Engine Control Module Scan Tool Information (2.0L LDK)
| Engine Control Module Scan Tool Information (2.0L LDK) |
The Engine Control Module Scan Tool Data List contains all engine-related parameters that are available on the scan tool. The list is arranged in alphabetical order. A given parameter may appear in any one of the data lists, and in some cases may appear more than once, or in more than one data list in order to group certain related parameters together.
Use the Engine Scan Tool Data List only after the following is determined:
| • |
Diagnostic System Check - Vehicle
is completed.
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|
| • |
No diagnostic trouble codes (DTCs)
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|
| • |
On-board diagnostics are functioning properly.
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The scan tool values from a properly running engine may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents values that would be seen on a normally running engine.
| Note | ||
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A scan tool that displays faulty data should not be used. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool can result in misdiagnosis and unnecessary parts replacement. |
Only the parameters listed below are referenced in this service manual for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls for the 2.0L engine for diagnosis.
Engine Control Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
|
Base Operating Conditions:
Engine Idling/Radiator Hose Hot/Closed Throttle/Park or Neutral/Closed Loop/Accessories Off/Brake Pedal Released
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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.
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5-Volt Reference 2 Circuit Status
|
-
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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.
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5-Volt Reference 3 Circuit Status
|
-
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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.
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A/C Compressor Operation
|
-
|
Varies
|
This parameter will display allowed or not allowed.
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A/C Disengage History 1-8
|
-
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Varies
|
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.
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A/C High Side Pressure Sensor
|
-
|
1.43 Volts
|
The scan tool displays 0-5 volts. This is the A/C refrigerant pressure sensor voltage signal.
|
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A/C On
|
2.39 Volts
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||
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A/C High Side Pressure Sensor
|
-
|
868 kPa (125 psi)
|
The scan tool displays -103 to +3,119 kPa (-14 to +452 psi). This is the A/C refrigerant pressure sensor voltage signal converted to pressure.
|
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A/C On
|
1568 kPa (227 psi)
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||
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A/C Off for WOT
|
-
|
No
|
This parameter indicates if the A/C system was commanded off for a wide open throttle event.
|
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A/C Disable - A/C Pressure Out of Range
|
-
|
No
|
The diagnostic tool shows Yes or No. Yes is shown when the system pressure exceeds 3,034 kPa (440 psi).
|
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A/C Clutch Relay Control Circuit Low Voltage Test 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 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.
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A/C Clutch Relay Control Circuit Open Test Status
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-
|
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 Not Run if a diagnosis has not been made. The scan tool will display Fault if there is an open in the circuit.
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A/C Clutch Relay Control Circuit High Voltage Test Status
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-
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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 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.
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A/C Clutch Relay Command
|
-
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Off
|
The scan tool displays ON or OFF. ON is displayed when the ECM has energized the A/C compressor clutch relay.
|
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With A/C Selected
|
On
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A/C Request Signal
|
-
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No
|
This parameter displays the state of the air conditioning (A/C) request input to the control module from the heating, ventilation, and air conditioning (HVAC) controls. The diagnostic tool shows Yes or No. Yes indicates the control module is receiving a request from the HVAC system to ground the A/C clutch relay control circuit, engaging the A/C compressor clutch. No indicates the control module is not receiving a request from the HVAC system to ground the A/C clutch relay control circuit.
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With A/C Selected
|
Yes
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Actual Fuel Rail Pressure
|
-
|
-
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This parameter displays the fuel rail pressure as calculated by the control module using the signal from the fuel rail pressure (FRP) sensor. The actual fuel rail pressure is a range of values indicating a low pressure when the fuel rail pressure is low to a high pressure when the fuel rail pressure is high.
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Air Flow Calculated
|
-
|
3-6 g/s
|
This parameter displays the air flow of the engine as calculated by the 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).
