off.
HO2S Bank 2 Sensor 1 Heater Command	-	On	This parameter displays the commanded state of the bank 2 sensor 1 heater by the engine control module. The scan tool will display On when the heater is commanded on. The scan tool will display Off when the heater is commanded off.
HO2S Bank 2 Sensor 1 Heater Command	-	Off
HO2S Bank 2 Sensor 2	-	mV	This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
HO2S Bank 2 Sensor 2 Heater	-	Amperes	This parameter displays the current through the control module when the bank 2 sensor 2 O2 heater is commanded ON by the control module. O2 Heater Bank 2 Sensor 2 is a range of values indicating a low current when the heater circuit resistance is high to a high current when the heater circuit resistance is low.
HO2S Bank 2 Sensor 2 Heater Command	-	0 - 100 %	This parameter displays the commanded state of the heater control circuit for oxygen bank 2 sensor 2. The oxygen sensor heater should be on when the scan tool indicates the HO2S Heater Command is On. The oxygen sensor heater should be off when the scan tool indicates the HO2S Heater Command is Off.
HO2S Bank 2 Sensor 2 Heater Command	-	On	This parameter displays the commanded state of the bank 2 sensor 2 heater by the engine control module. The scan tool will display On when the heater is commanded on. The scan tool will display Off when the heater is commanded off.
HO2S Bank 2 Sensor 2 Heater Command	-	Off
Hot Open Loop	-	Inactive	This parameter indicates the status of the fuel delivery system. The scan tool will display Active if the fuel system is running in open loop due to a temperature concern. The scan tool will display Inactive if the fuel system is operating normally.
Hot Open Loop	-	Active
IAT Sensor	-	°C/F	This parameter displays the temperature of the intake air calculated by the engine control module based on the input from the intake air temperature (IAT). The scan tool will display a low value for a low intake air temperature, and a high value for a high intake air temperature.
Ignition Accessory Signal	Ignition is in ACC position	On	This parameter displays the state of the ignition input to the control module from the ignition switch. The scan tool will display On when the ignition switch is in the ignition accessory position. The scan tool will display Off when the ignition switch is in any other position.
Ignition Accessory Signal	Ignition is in OFF/RUN/CRANK position	Off
Ignition 1 Signal	-	Volts	This parameter displays the voltage measured at the ignition 1 circuit of the control module. Voltage is applied to the control module when the ignition switch is in the ignition 1 position. The scan tool will display a higher value with a higher system voltage, and a lower value with a lower system voltage.
Injector 1 Disabled Due to Misfire	-	Yes	This parameter displays the status of the fuel injector driver by the engine control module. The scan tool will display Yes if the fuel injector is being disabled due to a misfire detection. The scan tool will display No if the fuel injector is not being disabled by the engine control module due to a misfire.
Injector 1 Disabled Due to Misfire	-	No
Injector 2 Disabled Due to Misfire	-	Yes
Injector 2 Disabled Due to Misfire	-	No
Injector 3 Disabled Due to Misfire	-	Yes
Injector 3 Disabled Due to Misfire	-	No
Injector 4 Disabled Due to Misfire	-	Yes
Injector 4 Disabled Due to Misfire	-	No
Injector 5 Disabled Due to Misfire	-	Yes
Injector 5 Disabled Due to Misfire	-	No
Injector 6 Disabled Due to Misfire	-	Yes
Injector 6 Disabled Due to Misfire	-	No
Injector 7 Disabled Due to Misfire	-	Yes
Injector 7 Disabled Due to Misfire	-	No
Injector 8 Disabled Due to Misfire	-	Yes
Injector 8 Disabled Due to Misfire	-	No
Injector PWM Bank 1	-	ms	The scan tool displays in milliseconds. This parameter is the average time the control module turns on each fuel injector on that bank. The scan tool will display a higher value with a longer pulse width, or a lower value with a shorter pulse width.
Injector PWM Bank 2	-	ms	The scan tool displays in milliseconds. This parameter is the average time the control module turns on each fuel injector on that bank. The scan tool will display a higher value with a longer pulse width, or a lower value with a shorter pulse width.
Intake Manifold Pressure	-	kPa	This parameter displays the pressure difference between the MAP and the barometric pressure (BARO) as calculated by the control module. The scan tool will display a higher value during high vacuum conditions, such as idle or deceleration. The scan tool will display a lower value during low vacuum conditions, such as wide open throttle or low load cruising.
