Engine 1 Data Definintions

Engine Speed - Range 0-16384 RPM: The VCM computes the Engine Speed from the fuel control reference input. The speed should remain close to the desired idle under the various engines loads with the engine idling.

Desired Idle - Range 0-3187 RPM: The VCM commands the desired IAC. The VCM compensates for various engine loads in order to maintain the desired idle speed.

ECT - Range -40°-215°C (-40°-419°F): The Engine Coolant Temperature (ECT) sensor is mounted in the intake the intake manifold. The ECT sends the engine temperature information to the VCM. The VCM supplies 5 volts to the ECT sensor circuit. The sensor is a thermistor which changes the internal resistance as the temperature changes. When the sensor is cold meaning the internal resistance is high, the VCM monitors a high voltage signal. The VCM interprets the high voltage signal as a cold engine. As the sensor warms meaning the internal resistance decreases, the voltage signal decreases. The VCM interprets the lower resistance as a warm engine.

Start Up ECT - Range -40°-215°C (-40°-419° F): When the engine is started, the VCM records the engine coolant temperature. The VCM uses the recorded temperature in order to calculate the time to a Closed Loop.

ECT Sensor - Range (0.0-5.0 volts): The Engine Coolant Temperature (ECT) sensor is mounted in the intake the intake manifold. The ECT sends the engine temperature information to the VCM. The VCM supplies 5 volts to the ECT sensor circuit. The sensor is a thermistor which changes the internal resistance as the temperature changes. When the sensor is cold meaning the internal resistance is high, the VCM monitors a high voltage signal. The VCM interprets the high voltage signal as a cold engine. As the sensor warms meaning the internal resistance decreases, the voltage signal decreases. The VCM interprets the lower resistance as a warm engine.

Intake Air Temperature (IAT) Sensor - (0.0-5.0 volts): The VCM converts the resistance of the Intake Air Temperature (IAT) sensor to degrees. The VCM uses the intake air temperature in order to adjust the fuel delivery and the spark timing according to the incoming air density.

IAT - Range (-40°-151°C): The VCM converts the resistance of the Intake Air Temperature (IAT) sensor to degrees. The VCM uses the intake air temperature in order to adjust the fuel delivery and the spark timing according to the incoming air density.

Air Fuel Ratio - Range (0.0:1-25.5:1): The air to fuel ratio is based on the Oxygen sensor (HO2S) inputs. The VCM uses the fuel trim to adjust the fueling in order to attempt to maintain an air fuel ratio of 14.7:1. A lower number indicates a richer air fuel mixture. A higher number indicates a leaner mixture.

Manifold Absolute Pressure (MAP) Sensor - Range (0.0-5.0 volts): The MAP sensor produces a low signal voltage when the manifold pressure is low. A low manifold pressure means a high vacuum. The MAP sensor produces a high signal voltage when the manifold pressure is high. A high manifold pressure means a low vacuum. With the ignition ON and the engine stopped, the manifold pressure equals the atmospheric pressure causing the signal voltage to be high. The VCM uses this information as an indication of the vehicle's altitude. This information is referred to as the BARO. Comparison of this BARO reading with a known good vehicle with the same sensor is a good way to check accuracy of a suspect sensor. The readings should read the same +0.4 volt.

Barometric Pressure (BARO) - Range (0.0-5.0 volts): The BARO represents a measurement of the barometric air pressure. This measurement is determined by using the Manifold Air Pressure (MAP) sensor in order to determine the manifold vacuum. Since the barometric air pressure depends on the altitude, the measurement may vary from 100 kPa (sea level) to 60 kPa (14,000 ft.).

Manifold Absolute Pressure (MAP) - Range (10 kPa-104 kPa): The Manifold Absolute Pressure (MAP) sensor measures the change in the intake manifold pressure from the engine load and the speed changes. As the intake manifold pressure increases, the air density in the intake manifold also increases. Additional fuel is required.

Barometric Pressure (BARO) Sensor - Range (0 kPa-62 kPa): The VCM determines the displayed BARO reading from the MAP sensor at the ignition ON and the engine OFF and the WOT conditions. The BARO reading displayed represents the barometric pressure. The VCM uses the displayed BARO readings in order to compensate for the altitude differences.

Throttle Position (TP) Sensor - Range (0.0-5.0 volts): The VCM uses the Throttle Position in order to determine the amount of throttle demanded by the operator of the vehicle. The TP sensor reads between 0.36-0.96 volts at idle to above 4.0 volts at Wide Open Throttle (WOT).

