The following scan tool data definitions describe all engine related parameters available on the scan tool. The list is in alphabetical order. A given parameter may appear in any one of the data lists. In some cases, the parameter may appear more than once or in more than one data list in order to group certain related parameters together.

1-2 Sol.: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

2-3 Sol.: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

24X Crank Sensor (Data): The scan tool displays 0-1750 RPM. This parameter is engine RPM calculated from crankshaft position (CKP) sensor data. Due to the resolution of the signal, this data is limited to the idle RPM range.

A/C High Side Pressure: The scan tool displays 0-5 volts. This parameter represents the A/C refrigerant pressure sensor signal. The amount of pressure indicates the amount of load that the A/C compressor places on the engine. The powertrain control module (PCM) uses this information in order to adjust idle and to control the cooling fans.

A/C High Side Pressure: The scan tool displays -103 to +3119 kPa (-14 to +452 psi). This parameter represents the A/C refrigerant pressure sensor voltage signal converted to pressure.

A/C Off For WOT: The scan tool displays Yes or No. Yes indicates that the PCM has disabled the A/C compressor because the throttle position (TP) sensor signal is at wide open throttle (WOT).

A/C Pressure Disable: The scan tool displays Yes or No. Yes indicates that the PCM has disabled the A/C compressor due to excessive refrigerant pressure.

A/C Relay Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

A/C Relay Command: The scan tool displays On or Off. The A/C clutch represents the PCM commanded state of the A/C clutch control relay. When the scan tool indicates On, the A/C clutch should be engaged.

A/C Request Signal: The scan tool displays Yes or No. The A/C Request signal indicates the state of the A/C request input circuit from the heating ventilation and air conditioning (HVAC) controls. The PCM uses the A/C request signal in order to determine whether the A/C compressor operation is being requested.

Air Fuel Ratio: The scan tool displays the ratio of air to fuel in terms of mass. A typical ratio is 14.7:1.

AIR Pump Relay Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

AIR Pump Relay Command: The scan tool displays On or Off. When the PCM grounds the secondary air injection (AIR) pump relay control circuit, the scan tool indicates ON. When the PCM disables the ground circuit, the scan tool indicates Off.

AIR Solenoid Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

AIR Solenoid Command: The scan tool displays On or Off. When the PCM grounds the AIR pump solenoid control circuit, the scan tool indicates ON. When the PCM disables the ground circuit, the scan tool indicates Off.

BARO: The scan tool range is 10-105 kPa or 0-5 volts. The barometric pressure (BARO) reading is determined from the manifold absolute pressure (MAP) sensor signal. The PCM monitors the MAP signal during key up and wide open throttle (WOT) conditions. The barometric pressure (BARO) compensates for altitude differences.

CKP Sensor Status: The scan tool displays Angle, Time A or Time B. During normal operation the PCM calculates crankshaft position in an angle based mode using the signals from both CKP sensors. If there is a problem with one of the signals, the PCM will switch to a time based calculation and the scan tool will indicate which signal is being used.

CMP Sensor: The scan tool displays RPM. This parameter is engine RPM calculated from the CMP sensor signal.

CMP Signal Present: The scan tool displays Yes or No. This parameter indicates whether or not the PCM is receiving camshaft position (CMP) sensor pulses.

Crank Request Signal: The scan tool displays Yes or No. Yes is displayed when the key is in the Crank position.

Cruise Control Active: The scan tool displays Yes or No. Yes is displayed when the cruise control is active.

Cruise Inhibit Reason: The scan tool displays Engine Not Running, Vehicle Speed, Engine Run Time, Brake, or None. Vehicle speed indicates that the vehicle is not traveling at a high enough speed to allow the cruise control to engage. Brake indicates that the brake pedal is depressed. None indicates that the cruise control can be activated.

Cruise Inhibit Signal Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

Cruise Inhibit Signal Command: The scan tool displays On or Off. On displayed indicates that the PCM is commanding the SMCC module to inhibit cruise control operation. The scan tool should display On with park, neutral, reverse or low gear selected.

