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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 Oft. 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 stale of the driver circuit for this device.

AIR Pump Relay Command: The scan tool displays On or Oft. 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.