TP Angle - Range (0-100%): The VCM computes the TP Angle from the TP signal voltage input. The TP Angle should read 0% at idle. AT 0 %, the TP voltage will read below 0.90 volts. The TP Angle should read 100% at Wide Open Throttle.

Long Term Fuel Trim FT Bn 1 - Range (0-255): The Long Term Fuel Trim (FT) is derived from the short term fuel trim value. The VCM uses the Long Term Fuel Trim for the long-term correction of the fuel delivery. A value of 128 counts (0% indicates that the fuel delivery requires no compensation to maintain a 14.7:1 air to fuel ratio. A value below 128 counts means that the fuel system is too rich and the fuel delivery is being reduced, decreased injector pulse width. A value above 128 counts indicates that a lean condition exists. The VCM compensates by adding fuel, increased injector pulse width.

Long Term Fuel Trim FT Bn 2 - Range (0-255): The Long Term Fuel Trim (FT) is derived from the short term fuel trim value. The VCM uses the Long Term Fuel Trim for the long-term correction of the fuel delivery. A value of 128 counts (0% indicates that the fuel delivery requires no compensation to maintain a 14.7:1 air to fuel ratio. A value below 128 counts means that the fuel system is too rich and the fuel delivery is being reduced, decreased injector pulse width. A value above 128 counts indicates that a lean condition exists. The VCM compensates by adding fuel, increased injector pulse width.

Short Term Fuel Trim FT Bn 1 - Range (0-255): The short term fuel trim was formerly the fuel integrator. The short term fuel trim represents a short-term correction to the fuel delivery by the VCM in response to the amount of time the HO2S voltage spends above or below the 450 mV threshold. A HO2S voltage reading below 450 mV indicates a lean air to fuel mixture. If the HO2S voltage has mainly been below 450 mV threshold, the short term fuel trim increases in order to tell the VCM to add fuel. If the HO2S voltage stays mainly above the threshold, the VCM reduces the fuel delivery in order to compensate for the indicated rich condition.

Short Term Fuel Trim FT Bn 2 - Range (0-255): The short term fuel trim was formerly the fuel integrator. The short term fuel trim represents a short-term correction to the fuel delivery by the VCM in response to the amount of time the HO2S voltage spends above or below the 450 mV threshold. A HO2S voltage reading below 450 mV indicates a lean air to fuel mixture. If the HO2S voltage has mainly been below 450 mV threshold, the short term fuel trim increases in order to tell the VCM to add fuel. If the HO2S voltage stays mainly above the threshold, the VCM reduces the fuel delivery in order to compensate for the indicated rich condition.

FT Cell Bn 1 - Range (0-255): The Fuel Trim Cell is dependent upon the engine speed and the MAP sensor readings. A plot of the RPM vs the MAP sensor readings. A plot of the RPM vs the MAP is broken into 22 cells. The Fuel Trim Cell indicates which cell is currently active.

FT Cell Bn 2 - Range (0-255): The Fuel Trim Cell is dependent upon the engine speed and the MAP sensor readings. A plot of the RPM vs the MAP sensor readings. A plot of the RPM vs the MAP is broken into 22 cells. The Fuel Trim Cell indicates which cell is currently active.

IAC Position - Range (0-255): The scan tool displays in counts the Idle Air Control (IAC) pintle position commanded from the VCM. The greater the number of counts, the greater the command idle speed (air passages opened) is. The idle air control should respond fairly quickly to changes in the engine load in order to maintain the desired idle RPM.

Desired IAC - Range (0-255): The desired IAC indicates the desired IAC position.

Knock (KS) Sensor Activity - Range (0-255 counts): The Knock Sensor Activity indicates the amount of spark knock detected by the VCM.

Knock (KS) Sensor - Range (0.0-5.0 volts): The Knock Sensor indicates the amount of engine knock detected in volts.

Spark Advance - Range (-96° to -255°): The Spark Advance is a display of the spark advance calculation which the VCM is programming into the ignition system. The VCM computes the desired spark advance using data such as the engine temperature, the RPM, the load, the vehicle speed, and the operating mode.

KS Retard - Range (0.0-90°): The KS Retard indicates the amount of spark advances being removed in order to diminish the spark knock.

Cam Retard: The Cam Retard indicates the difference between the CMP sensor and the CKP sensor in degrees.

Engine Load - Range (0-100%): The Engine Load indicates the engine load based on the Manifold Absolute Pressure. The higher the percentage, the greater the load the engine is under.