Current Gear: The scan tool displays the numbers 1, 2, 3, or 4. The PCM looks at the transaxle range position and the gear commanded by the PCM. The actual forward gear that the transaxle is in will be the lower of the two because the manual valve can override the PCM commanded gear. The scan tool displays which gear the transmission is in. The scan tool displays 9 if the transmission gear is unknown.

Cycles Of Misfire Data: The display shows counts from 0-100. This parameter displays which engine cycle of the 100 engine cycle test that the PCM is collecting data for DTC P0300.

Cylinder #1 IC Circuit Status - Cylinder #6 IC Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

Cylinder #1 Injector Circuit Status - Cylinder #6 Injector Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

Decel. Fuel Cutoff: The scan tool displays Active or Inactive. Active displayed indicates that the PCM has detected conditions appropriate to operate in Deceleration Fuel Cutoff mode. The PCM will command deceleration fuel cutoff mode when a sudden decrease in throttle position (TP) has been detected while the vehicle is traveling over 16 km/h (10 mph). While in Deceleration Fuel Cutoff mode, the PCM will decrease the amount of fuel delivered by entering Open Loop and decreasing the injector pulse width.

Desired EGR Position: The scan tool range is 0-100 percent and 0 --5 volts. These parameters represent the exhaust gas recirculation (EGR) pintle position that the PCM is commanding. Desired EGR Position should stay close to Actual EGR Position.

Desired Idle Speed: The scan tool range is 0-3187 RPM. The PCM commands the desired idle speed. The PCM compensates for various engine loads based on engine coolant temperature (ECT) in order to keep the engine at the desired speed.

Driver Module 1-4 Status: The scan tool displays Enabled, Off - High volts or Off - High Temp. This indicates the current state of each of the driver modules.

ECT: The scan tool range is -39 to +140°C (-38 to +284°F). The PCM applies 5 volts to the ECT sensor circuit. The sensor is a thermistor that changes internal resistance as temperature changes. When the sensor is cold, internal resistance high, the PCM monitors a high signal voltage and interprets the voltage as a cold engine. As the sensor warms, internal resistance decreases, the voltage signal decreases and the PCM interprets the lower voltage as a warm engine.

EGR Flow Test Count: The scan tool range is 0-255 counts. Indicates the number of EGR flow test samples collected during the current ignition cycle. The maximum number of samples allowed is 1 during normal operation. If the PCM battery feed has been disconnected or a DTC P0401 has been cleared, several EGR flow test samples will be allowed during the next ignition cycle. This is to allow repair verification during a single ignition cycle.

EGR Learned Minimum Position: The scan tool range is 0-5 volts. This parameter represents the learned voltage that the PCM uses to determine whether or not the EGR valve is fully closed

EGR Position Error: The scan tool range is -100 to +100 percent. This parameter indicates the difference between Desired EGR Position and Actual EGR Position currently being monitored by the PCM. If the EGR Position Error reaches an unacceptable level, DTC P0404 or P1404 will set.

EGR Position Sensor: The scan tool range is 0-5 volts. A low voltage indicates a fully extended pintle, closed valve. A voltage near 5 volts indicates a fully retracted pintle, open valve.

EGR Position Sensor: The scan tool range is 0-100 percent. This parameter represents the actual position of the exhaust gas recirculation (EGR) pintle in percent. 0 percent displayed indicates a fully extended pintle, EGR valve closed.

EGR Solenoid Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

EGR Solenoid Command: The scan tool range is 0-100 percent. This parameter represents the EGR valve driver pulse width modulated (PWM) signal from the PCM. A duty cycle of 0 percent indicates that no EGR flow is being commanded. A 100 percent duty cycle indicates that the PCM is commanding maximum EGR flow.

Engine Load: The scan tool range is 0-100 percent. The PCM calculates the engine load from engine speed and mass air flow (MAF) sensor readings. The engine load increases with an increase in RPM or airflow.

Engine Oil Level Switch: The scan tool displays OK or Low. The scan tool displays whether or not there is sufficient engine oil pressure.