Knock Detected Cylinder 1	-	Yes	This parameter displays the status of each cylinder for knock detection by the control module. The scan tool will display Yes if a knock condition has been detected related to that cylinder combustion event. The scan tool will display No if there is no knock condition detected related to that cylinder combustion event.
Knock Detected Cylinder 1	-	No
Knock Detected Cylinder 2	-	Yes
Knock Detected Cylinder 2	-	No
Knock Detected Cylinder 3	-	Yes
Knock Detected Cylinder 3	-	No
Knock Detected Cylinder 4	-	Yes
Knock Detected Cylinder 4	-	No
Knock Detected Cylinder 5	-	Yes
Knock Detected Cylinder 5	-	No
Knock Detected Cylinder 6	-	Yes
Knock Detected Cylinder 6	-	No
Knock Detected Cylinder 7	-	Yes
Knock Detected Cylinder 7	-	No
Knock Detected Cylinder 8	-	Yes
Knock Detected Cylinder 8	-	No
Knock Retard	-	°	The scan tool displays in ° (degrees). This parameter indicates the amount of timing retard commanded by the control module. The scan tool will display a lower value if no knock is detected, and a higher value as more knock is detected and the control module retards the ignition timing.
Long Term Fuel Trim Bank 1	-	%	The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the engine control module. The scan tool will display more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.
Long Term Fuel Trim Bank 2	-	%	The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the engine control module. The scan tool will display of more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.
Loop Status	-	Open	The scan tool displays Open or Closed. The scan tool displays Closed if the engine control module is controlling the fuel delivery according to the heated oxygen sensor (HO2S) voltages. The scan tool displays Open if the engine control module is not adjusting for the HO2S inputs. In the Open loop the engine control module bases fuel delivery on the throttle position and the mass airflow sensor inputs.
Loop Status	-	Closed
Low EOP Indicator Command (Engine Oil Pressure)	-	On	This parameter displays the commanded state of the low engine oil pressure lamp control circuit by the engine control module. The scan tool will display On if the lamp is commanded On by the engine control module. The scan tool will display Off if the lamp is not being commanded by the engine control module.
Low EOP Indicator Command (Engine Oil Pressure)	-	Off
Low Engine Oil Level Indicator Command	-	On	This parameter displays the commanded state of the low engine oil level lamp control circuit by the engine control module. The scan tool will display On if the lamp is commanded On by the control module. The scan tool will display Off if the lamp is not being commanded by the engine control module.
Low Engine Oil Level Indicator Command	-	Off
MAF Sensor	-	g/s	The scan tool displays g/s. This parameter indicates the airflow into the engine as calculated by the engine control module based on mass airflow (MAF) sensor inputs. The scan tool will display a high value at higher engine speeds, and a low value at idle.
MAP Sensor	-	kPa	The scan tool displays kPa. This parameter displays the pressure inside of the intake manifold as calculated by the engine control module based on the input from the MAP sensor. The scan tool will display a high value at cruising speed or wide open throttle (WOT). The scan tool will display a low value at idle speed.
MIL Circuit Status	-	OK	This parameter displays the status of the output driver for the malfunction indicator lamp control circuit. The scan tool will display Okay, Fault or Incomplete. The scan tool will display Pass/Fail if the circuit is operating correctly. The scan tool will display Incomplete if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
MIL Command	-	On	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 engine control module will command the MIL On when the ignition is on with the engine off in order to perform a bulb check.
MIL Command	-	Off
MIL Requested by DTC	-	Yes	This parameter indicates the reason the control module illuminated the MIL. The scan tool will display Yes when the MIL is requested as a result of an A or B type DTC. The scan tool will display No if the MIL is illuminated for another reason, such as transmission DTCs.
MIL Requested by DTC	-	No
Misfire Current Cylinder 1	-	(#)	The scan tool will display in counts. This parameter indicates the number of cylinder firing events detected as possible misfires on each cylinder during the last 200 crankshaft revolutions as calculated by the engine control module. The scan tool will display a low number for a low number of cylinder misfire events. The scan tool will display a high number for a high number of cylinder misfire events.