MAF - Range 0-512 g/s: The VCM converts the Mass Air Flow sensor input signal into grams per second. The MAF indicates the amount of air entering the engine.

DTC Counter - Range (0-255): The DTC counter indicates the total number of current Diagnostic Trouble Codes (DTCs) set. This does not necessarily mean that the Malfunction Indicator Lamp (MIL) is illuminated.

Engine Run Time - Range (0:00:00-18:12:15) Hours: Minutes: Seconds: The Engine Run Time is a measure of how long the engine has run during this ignition cycle. When the engine stops running, the timer resets to zero.

Engine 2 Data Definition

Engine Speed - Range 0-16384 RPM: The VCM computes the Engine Speed from the fuel control reference input. The speed should remain close to the desired idle under the various engines loads with the engine idling.

Desired Idle - Range 0-3187 RPM: The VCM commands the desired IAC. The VCM compensates for various engine loads in order to maintain the desired idle speed.

IAC Position - Range (0-255): The scan tool displays in counts the Idle Air Control (IAC) pintle position commanded from the VCM. The greater the number of counts, the greater the command idle speed (air passages opened) is. The idle air control should respond fairly quickly to changes in the engine load in order to maintain the desired idle RPM.

Desired IAC - Range (0-255): The desired IAC indicates the desired IAC position.

Front HO2S - Range (Ready - Not Ready): The Front HO2S indicates the status of the HO2S (Bank 1 Sensor 1).

Rear HO2S - Range (Ready - Not Ready): The Rear HO2S indicates the status of the HO2S (Bank 2 Sensor 1).

HO2S BN 1 Sen. 1 - Range (0-1107 mV): The HO2S BN 1 Sen. 1 indicates the activity of the HO2S (Bank 1 Sensor 1).

HO2S BN 2 Sen. 1 - Range (0-1107 mV): The HO2S BN 2 Sen. 1 indicates the activity of the HO2S (Bank 2 Sensor 1).

HO2S BN 1 Sen. 2 - Range (0-1107 mV): The HO2S BN 1 Sen. 2 indicates the activity of the HO2S (Bank 1 Sensor 2).

HO2S BN 1 Sen. 3 - Range (0-1107 mV): The HO2S BN 1 Sen. 3 indicates the activity of the HO2S (Bank 1 Sensor 3).

HO2S Xcounts Bn 1 - Range (0-255): The HO2S Xcounts Bn 1 indicates the number of times that the HO2S (Bank 1 Sensor 1) crosses a threshold.

HO2S Xcounts Bn 2 - Range (0-255): The HO2S Xcounts Bn indicates the number of times that the HO2S (Bank 2 Sensor 1) crosses a threshold.

Long Term Fuel Trim FT Bn 1 - Range (0-255): The Long Term Fuel Trim (FT) is derived from the short term fuel trim value. The VCM uses the Long Term Fuel Trim for the long-term correction of the fuel delivery. A value of 128 counts (0% indicates that the fuel delivery requires no compensation to maintain a 14.7:1 air to fuel ratio. A value below 128 counts means that the fuel system is too rich and the fuel delivery is being reduced, decreased injector pulse width. A value above 128 counts indicates that a lean condition exists. The VCM compensates by adding fuel, increased injector pulse width.

Long Term Fuel Trim FT Bn 2 - Range (0-255): The Long Term Fuel Trim (FT) is derived from the short term fuel trim value. The VCM uses the Long Term Fuel Trim for the long-term correction of the fuel delivery. A value of 128 counts (0% indicates that the fuel delivery requires no compensation to maintain a 14.7:1 air to fuel ratio. A value below 128 counts means that the fuel system is too rich and the fuel delivery is being reduced, decreased injector pulse width. A value above 128 counts indicates that a lean condition exists. The VCM compensates by adding fuel, increased injector pulse width.

Short Term Fuel Trim FT Bn 1 - Range (0-255): The short term fuel trim was formerly the fuel integrator. The short term fuel trim represents a short-term correction to the fuel delivery by the VCM in response to the amount of time the HO2S voltage spends above or below the 450 mV threshold. A HO2S voltage reading below 450 mV indicates a lean air to fuel mixture. If the HO2S voltage has mainly been below 450 mV threshold, the short term fuel trim increases in order to tell the VCM to add fuel. If the HO2S voltage stays mainly above the threshold, the VCM reduces the fuel delivery in order to compensate for the indicated rich condition.