Engine Oil Life Remaining: The scan tool displays 0-100 percent. The scan tool displays the percent of engine oil life remaining. The PCM calculated the engine oil life by monitoring engine load, engine temperature, and engine speed

Engine Oil Pressure Sensor: The scan tool displays 0-5 volts. The scan tool displays the engine oil pressure in volts.

Engine Run Time: The scan tool displays Hours, Minutes, Seconds. This indicates the amount of engine run time. When the ignition is cycled OFF, the timer will reset to zero.

Engine Speed: The scan tool range is 0-10,000 RPM. The PCM computes engine speed from the ignition reference pulses. The engine speed should remain close to desired idle under various engine loads with the engine idling.

EVAP Canister Purge: The scan tool range is 0-100 percent. Represents the PCM commanded PWM duty cycle of the evaporative emission (EVAP) purge valve. 0 percent displayed indicates no purge. 100 percent displayed indicates full purge.

EVAP Fault History: The scan tool displays No Fault, Excess Vacuum, Purge Valve Leak, Small Leak or Weak Vacuum. This parameter displays the result of the EVAP system diagnostic.

EVAP Purge Solenoid Command: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

EVAP Purge Solenoid Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

EVAP Test Abort Reason: The scan tool displays Not Aborted, Lost Enable, Small Leak, Vehicle Not At Rest. Provides additional information relative to the EVAP Test Result parameter.

EVAP Test Result: The scan tool displays No Result, Passed, Aborted, Fail - DTC P0440, Fail - DTC P0442, Fail - DTC P0446, Fail - DTC P1441. This information can be used to check system operation. Operate the vehicle within the conditions required to enable the diagnostic, refer to the EVAP DTCs supporting text. This parameter displays the results of the EVAP system diagnostic tests.

EVAP Test State: The scan tool displays Wait For Purge, Test Running, Test Completed. Indicates the current status of the EVAP diagnostic routine.

EVAP Vent Solenoid Command: The scan tool displays Venting or Not Venting. This parameter represents the commanded state of the EVAP Canister fresh air vent solenoid by the PCM. The vent should be venting or open during normal operation.

Extended Travel Brake Pedal Switch: The scan tool displays Applied or Released. This parameter displays the state of the extended travel brake pedal switch. This switch is normally closed with the brake pedal released. The scan tool displays released with the brake pedal released. The scan tool displays applied with the brake pedal applied approximately greater than 40 percent.

FC Relay 1 Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

FC Relay 1 Command: The scan tool displays On or Off. The PCM is commanding fan control relay 1 ON when the scan tool indicates On. When the PCM commands the fan control relay 1 ON, both fans are enabled on low speed.

FC Relay 2 and 3 Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

FC Relay 2 and 3 Command: The scan tool displays On or Off. The PCM is commanding all three fan control relays ON when the scan tool indicates On. When all fan control relays are activated, both cooling fans are enabled on high speed.

Fuel Level: The scan tool displays 0-100 percent. The scan tool displays the amount of fuel remaining in the fuel tank in a percentage.

Fuel Level Sensor: The scan tool displays 0-5 volts. The PCM supplies a 5-volt signal circuit to the fuel level sensor. The float inside the fuel tank is connected to a variable resistor which causes the signal voltage to change with fuel level. The PCM converts the signal voltage to a fuel level value. The scan tool displays close to 0.8 volts for an empty tank, and close to 2.5 volts for a full tank.

Fuel Pump Relay Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

Fuel Pump Relay Command: The scan tool displays On or Off. This parameter indicates the PCM commanded state of the fuel pump relay driver circuit.

Fuel Tank Pressure: The scan tool displays -32.7 to +14.0 mm Hg (-17.5 to +7.5 inch H2O). Fuel tank pressure (FTP) is used extensively for EVAP purge control and EVAP system diagnostics.

Fuel Tank Pressure: The scan tool displays 0-5 volts. Fuel tank pressure is used extensively for EVAP purge control and EVAP system diagnostics.