Misfire Current Cylinder 2	-	(#)
Misfire Current Cylinder 3	-	(#)
Misfire Current Cylinder 4	-	(#)
Misfire Current Cylinder 5	-	(#)
Misfire Current Cylinder 6	-	(#)
Misfire Current Cylinder 7	-	(#)
Misfire Current Cylinder 8	-	(#)
Misfire History Cylinder 1	-	(#)	The scan tool displays in counts. This parameter displays the total level of cylinder misfires that have been calculated for each cylinder by the engine control module. This parameter will not update or show activity until a misfire DTC has become active. The misfire history counters will update every 200 cylinder firing events.
Misfire History Cylinder 2	-	(#)
Misfire History Cylinder 3	-	(#)
Misfire History Cylinder 4	-	(#)
Misfire History Cylinder 5	-	(#)
Misfire History Cylinder 6	-	(#)
Misfire History Cylinder 7	-	(#)
Misfire History Cylinder 8	-	(#)
Output Shaft Speed Sensor	-	RPM	This parameter displays the rotational speed of the transmission output shaft. The scan tool displays output shaft speed as revolutions per minute (RPM).
PNP Switch (If equipped)	Gear selector is in Park position	P/N	The scan tool displays the position of the transmission selection as Park/Neutral or In Gear.
	Gear selector is in Reverse position	In Gear
	Gear selector is in Neutral position	P/N
	Gear selector is in Drive position	In Gear
Power Enrichment	-	Active	Scan tool displays Active or Inactive. Active displayed indicates that the engine control module has detected conditions appropriate to operate in power enrichment mode. The engine control module commands power enrichment mode when a large increase in throttle position and load is detected. While in power enrichment, the engine control module will increase the amount of fuel delivered by entering open loop and increasing the injector pulse width.
Power Enrichment	-	Inactive
Reduced Engine Power	-	Active	The scan tool displays Active or Inactive. The scan tool displays Active when the engine control module receives a signal from the throttle actuator control (TAC) module that a TAC system fault is occurring. The scan tool displays inactive when the engine is operating normally.
Reduced Engine Power	-	Inactive
Remote Vehicle Start (RVS) Disable 1-8 History	None		These parameters show the last 8 reasons the ECM disabled remote vehicle start (RVS). Reason 1 is the most current reason.
Remote Vehicle Start (RVS) Request Signal	Off		This parameter indicates the state of the request received over serial communication from the remote vehicle start (RVS) system to start the vehicle in remote mode.
Remote Vehicle Start (RVS) Request Signal	On
Skip Shift Lamp Command (If equipped)	-	On
Skip Shift Lamp Command (If equipped)	-	Off
Spark	-	° CA	This parameter is the desired spark advance calculated by the control module based on many sensor inputs. The scan tool will display a lower value at idle speed, and a higher value under heavy acceleration and load conditions.
Short Term Fuel Trim Bank 1	-	%	The scan tool displays percentage. This parameter indicates the current short term fuel trim for this bank. The scan tool will display a value higher than 0 if the time is being added to the injector pulse width, increasing the amount of fuel to that bank of the engine to compensate for a lean condition sensed by the oxygen sensors on that bank. The scan tool will display a value lower than 0 if time is being subtracted from the injector pulse width, reducing the amount of fuel to the engine to compensate for a rich condition sensed by the oxygen sensors on that bank. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.
Short Term Fuel Trim Bank 2	-	%	The scan tool displays percentage. This parameter indicates the current short term fuel trim for this bank. The scan tool will display a value higher than 0 if the time is being added to the injector pulse width, increasing the amount of fuel to that bank of the engine to compensate for a lean condition sensed by the oxygen sensors on that bank. The scan tool will display a value lower than 0 if time is being subtracted from the injector pulse width, reducing the amount of fuel to the engine to compensate for a rich condition sensed by the oxygen sensors on that bank. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.
Start-Up ECT	-	° C	This parameter indicates the engine coolant temperature at start-up, as calculated by the engine control module based on the input from the engine coolant temperature sensor. The scan tool will display a higher value at higher engine start-up temperatures, and a lower value at lower start-up temperatures.
Start-Up IAT	-	° C	Indicates the intake air temperature (IAT) at the time that the vehicle was started. Used to determine if the last start-up was a cold start. The scan tool range is -39 to +140°C (-38 to +284°F). This parameter indicates the ambient air temperature at start-up.
Starter Relay Command	-	On	This parameter displays the engine control modules commanded state of the starter motor relay control circuit.