Short Term Fuel Trim FT Bn 2 - Range (0-255): The short term fuel trim was formerly the fuel integrator. The short term fuel trim represents a short-term correction to the fuel delivery by the VCM in response to the amount of time the HO2S voltage spends above or below the 450 mV threshold. A HO2S voltage reading below 450 mV indicates a lean air to fuel mixture. If the HO2S voltage has mainly been below 450 mV threshold, the short term fuel trim increases in order to tell the VCM to add fuel. If the HO2S voltage stays mainly above the threshold, the VCM reduces the fuel delivery in order to compensate for the indicated rich condition.

FT Cell Bn 1 - Range (0-255): The Fuel Trim Cell is dependent upon the engine speed and the MAP sensor readings. A plot of the RPM vs the MAP sensor readings. A plot of the RPM vs the MAP is broken into 22 cells. The Fuel Trim Cell indicates which cell is currently active.

FT Cell Bn 2 - Range (0-255): The Fuel Trim Cell is dependent upon the engine speed and the MAP sensor readings. A plot of the RPM vs the MAP sensor readings. A plot of the RPM vs the MAP is broken into 22 cells. The Fuel Trim Cell indicates which cell is currently active.

Rich/Lean Bn 1 - (Rich/Lean): The Rich/Lean Bn 1 indicates the condition of the exhaust gases in bank 1.

Rich/Lean Bn 2 - (Rich/Lean): The Rich/Lean Bn 2 indicates the condition of the exhaust gases in bank 2.

Loop Status - Range (Open/Close): The Loop Status indicates what mode of operation the VCM is in.

CL Since Restart - Range (Yes/No): The CL Since Restart indicates if the system has gone into a Closed Loop operation since the driver started the engine.

ECT - Range -40°-215°C (-40°-419°F): The Engine Coolant Temperature (ECT) sensor is mounted in the intake the intake manifold. The ECT sends the engine temperature information to the VCM. The VCM supplies 5 volts to the ECT sensor circuit. The sensor is a thermistor which changes the internal resistance as the temperature changes. When the sensor is cold meaning the internal resistance is high, the VCM monitors a high voltage signal. The VCM interprets the high voltage signal as a cold engine. As the sensor warms meaning the internal resistance decreases, the voltage signal decreases. The VCM interprets the lower resistance as a warm engine.

Start Up ECT - Range -40°-215°C (-40°-419°F): When the engine is started, the VCM records the engine coolant temperature. The VCM uses the recorded temperature in order to calculate the time to a Closed Loop.

Ignition 1 - Range (0.0-25.5:1): The Ignition 1 indicates the condition of the ignition input to the VCM.

Air Fuel Ratio - Range (0.0:1-25.5:1): The Air to Fuel Ratio indicates the calculates Air to Fuel ratio that the VCM is commanding.

MAF - Range 0-512 g/s: The VCM converts the Mass Air Flow sensor input signal into grams per second. The MAF indicates the amount of air entering the engine.

DTC Counter - Range (0-255): The DTC counter indicates the total number of current Diagnostic Trouble Codes (DTCs) set. This does not necessarily mean that the Malfunction Indicator Lamp (MIL) is illuminated.

Engine Run Time - Range (0:00:00-18:12:15) Hours: Minutes: Seconds: The Engine Run Time is a measure of how long the engine has run during this ignition cycle. When the engine stops running, the timer resets to zero.

Engine 3 Data Definitions

Engine Speed - Range 0-16384 RPM: The VCM computes the Engine Speed from the fuel control reference input. The speed should remain close to the desired idle under the various engines loads with the engine idling.

Desired Idle - Range 0-3187 RPM: The VCM commands the desired IAC. The VCM compensates for various engine loads in order to maintain the desired idle speed.

EVAP Duty Cycle - Range (0-100%): The EVAP Duty Cycle indicates the EGR duty cycle that the VCM is commanding.

Air/Fuel Ratio - Range (0.0:1-25.5:1): The Air/Fuel Ratio indicates the calculated air to fuel ratio that the VCM is commanding.

Actual EGR Position - Range (0-100%): The Actual EGR Position indicates the actual EGR position in a percentage.

Desired EGR Position - Range (0-199.9%): The Desired EGR Position indicates the desired EGR position in a percentage.

EGR Sensor - Range (0.00-5.00 volts): The EGR Sensor indicates the actual EGR position in voltage.