Fuel Trim Cell: The scan tool range is 0-9. The fuel trim cell is dependent upon the engine speed and the MAF sensor readings. A plot of RPM vs. MAF is divided into 10 cells. The fuel trim cell indicates which cell is currently active.

Fuel Trim Learn: The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled. This indicates that the long term fuel trim is responding to the short term fuel trim. If the scan tool displays Disabled, then long term fuel trim will not respond to changes in short term fuel trim.

GEN F-Terminal Signal: The scan tool displays 0-100 percent. This parameter indicates the pulse width of the voltage regulator's generator field control circuit. A high value indicates high electrical load.

GEN L-Terminal Signal Command: The scan tool displays On or Off. Off indicates that the PCM has commanded the generator control circuit Off.

HO2S 1: The scan tool range is 0-1000 mV. The HO2S bank 1 sensor 1 parameter represents the fuel control exhaust oxygen sensor output voltage. The voltage should fluctuate constantly within a range between about 50 mV, lean exhaust and 800 mV, rich exhaust while operating in Closed Loop.

HO2S 1 Heater Command: The scan tool displays On or Off. On indicates that the HO2S heater is being commanded on

HO2S Sensor 1: The scan tool displays Not Ready or Ready. Indicates the status of the fuel control exhaust oxygen sensor. The scan tool will indicate that the exhaust oxygen sensor is ready when the PCM detects a fluctuating heated oxygen sensor (HO2S) voltage sufficient to allow Closed Loop operation. This will not occur unless the exhaust oxygen sensor is warmed up.

HO2S 2: The scan tool range is 0-1000 mV. The HO2S bank 1 sensor 2 parameter is the post-catalyst exhaust oxygen sensor output voltage. Voltage should fluctuate within a range between about 50 mV, lean exhaust and 800 mV, rich exhaust while operating in Closed Loop. The post-catalyst HO2S output voltage will fluctuate slowly over a longer period of time, compared to the fuel control HO2S. This is due to the oxygen storage capability of an efficiently operating catalyst. If the voltage is fluctuating rapidly, and the catalyst is hot, low catalyst efficiency may be the cause.

IAC Position: The scan tool range is 0-255 counts. Displays the commanded position of the idle air control pintle in counts. A larger number of counts means that more air is being commanded through the idle air passage. Idle air control (IAC) position should respond fairly quickly to changes in engine load to maintain desired idle RPM.

IAT Sensor: The scan tool range is -39 to +140°C (-38 to 284°F). The PCM converts the resistance of the intake air temperature sensor to degrees. The PCM uses the intake air temperature (IAT) in order to adjust fuel delivery and spark timing according to incoming air density.

Ignition 1 Signal: The scan tool displays 0-25.5 volts. The ignition 1 signal represents the system voltage measured by the PCM at its ignition feed.

Ignition Mode: The scan tool displays Bypass or IC. Bypass indicates that the ignition control module (ICM) is keeping the spark advance at a fixed 10 degrees BTDC. Ignition control (IC) indicates that the PCM is going to control the spark advance.

Injector PWM: The scan tool range is 0-1000 ms. Indicates the amount of time the PCM is commanding each injector on during each engine cycle. A longer injector pulse width will cause more fuel to be delivered. Injector pulse width should increase with increased engine load.

Knock Retard: The scan tool range is 0-16 degrees. Knock retard indicates the amount of spark the PCM removes from the IC spark advance in response to signals from the knock sensor (KS).

Long Term FT: The scan tool displays -100 to +100 percent. The PCM derives the long term fuel trim from the short term fuel trim value. The long term fuel trim represents a long-term correction of fuel delivery. A value of 0 percent indicates that fuel delivery requires no compensation in order to maintain the PCM commanded air/fuel ratio. A negative value significantly below 0 percent indicates that the fuel system is rich and the PCM is reducing the fuel delivery, decreasing the injector pulse width. A positive value significantly greater than 0 percent indicates that a lean condition exists and the PCM compensates by adding fuel, increasing the injector pulse width. Fuel trim values at maximum authority may indicate an excessively rich or lean system.