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Accelerator Pedal Position
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Accelerator pedal not actuated
|
0%
|
This parameter displays the angle, in percent, 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.
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Accelerator pedal fully actuated
|
100%
|
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Air/Fuel Equivalence Ratio Command
|
-
|
1.0:1
|
Equivalence numbers greater than one represent excess fuel in the fuel air mix. Equivalence numbers less than one represent a deficiency of fuel in the fuel air mix for complete combustion. The equivalence ratio will be reported as one when the vehicle is in Closed Loop.
|
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Ambient Air Temperature
|
-
|
°C °F Varies
|
This parameter displays the outside air temperature as calculated by the control module.
|
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APP Sensors
|
-
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0%
|
This parameter displays the average of the accelerator pedal position (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 percent.
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APP Sensor 1
|
Accelerator pedal not actuated
|
0.94 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.
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Accelerator pedal fully actuated
|
4.27 Volts
|
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APP Sensor 1 and 2
|
-
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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.
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APP Sensor 2
|
Accelerator pedal not actuated
|
0.47 Volts
|
This parameter displays the voltage signal sent to the control module from APP sensor 2 of the APP sensor assembly. APP sensor 2 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.
|
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Accelerator pedal fully actuated
|
2.10 Volts
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Average Total Fuel Trim
|
-
|
Varies
|
This parameter displays the overall fuel trim from the idle/decel cell and the cruise/accel cell.
|
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BARO
|
-
|
60-104 kPa (varies with altitude)
|
This parameter displays the barometric pressure that is received from the BARO sensor that is integrated within the ECM in kPa.
|
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BARO Sensor
|
-
|
3 Volts
|
This parameter displays the barometric pressure in voltage.
|
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Boost Pressure Sensor
|
-
|
98 kPa
|
This parameter shows the TC boost pressure in kPa.
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|
-
|
1.78 Volts
|
This parameter shows the Turbo Charger Boost sensor voltage.
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|
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Brake Booster Pressure Sensor
|
-
|
26 kPa
|
This parameter shows the brake booster pressure in kPa.
|
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Brake Lamps Brake Pedal Switch Signal
|
-
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Released
|
The scan tool displays Applied, Valid, Released, or Invalid. This parameter shows the position of the brake pedal position sensor through the serial data bus.
|
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Brake pedal depressed
|
Applied
|
||
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Released
|
-
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This parameter displays the serial data message of the brake signal from the electronic brake and traction control module (EBTCM).
|
|
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Brake Pedal Position Signal
|
Released
|
-
|
This parameter displays the serial data message of the brake position sensor signal from the electronic brake and traction control module (EBTCM).
|
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Air Flow Calculated
|
-
|
G/S
|
This Parameter contains the mass airflow determined from the speed density (MAP based) calculation of air mass per cylinder.
|
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Calculated Catalyst Temperature
|
-
|
446°C (834°F)
|
Calculated catalytic converter temperature.
|
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Calculated ECT - Closed Loop Fuel Control
|
-
|
Varies
|
This parameter shows the calculated temp used for closed loop control.
|
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Calculated ECT - Thermostat Diagnosis
|
-
|
Varies
|
This parameter shows the calculated temp for thermostat diagnosis.
|
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Calculated Engine Oil Temperature
|
-
|
109°C (228°F)
|
This parameter displays the engine oil temperature.
|
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Catalyst Monitor Complete This Ignition Cycle
|
-
|
Varies
|
This parameter displays the completion status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No
|
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Catalyst Monitor Enabled This Ignition Cycle
|
-
|
Varies
|
This parameter displays the enable status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No
|
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Crankshaft Position Active Counter
|
-
|
0-255 Counts incrementing
|
This parameter displays an incrementing counter when the control module receives a signal from the crankshaft position (CKP) sensor.
|
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Crankshaft Position Resync Counter
|
-
|
0 Counts
|
This parameter displays the number of times the control module has to resynchronize the CKP sensor.