Starter Relay Command	-	Off
Starter Relay Circuit Status	-	Okay	This parameter displays the status of the output driver for the starter relay control circuit. The scan tool will display Okay, Incomplete and Fault. The scan tool will display OK/Incomplete if the circuit is operating correctly. The scan tool will display a Fault if there is an open, short to ground, or a short to voltage on the circuit.
	-	Fault
	-	Incomplete
TAC Forced Engine Shutdown (Throttle Actuator Control)	-	Yes	This parameter indicates the status of TAC control by the control module. The scan tool will display YES if the engine has been shut down due to a throttle control fault. The scan tool will display NO if the engine has not been shut down by a throttle control fault.
TAC Forced Engine Shutdown (Throttle Actuator Control)	-	No
TAC Motor (Throttle Actuator Control)	-	Enabled	This parameter indicates the status of the TAC motor driver. The scan tool will display Enabled if TAC motor operation is allowed. The scan tool will display Disabled if the TAC motor is disabled.
TAC Motor (Throttle Actuator Control)	-	Disable
TAC Motor Command (Throttle Actuator Control)	-	0 - 100 %	This parameter indicates the required duty cycle to maintain a desired throttle position. The scan tool will display a higher value if more effort is required to move the throttle to the desired position, such as physical resistance. The scan tool will display a lower value if less effort is required to move the throttle to the desired position.
TFT sensor (If equipped)	-	°C	This parameter indicates the transmission fluid temperature measured by a sensor. In automatic transmission applications, this is based upon the transmission fluid temperature sensor input to the TCM.
TCS Torque Request Signal	-	0 - 100 %	This parameter indicates the torque requested from the engine to the transmission as calculated by the control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.
Torque Delivered Signal	-	Nm	This parameter indicates the torque delivered from the engine to the transmission as calculated by the control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.
Torque Management Spark Retard	-	°	his parameter indicates how much the ignition spark timing is being retarded to control torque by the engine control module. The scan tool will display a higher value under extreme torque control conditions such as spinning wheels. The scan tool will display a lower value under low torque control conditions such as light driving.
Total Knock Retard	-	°	This parameter indicates how much ignition spark timing is being retarded due to all control systems monitored by the engine control module. The scan tool will display a high value during extreme conditions such as high temperatures and antilock braking. The scan tool will display a lower value during lighter driving conditions.
Total Misfire	-	Count	The scan tool range is 0-255 counts. This parameter indicates the total level of misfire that has been detected on each cylinder. The misfire history counters will not update or show any activity until a misfire or DTC P0300 has become active. The misfire history counter will update every 200 cylinder firing events.
TP Desired Angle	-	0 - 100 %	This parameter indicates the desired throttle angle calculated by the TAC module as commanded by the vehicle operator. The scan tool will display a higher value when the accelerator pedal is depressed, and a lower value as the accelerator pedal is released.
TP Indicated Angle	-	0 - 100 %	This parameter displays the angle of the throttle plate as calculated by the control module using the signals from the throttle position (TP) sensor(s). The TP indicated angle is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is wide open.
TP Sensor 1 (Throttle Position)	-	Volts	The scan tool displays Volts. The scan tool displays approximately ? Volts when the ignition is on.
TP Sensor 1 Learned Minimum Position (Throttle Position)	-	Volts	This parameter displays the learned minimum voltage for TP sensor 1 as determined by the control module this ignition cycle.
TP Sensor 1 Indicated Position (Throttle Position)	-	0 - 100 %	This parameter displays the angle of the throttle position (TP) sensor 1 as calculated by the control module using the signal from the TP sensor 1. The TP sensor 1 is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is fully open.
TP Sensors 1 and 2 (Throttle Position)	-	Agree	This parameter displays the results of a control module test that compares the signals from the TP sensors 1 and 2. The scan tool will display Agree or Disagree. Agree indicates that TP sensor 1 and TP sensor 2 voltages correspond to the same throttle position. Disagree indicates that TP sensor 1 and TP sensor 2 voltages correspond to different throttle positions.
TP Sensors 1 and 2 (Throttle Position)	-	Disagree
TP Sensor 2 (Throttle Position)	-	Volts	The scan tool displays Volts. The scan tool displays approximately ? Volts when the ignition is ON.
TP Sensor 2 Learned Minimum Position (Throttle Position)	-	Volts	This parameter displays the learned minimum voltage for TP sensor 2 as determined by the control module this ignition cycle.