Loop Status: The scan tool displays Open or Closed. Closed Loop indicates that the PCM is controlling fuel delivery according to oxygen sensor voltage. In Open Loop, the PCM ignores the oxygen sensor voltage and bases the amount of fuel to be delivered on throttle position (TP) sensor, engine coolant, and MAF sensor inputs only.

MAF Sensor: The scan tool range is 0-655 g/s. Mass airflow (MAF) is the MAF input frequency converted to grams of air per second. This indicates the amount of air entering the engine.

MAF Sensor: The scan tool displays 0-31999 Hz. The PCM converts current draw needed by the MAF, to keep the hot wires at a constant temperature, into a frequency signal. The scan tool displays this frequency in Hertz.

MAP: The scan tool range is 10-105 kPa/0-5 volts. The manifold absolute pressure (MAP) sensor measures the change in the intake manifold pressure from engine load, and speed changes. As intake manifold pressure increases, the intake vacuum decreases resulting in a higher MAP sensor voltage and kPa reading. The PCM uses the MAP sensor signal for the following: (1) Updating the BARO reading; (2) Enabling factor for several of the diagnostics.

MIL Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

MIL Command: The scan tool displays On or Off. The scan tool indicates if the PCM is commanding the malfunction indicator lamp (MIL) ON.

Mileage Since DTC Cleared: The scan tool displays Km or Miles. This parameter indicates the mileage accumulated since an emissions diagnostic trouble code cleared. The PCM stores this information in the Freeze Frame/Failure Records memory.

Misfire Current Cyl. #1 - Misfire Current Cyl. #6: The scan tool range is 0-255 counts. The Misfire Current counters increment at a rate according to the number of possible misfires the PCM detects on each cylinder during the last 200 cylinder firing events. The counters may normally display some activity, but the activity should be nearly equal for all the cylinders.

Misfire History Cyl. #1 - Misfire History Cyl. #6: The scan tool range is 0-65535 counts. The Misfire History counters display 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 DTC P0300 has become active. The Misfire History counters will update every 200 cylinder firing events.

Number of DTCs: The scan tool displays the number of DTCs set and stored in the PCM memory.

O2 Heater Current: The scan tool displays HO2S heater current in amps. This parameter displays the current draw of the HO2S 1 heater only. Typically, the HO2S heater current stabilizes at about 0.50-0.60 amps after operating temperature is reached. Initial current draw is slightly higher.

PCM Reset: The scan tool displays Yes or No. This parameter indicates when the PCM resets. The scan tool displays yes when an internal PCM reset occurred. The scan tool displays no under normal operating conditions.

PCM / VCM in VTD Fail Enable: The scan tool displays Yes or No. If the BCM and PCM lose communications with each other after sending the correct password, the PCM will enable a VTD Fail-Enable mode. This allows the driver to restart the vehicle on future ignition cycles until the communications between the BCM and PCM are restored. The scan tool displays no under normal operating conditions.

Power Enrichment: The scan tool displays Active or Inactive. Active indicates that the PCM has detected conditions appropriate to operate in Power Enrichment mode. The PCM will command Power Enrichment mode when a large increase in throttle position and load is detected. While in Power Enrichment, the PCM will increase the amount of fuel delivered by entering Open Loop and increasing the injector pulse width. This is done to prevent a possible sag or hesitation from occurring during acceleration.

Reduced Engine Power: The scan tool displays Active or Inactive. The PCM has the ability to disable 3 injectors during an engine over temperature condition. The engine enters this mode of operation if the ECT reaches 131°C (268°F). This protection mode permits the PCM to alternate between groups of 3 cylinders, thereby reducing engine temperature. On indicates that the engine is operating in the alternating 3 cylinder mode.

Short Term FT: The scan tool displays -100 to +100 percent. The short term fuel trim represents a short-term correction to fuel delivery by the PCM in response to the amount of time the fuel control oxygen sensor voltage spends above or below the 450 mV threshold. If the oxygen sensor voltage mainly remains less than 450 mV, indicating a lean air/fuel mixture, short term fuel trim increases into the positive range above 0 percent. The PCM adds fuel. If the oxygen sensor voltage stays mainly above the threshold, the short term fuel trim decreases below 0 percent into the negative range. The PCM reduces the fuel delivery in order to compensate for the indicated rich condition. Under certain conditions such as an extended idle and a high ambient temperature, the canister purge may cause the short term fuel trim to read in the negative range during normal operation. The fuel trim values at maximum authority may indicate an excessively rich or lean system.