|
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Clutch Pedal Starter Inhibit Switch (if equipped)
|
-
|
Varies
|
This parameter displays the current state of the clutch pedal as determined by the control module. The scan tool will display Applied when the clutch pedal is depressed, and Released when the clutch pedal is not depressed.
|
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Camshaft Position Sensor
|
-
|
RPM
|
This parameter will read zero unless there is a fault with the sensor. Then the value will increase to 255 and stop.
|
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Cold Startup
|
-
|
Varies
|
This parameter displays whether the engine meets the conditions for a cold startup during the present ignition cycle. The scan tool displays Yes when the conditions for a cold startup are met during this ignition cycle. The scan tool displays No when the conditions for a cold startup are not met during the present ignition cycle. Conditions for a cold startup 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.
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Control Module Voltage Signal
|
-
|
14.1 Volts
|
This parameter shows the control module voltage.
|
|
Cooling Fan Relay 1 Control Circuit Open Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open. The parameter displays Indeterminate until the circuit has been commanded ON.
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Cooling Fan Relay 1 Control Circuit Low Voltage Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is shorted to ground. The parameter displays Indeterminate until the circuit has been commanded ON.
|
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Cooling Fan Relay 1 Control Circuit High Voltage Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.
|
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Cooling Fan Relays 2 and 3 Command
|
-
|
On/Off
|
This parameter displays the commanded state of the fan relay 2 output.
|
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Cooling Fan Relays 2 and 3 Control Circuit High Voltage Test Status
|
OK
|
OK/Malfunction/Not Run
|
This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is shorted to voltage.
|
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Cooling Fan Relays 2 and 3 Control Circuit Low Voltage Test Status
|
OK
|
OK/Malfunction/Not Run
|
This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is shorted to ground.
|
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Cooling Fan Relays 2 and 3 Control Circuit Open Voltage Test Status
|
OK
|
OK/Malfunction/Not Run
|
This parameter displays the state of the fan relay control circuit. The parameter displays Malfunction if the fan relay control circuit is open.
|
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CPP Learn Status
|
Clutch Pedal fully applied
|
Complete
|
This Parameter displays the status of the procedure used to learn the clutch pedal fully applied position.
|
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CPP Learned Apply Position
|
-
|
Volts
|
This parameter contains the position learned for the clutch pedal position sensor when the clutch pedal is fully applied during the associated learn procedure.
|
|
CPP Learned Release Position
|
-
|
Volts
|
This parameter contains the position learned for the clutch pedal position sensor when the clutch pedal is released.
|
|
CPP Sensor
|
-
|
Volts
|
This Parameter displays the voltage output of the clutch pedal position sensor.
|
|
-
|
%
|
This Parameter displays the percentage of the clutch pedal position sensor.
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|
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Crank Request Signal
|
-
|
No
|
This parameter shows the power mode status of the starter motor. When Yes is displayed, a request to engage the starter has been received by the ECM.
|
|
Ignition switch in the crank position
|
Yes
|
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Cruise Disengage History 1-8
|
-
|
Varies
|
These parameters indicate the last 8 reasons the ECM disengaged the cruise control. Reason 1 contains the most recent reason. The reasons include the following: Brake Pedal Initialize, Cancel, Clutch, Coast Disengage, Coast Speed Low, TAC Inhibit, Accel Rate, Decel Rate, High Speed, Illegal Mode, Low Speed, None, Cruise Sw OFF, Over Set Speed, S/C On Speed Hi, ECM Inhibit, Simul S/C-R/A, TCS, Under Set Speed, DLC Override, Memory DTC, Eng Run Time, Engine Speed, DTC Set, RPM Limit, First Gear, APP Override, Low Voltage, D Whl Spd Low, D Whl Spd Hi, Cruise S/S, Cruise Sw Data, ECT Overtemp, VSES, Trans. DTC, BPP Data, BPP DTC, Park Brake, ACC Inhibit, ACC Brake DTC, ACC Option, ACC Brake Inop, PTO Active.