TP Sensor 2 Indicated Position (Throttle Position)	-	0 - 100 %	This parameter displays the angle of the TP sensor 2 as calculated by the control module using the signal from the TP sensor 2. The TP sensor 2 is a range of values indicating a low percentage when the throttle is closed to a high percentage when the throttle is fully open..
Vehicle Speed Sensor	-	Km/h (Mph)	This parameter indicates the vehicle speed calculated by the engine control module based on an input from the vehicle speed sensor (VSS). The scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.
Vehicle Speed Circuit Status	-	Okay	This parameter displays the status of the Vehicle Speed Circuit. The scan tool will display OK, Incomplete and Fault. The scan tool will display OK/Incomplete if the circuit is operating correctly.
	-	Fault
	-	Incomplete
VTD Auto Learn Timer	-	Active	The scan tool displays Active/Inactive. This parameter indicates if the control module is ready to learn the theft deterrent password. The scan tool will display active if the system is ready to learn. The scan tool will display inactive if the system has timed out or is not ready to learn the password.
VTD Auto Learn Timer	-	Inactive
VTD Fuel Disable	-	Active	This parameter Indicates if the VTD system has received proper information to enable or disable fuel. The scan tool will display Active or Inactive. The scan tool will display Active if the control module does not receive the correct password from the BCM. The scan tool will display Inactive if the control module receives the correct password from the BCM. If the system is Active, the engine will not start.
VTD Fuel Disable	-	Inactive
VTD Fuel Disable Until Ignition Off	-	On	The scan tool will display Yes or No. This parameter indicates if the VTD is disabled until the ignition is turned OFF. The scan tool will display Yes if the ignition is ON and a theft deterrent DTC is present. The scan tool will display off if the system is OK and the theft deterrent system is inactive.
VTD Fuel Disable Until Ignition Off	-	Off
VTD Fuel Enable	-	Yes	This parameter Indicates if the VTD system has received proper information to enable or disable fuel. The scan tool will display Yes or No. The scan tool will display No if the engine control module does not receive the correct password from the BCM. The scan tool will display Yes if the control module receives the correct password from the BCM. If the scan tool is displaying No, the engine will not start.
VTD Fuel Enable	-	No
VTD Password Learned	-	Yes	The scan tool displays Yes/No. This parameter indicates if the engine control module has learnt the theft deterrent password. The scan tool will display Yes if the system has learnt the password. The scan tool will display No if the system has timed out or has not learnt the password.
VTD Password Learned	-	No
Warm-ups Since DTC Cleared	-	Counts	This parameter indicates the number of warm-up cycles that have occurred since DTCs were cleared. The scan tool will display a higher counts as more warm-up cycles have occurred since the DTCs were cleared
Warm-ups without Emission Faults	-	Counts	The scan tool displays in counts. This parameter counts the number of warm-up cycles without an emission fault present. The parameter increments until a fault occurs. If a fault occurs, the counter reverts to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0.
Warm-ups without Non-Emission Faults	-	Counts	The scan tool displays in counts. This parameter counts the number of warm-up cycles without a non-emission fault present. The parameter increments until a fault occurs. If a fault occurs, the counter reverts to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0.
Wide Open Throttle	-	Yes	This parameter indicates the throttle status commanded by the engine control module. The scan tool will display Yes is the vehicle throttle is commanded to wide open. The scan tool will display No if the vehicle throttle is commanded to an amount less than 100 percent.
Wide Open Throttle	-	No

Engine Control Module Scan Tool Output Controls

Scan Tool Output Control	Additional Menu Selection(s)	Description
A/C Relay	Special Functions	The scan tool commands the air conditioning ON or OFF. ON indicates the A/C control circuit is being grounded by the control module, allowing PWM signal to the A/C compressor. OFF indicates the A/C is not being commanded on by the control module.
Cooling Fan Command	Output Controls Cooling	The scan tool commands the fan relay ON or OFF.
Cylinder Deactivation System	Cylinder Deactivation	The scan tool energizes or de-energizes all 4 VLOM solenoids for V4 or V8 mode.
Cylinder Deactivation 1	Cylinder Deactivation	The scan tool energizes or de-energizes the cylinder 1 VLOM solenoid. The commanded states include ON and OFF. The normal state is NONE.
