1 - E

The Engine Scan Tool Data Definitions contains a brief description of 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 0.00-5.00 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 in order 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 TP sensor signal is at wide open throttle.

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

A/C Request: The scan tool displays Yes or No. The A/C Request 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 Pump Relay: 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: 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 toot indicates OFF.

Abuse Management: The scan tool indicates Active or inactive. This parameter will indicate Active when the PCM determines that excessive stress is being applied to the powertrain. The PCM is reducing engine torque when Active is displayed.

Actual EGR Position: The scan tool range is 0-100 percent. Represents the actual position of the exhaust gas recirculation (EGR) pintle in percent. Zero percent displayed indicates a fully extended pintle (EGR valve closed).

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

BARO: The scan tool range is 10-105 kPa or 0.00-5.00 Volts. The barometric pressure 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 compensates for altitude differences.

Brake Switch: The scan tool displays Applied or Released. This parameter indicates the state of the brake switch circuit input. Open indicates 0.0 voltage input (brake switch open, brake pedal applied). Closed indicates a B+ voltage input (brake switch closed. Brake pedal released). When you apply the vehicle brakes. The scan tool display shows Applied. The torque converter clutch 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.

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 (Data): The scan tool displays RPM. This parameter is engine RPM calculated from the (camshaft position) CMP sensor signal.

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

Commanded A/C: The scan tool displays ON or OFF represents the PCM commanded state of the A/C compressor clutch relay driver circuit. The A/C compressor clutch should be engaged when commanded A/C displays ON.

Commanded Fuel Pump: The scan tool displays ON or OFF. Represents the PCM commanded state of the fuel pump relay driver circuit.

Commanded GEN: The scan tool displays ON or OFF. OFF displayed indicates that the PCM has commanded the generator control circuit OFF.

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

Cruise Inhibited: The scan tool displays Yes or No. Yes displayed indicates that the PCM is commanding the SMCC module to inhibit cruise control operation. The scan tool should display Yes with park, neutral, reverse or low gear selected.

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

Cruise Mode: The scan tool displays ON or OFF. ON indicates that the cruise is engaged.

Current Gear: The scan tool displays the numbers 1, 2, 3, or 4. The PCM looks at trans 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.

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

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

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

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 in order to keep the engine at the desired speed.

Desired EGR Position: The scan tool range is 0-100 percent. This represents the EGR pintle position that the PCM is commanding. Desired EGR Position should stay close to Actual EGR Position.

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

ECT: The scan tool range is -39°C to +140°C (-38°F to +284°F). The PCM applies 5 volts to the engine coolant temperature (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 Circuit Status: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

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

EGR Closed Pintle Position: The scan tool range is 0-255 counts. This value is the closed valve position in counts.

EGR Closed Val. Pintle Position: The scan tool range is 0.0-5.0 volts. This represents the learned voltage that the PCM uses to determine whether or not the EGR valve is fully closed (0 percent pintle position). If the Desired EGR Position is 0 percent and a difference of more than 0.4 volt between EGR Feedback and EGR Closed Valve Pintle Position is detected, DTC P1406 will set.

EGR Duty Cycle: The scan tool range is 0-100 percent. This represents the EGR valve driver pulse width modulation (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 maximum EGR flow commanded.

EGR Feedback: The scan tool range is 0.00-5.00 Volts. This indicates the EGR pintle position sensor signal voltage being monitored by the PCM. A low voltage indicates a fully extended pintle (closed valve); a voltage near 5 volts indicates a fully retracted pintle (open valve).

EGR Flow Test Count: The scan tool range is 0-255 counts. This 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 Position Error: The scan tool range is -100 percent to +100 percent. This 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.

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. Zero percent displayed indicates no purge while 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 Sol.: The scan tool displays OK or Fault. This parameter indicates the state of the driver circuit for this device.

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 display. The results of the EVAP system diagnostic tests.

EVAP Test Result 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 State: The scan tool displays wait For Purge, Test Running, Test Completed. This indicates the current status of the EVAP diagnostic routine

EVAP Vent Sol.: The scan tool displays Open or Closed. This represents the state of the EVAP canister fresh air vent solenoid. The EVAP canister fresh air vent solenoid should be open during normal operation.

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 air increase in RPM or airflow.

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

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 computers engine speed from the ignition reference pulses. The engine speed should remain close to desired idle under various engine loads with the engine idling.