IAC Position - Range (0-255): The scan tool displays in counts the Idle Air Control (IAC) pintle position commanded from the VCM. The greater the number of counts, the greater the command idle speed (air passages opened) is. The idle air control should respond fairly quickly to changes in the engine load in order to maintain the desired idle RPM.

ECT - Range -40°-215°C (-40°-419°F): The Engine Coolant Temperature (ECT) sensor is mounted in the intake the intake manifold. The ECT sends the engine temperature information to the VCM. The VCM supplies 5 volts to the ECT sensor circuit. The sensor is a thermistor which changes the internal resistance as the temperature changes. When the sensor is cold meaning the internal resistance is high, the VCM monitors a high voltage signal. The VCM interprets the high voltage signal as a cold engine. As the sensor warms meaning the internal resistance decreases, the voltage signal decreases. The VCM interprets the lower resistance as a warm engine.

Start Up ECT - Range -40°-215°C (-40°-419°F): When the engine is started, the VCM records the engine coolant temperature. The VCM uses the recorded temperature in order to calculate the time to a Closed Loop.

Ignition 1 - Range (0.0-25.5:1): The Ignition 1 indicates the condition of the ignition input to the VCM.

IAT - Range (-40°-151°C): The VCM converts the resistance of the Intake Air Temperature (IAT) sensor to degrees. The VCM uses the intake air temperature in order to adjust the fuel delivery and the spark timing according to the incoming air density.

Trans. Range: The Trans. Range indicates the current drive gear

A/B/C Range - Range (On/Off): The A/B/C Range indicates the current state of the transmission range switch.

Cruise Mode - Range (Yes/No): The Cruise Mode indicates if the driver has requested the cruise control.

TCC Enable - Range (Yes/No): The TCC Enable indicates the status of the TCC enable output.

MPH - km/h - Range (0-255): The MPH - km/h indicates in MPH and in km/h how fast the drive wheels are turning.

Brake Switch - Range (Open/Closed): The Brake Switch indicates the status of the brake switch.

Decel Fuel Mode - Range (Yes/No): The Decel Fuel Mode indicates if the VCM is in a Decel Fuel Mode.

Spark Control - Range (Advance/Retard): The Spark Control indicates if the VCM is commanding the spark advance or the spark retard.

Cam Retard - Range (2039-2040): The Cam Retard indicates the amount of the Camshaft Position sensor to the Crankshaft Position sensor off set.

4 WD - Range (Yes/No): The 4 WD indicates if the 4 wheel drive is active.

4 WD Low - Range (Yes/No): The 4 WD Low indicates if the 4 wheel drive low is active.

Ignition 1 On - Range (Yes/No) : The Ignition 1 On indicates the condition of the ignition input to the VCM.

Ignition 1 Low - Range (Yes/No): The Ignition 1 Low indicates the condition of the ignition input to the VCM.

Ignition 1 High - Range (Yes/No): The Ignition 1 High indicates the conditions of the ignition input to the VCM.

Power Enrichment - Range (Yes/No): The Power Enrichment indicates if the Power Enrichment mode is active

A/C Status - Range (Yes/No): The A/C Status indicates the status of the A/C system to the VCM.

A/C Request On - Range (Yes/No): The A/C Request On indicates if the driver has requested the A/C.

A/C Relay - Range (Yes/No): The A/C Relay indicates the state of the A/C relay control circuit.

A/C Engaged - Range (Yes/No): The A/C Engaged indicates if the A/C is engaged when the VCM commands the A/C on.

DTC Counter - Range (0-255): The DTC counter indicates the total number of current Diagnostic Trouble Codes (DTCs) set. This does not necessarily mean that the Malfunction Indicator Lamp (MIL) is illuminated.

Engine Run Time - Range (0:00:00-18:12:15) Hours: Minutes: Seconds: The Engine Run Time is a measure of how long the engine has run during this ignition cycle. When the engine stops running, the timer resets to zero.

Engine 4 Data Definitions

Engine Speed - Range 0-16384 RPM: The VCM computes the Engine Speed from the fuel control reference input. The speed should remain close to the desired idle under the various engines loads with the engine idling.

Desired Idle - Range 0-3187 RPM: The VCM commands the desired IAC. The VCM compensates for various engine loads in order to maintain the desired idle speed.

IAC Position - Range (0-255): The scan tool displays in counts the Idle Air Control (IAC) pintle position commanded from the VCM. The greater the number of counts, the greater the command idle speed (air passages opened) is. The idle air control should respond fairly quickly to changes in the engine load in order to maintain the desired idle RPM.