Cylinder Deactivation 4	Cylinder Deactivation	The scan tool energizes or de-energizes the cylinder 4 VLOM solenoid. The commanded states include ON and OFF. The normal state is NONE
Cylinder Deactivation 6	Cylinder Deactivation	The scan tool energizes or de-energizes the cylinder 6 VLOM solenoid. The commanded states include ON and OFF. The normal state is NONE
Cylinder Deactivation 7	Cylinder Deactivation	The scan tool energizes or de-energizes the cylinder 7 VLOM solenoid. The commanded states include ON and OFF. The normal state is NONE.
Engine Controls Ignition Relay Command	Engine Output Controls	The scan tool commands the engine controller to turn the relay ON or OFF.
EVAP Purge Solenoid	Engine Output Controls/EVAP System	The scan tool commands the EVAP Purge Solenoid ON or OFF.
EVAP Purge/Seal	Engine Output Controls/EVAP System	The scan tool simultaneously activates the purge solenoid in 10 percent increments from 0 to 100 percent and the vent solenoid. The device control will be aborted and inhibited if the FTP sensor exceeds -22 mm Hg (-11 in H2O).
EVAP Vent Solenoid	Engine Output Controls/EVAP System	The scan tool Activates the vent solenoid. The device control will be aborted and inhibited if the FTP sensor exceeds -22 mm Hg (-11 in H2O).
Fan Relay 1	Engine Output Controls	The scan tool displays a commanded state of OFF or ON. This allows you to communicate with the ECM and activate or deactivate the cooling fan 1 relay, manually turning both low speed fans ON and OFF.
Fan Relay 2 and 3	Engine Output Controls	The scan tool displays a commanded state of OFF or ON. This allows you to activate or deactivate the cooling fan series/parallel relay and the cooling fan 2 relay. The RH cooling fan 2 turns ON and OFF in high speed.
Fan Relay 1, 2 and 3	Engine Output Controls	The scan tool displays a commanded state of OFF or ON. This allows you to activate or deactivate all of the cooling fan relays. Both cooling fans turn ON and OFF in high speed.
Fuel Pump Relay Command	Engine Output Controls/Fuel Pump	The scan tool Activates the fuel pump relay for 2 seconds. Also turns fuel pump ON and OFF while engine is running.
GEN L-Terminal	Engine Output Controls	The scan tools commanded states are ON or OFF. Selecting OFF commands the ECM to turn OFF the generator and stop generating an output voltage.
HO2S Bank 1 Sensor 1 Heater	Engine Output Controls/Heated Oxygen Sensors	The scan tool commands the HO2S heater ON, 0-100 percent in 10 percent increments while the engine is running.
HO2S Bank 1 Sensor 2 Heater	Engine Output Controls/Heated Oxygen Sensors	The scan tool commands the HO2S heater ON, 0-100 percent in 10 percent increments while the engine is running.
HO2S Bank 2 Sensor 1 Heater	Engine Output Controls/Heated Oxygen Sensors	The scan tool commands the HO2S heater ON, 0-100 percent in 10 percent increments while the engine is running.
HO2S Bank 2 Sensor 2 Heater	Engine Output Controls/Heated Oxygen Sensors	The scan tool commands the HO2S heater ON, 0-100 percent in 10 percent increments while the engine is running.
Idle Spark	Engine Output Controls/Spark Control	The scan tool disables and enables idle spark advance with the engine running.
Loop Status	Engine Output Controls	The scan tool controls the system loop status. The commanded states include None, Open, or Closed. The normal commanded state is None. When commanded Open or Closed, the system remains in the commanded state until cancelled by the scan tool.
Malfunction Indicator Lamp	Engine Output Controls	The scan tool activates the malfunction indicator lamp (MIL). The commanded states include ON and OFF. The normal state is NONE. The MIL will remain illuminated until cancelled by the scan tool.
Oil Life Reset	Oil Life Reset	The engine oil remaining life is determined from an algorithm based upon the effective engine revolutions and the distance driven since the last oil change. This output control may be used to reset the engine oil remaining life.
Spark Retard	Engine Output Controls/Spark Control	The scan tool will command an increase or decrease in the amount of spark retard in 1 degree increments, within a range of 1-10 degrees. The degrees of spark retard will remain in the commanded state until cancelled by the scan tool. The normal commanded states is NONE.
Starter Relay	Engine Output Controls	This output control is used to override the state of the Starter Relay output. Fuel and spark are disabled to prevent the engine from starting if the starter relay output is commanded ON.