Spark: The scan tool range is -64 to +64 degrees. Displays the amount of spark advance the PCM is commanding. The PCM computes spark advance using coolant temperature, RPM, engine load, vehicle speed, and requests for timing retard, from the KS system, TCS etc. The PCM controls the timing and sequencing of the ignition system.

Start Up ECT: The scan tool range is -40 to +151°C ( -40 to +304°F). Indicates the engine coolant temperature at the time that the vehicle was started. Used by the HO2S diagnostic to determine if the last startup was a cold start.

Start Up IAT: The scan tool range is -40 to +151°C (-40 to +304°F). Indicates the intake air temperature (IAT) at the time that the vehicle was started. Used by the HO2S diagnostic to determine if the last startup was a cold start.

Starter Enable Relay Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

Starter Relay Command: The scan tool displays On or Off. Off indicates that the PCM is not allowing starter operation due to the engine running, excessive cranking time, trans not in P/N or other factors.

Tachometer Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

TCC Brake Pedal Switch: The scan tool displays Applied or Released. This parameter indicates the state of the torque converter clutch (TCC) brake pedal switch circuit input. Open indicates 0 voltage input, TCC brake pedal switch open, brake pedal applied. Closed indicates a B+ voltage input, TCC brake switch closed, brake pedal released. When you apply the vehicle brakes, the scan tool display shows Applied. The torque converter clutch (TCC) and cruise control disengages. When you release the vehicle brakes, the scan tool displays Released. This allows the cruise control to be resumed and the torque converter clutch to engage.

TCC Enable Solenoid Command: The scan tool displays On or Off. This parameter indicated the commanded state of the torque converter clutch (TCC) solenoid.

TCC PWM Solenoid Command: The scan tool displays On or Off. This parameter indicated the commanded state of the torque converter clutch (TCC) solenoid.

TCC Solenoid Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

TCS Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

TFP Sw.: The scan tool displays Park / Neutral, Drive 1, Drive 2, Drive 3, or Drive 4. This parameter displays the selected gear of the automatic transmission.

Total Misfire Current Count: The scan tool range is 0-99 counts. Indicates the total number of cylinder firing events that were detected as being misfires during the last 200 crankshaft revolution sample period.

TP Sensor: The scan tool displays 0-5 volts. The scan tool displays the amount of throttle opening in volts. Closed throttle displays about 1 volt and wide open throttle displays about 3.5 volts.

TP Sensor: The scan tool displays 0-100 percent. This parameter displays the amount of throttle opening in percent.

Traction Control Status: The scan tool displays Active, Allowed, Inhibited, Comm. Link Fail, Trac PWM Input or Diag. Trac. PWM. Active indicates that a traction control event is occurring. Allowed indicates that the system is ready and operational but not currently controlling traction. Inhibited indicates that system operation is not allowed due to driver input or other factors. The remaining statuses indicate various malfunctions.

TWC Temperature Calculated: The scan tool displays the calculated temperature of the three way catalyst.

Vehicle Speed Sensor: The scan tool displays km/h and mph. The vehicle speed sensor (VSS) signal is converted into km/h and mph for display.

VTD Auto. Learn Timer: The scan tool displays Active or Inactive. This parameter indicates the status of the vehicle theft deterrent system password learn.

VTD Fuel Disable: The scan tool displays Active or Inactive. If the PCM has not received the correct password from the body control module (BCM), the PCM will disable the fuel system, and Active will be displayed on the scan tool. The scan tool displays Inactive under normal running conditions.

VTD Fuel Disable Until Ign. Off: The scan tool displays Yes or No. With the ignition on and a VTD code present the scan tool displays yes. With the ignition off the scan tool displays no.