Desired IAC - Range (0-255): The desired IAC indicates the desired IAC position.

Inj. Avg. Bank 1 - Range (0-499 ms): The Inj. Avg. Bank 1 indicates the injector on time that the VCM is commanding.

Inj. Avg. Bank 2 - Range (0-499 ms): The Inj. Avg. Bank 2 indicates the injector on time that the VCM is commanding.

Engine Load - Range (0-100%): The Engine Load indicates the engine load based on the Manifold Absolute Pressure. The higher the percentage, the greater the load the engine is under.

MAF - Range 0-512 g/s: The VCM converts the Mass Air Flow sensor input signal into grams per second. The MAF indicates the amount of air entering the engine.

Throttle Position (TP) Sensor - Range (0.0-5.0 volts): The VCM uses the Throttle Position in order to determine the amount of throttle demanded by the operator of the vehicle. The TP sensor reads between 0.36-0.96 volts at idle to above 4.0 volts at Wide Open Throttle (WOT).

TP Angle - Range (0-100%): The VCM computes the TP Angle from the TP signal voltage input. The TP Angle should read 0% at idle. AT 0 %, the TP voltage will read below 0.90 volts. The TP Angle should read 100% at Wide Open Throttle.

Manifold Absolute Pressure (MAP) Sensor - Range (0.0-5.0 volts): The MAP sensor produces a low signal voltage when the manifold pressure is low. A low manifold pressure means a high vacuum. The MAP sensor produces a high signal voltage when the manifold pressure is high. A high manifold pressure means a low vacuum. With the ignition ON and the engine stopped, the manifold pressure equals the atmospheric pressure causing the signal voltage to be high. The VCM uses this information as an indication of the vehicle's altitude. This information is referred to as the BARO. Comparison of this BARO reading with a known good vehicle with the same sensor is a good way to check accuracy of a suspect sensor. The readings should read the same +0.4 volt.

Barometric Pressure (BARO) - Range (0.0-5.0 volts): The BARO represents a measurement of the barometric air pressure. This measurement is determined by using the Manifold Air Pressure (MAP) sensor in order to determine the manifold vacuum. Since the barometric air pressure depends on the altitude, the measurement may vary from 100 kPa (sea level) to 60 kPa (14,000 ft.).

Manifold Absolute Pressure (MAP) - Range (10 kPa-104 kPa): The Manifold Absolute Pressure (MAP) sensor measures the change in the intake manifold pressure from the engine load and the speed changes. As the intake manifold pressure increases, the air density in the intake manifold also increases. Additional fuel is required.

Barometric Pressure (BARO) Sensor - Range (0 kPa-62 kPa): The VCM determines the displayed BARO reading from the MAP sensor at the ignition ON and the engine OFF and the WOT conditions. The BARO reading displayed represents the barometric pressure. The VCM uses the displayed BARO readings in order to compensate for the altitude differences.

EVAP Duty Cycle - Range (0-100%): The EVAP Duty Cycle indicates the EGR duty cycle that the VCM is commanding.

Air/Fuel Ratio - Range (0.0:1-25.5:1): The Air/Fuel Ratio indicates the calculated air to fuel ratio that the VCM is commanding.

Actual EGR Position - Range (0-100%): The Actual EGR Position indicates the actual EGR position in a percentage.

Desired EGR Position - Range (0-199.9%): The Desired EGR Position indicates the desired EGR position in a percentage.

EGR Sensor - Range )0.00-5.00 volts): The EGR Sensor indicates the actual EGR position in voltage.

Cam Retard - Range (2039-2040): The Cam Retard indicates the amount of the Camshaft Position sensor to the Crankshaft Position sensor off set.

Spark Advance - Range (-96° to -255°): The Spark Advance is a display of the spark advance calculation which the VCM is programming into the ignition system. The VCM computes the desired spark advance using data such as the engine temperature, the RPM, the load, the vehicle speed, and the operating mode.

KS Retard - Range (0.0-90°): The KS Retard indicates the amount of spark advances being removed in order to diminish the spark knock.

DTC Counter - Range (0-255): The DTC counter indicates the total number of current Diagnostic Trouble Codes (DTCs) set. This does not necessarily mean that the Malfunction Indicator Lamp (MIL) is illuminated.

Engine Run Time - Range (0:00:00-18:12:15) Hours: Minutes: Seconds: The Engine Run Time is a measure of how long the engine has run during this ignition cycle. When the engine stops running, the timer resets to zero.