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Cruise Control
|
-
|
Inactive
|
This parameter displays the status of the cruise control system as determined by the control module. The scan tool will display Yes when the cruise control system is in control of vehicle speed. The scan tool will display No when the cruise control system is not operating.
|
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Cruise Control Inhibit Reason
|
-
|
OFF
|
This parameter contains one of the last eight reasons that powertrain has disengaged cruise control. A FIFO history buffer, which retains its contents over a battery disconnect, is used to store these reasons with reason 1 containing the most recent reason.
|
|
Cruise Control On/Off Switch
|
-
|
Off
|
The scan tool displays ON or OFF. This is the state of the switch as monitored by the body control module (BCM).
|
|
Switch pressed
|
On
|
||
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Cruise Control Resume/Acceleration Switch
|
-
|
OFF
|
The scan tool displays ON or OFF. This is the state of the switch as monitored by the body control module (BCM).
|
|
Switch pressed
|
ON
|
||
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Cruise Control Set/Coast Switch
|
-
|
OFF
|
The scan tool displays Active or Inactive. This is the state of the switch as monitored by the body control module (BCM).
|
|
Switch pressed
|
ON
|
||
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Current Gear
|
-
|
1
|
This parameter displays the transmission gear commanded by the transmission control module.
|
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Cycles of Misfire Data
|
-
|
0-100 Counts incrementing
|
This parameter displays the number of cylinder firing events that were recorded as misfires as determined by the control module.
|
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Cylinder 1-4 Injector Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel injector 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.
|
|
Cylinder 1-4 Injector Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel injector 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.
|
|
Cylinder 1-4 Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel injector 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.
|
|
Cylinder 1-4 Knock Retard
|
-
|
-
|
This parameter displays the knock retard as commanded by the control module for cylinders 1-4. Each cylinder is controlled individually based on both knock sensor signal inputs.
|
|
Cylinder 1-4 Current Misfire Counter
|
-
|
0 Counts
|
The scan tool displays 0-255 counts. The display shows the number of misfires that have been detected during the last 200 cylinder firing events. The counters may normally display some activity, but the activity should be nearly equal for all of the cylinders, and in low numbers.
|
|
Cylinder 1-4 History Misfire Counter
|
-
|
0 Counts
|
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.
|
|
Cylinder 1-4 Injector Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel injector 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.
|
|
Cylinder 1-4 Injector Disabled-Misfire Detected
|
-
|
No
|
This parameter displays the status of the fuel injector driver by the 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 control module due to a misfire.
|
|
Cylinder 1-4 Injector Command
|
-
|
Varies
|
This parameter displays the amount of fuel injector ON time or pulse width as commanded by the engine control module.
|
|
Cylinder 1-4 Knock Detected
|
-
|
No
|
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.
|
|
Cylinder 1 4 Post-Injection Command
|
-
|
0 ms
|
This parameter displays the amount of fuel injector ON time or pulse width as commanded by the control module for catalyst heating.
|
|
Deceleration Fuel Cutoff
|
-
|
Inactive
|
This parameter displays the status of the operating mode used to turn off the fuel injectors during certain deceleration conditions. When the scan tool displays Active, the control module has turned off the fuel injectors. When the scan tool displays Inactive, the fuel system is operating normally.
|
|
Desired Exhaust Camshaft Position
|
-
|
0 degrees
|
This parameter displays the desired exhaust camshaft position, as determined by the control module. The scan tool will display a higher value for more advanced exhaust valve timing, such as at high load or speed conditions. The scan tool will display a lower value for a less advanced exhaust valve timing, such as at idle.
|
|
Desired Fuel Rail Pressure
|
-
|
3.8 MPa
|
This parameter displays the desired fuel rail pressure as calculated by the control module. This value is calculated based on engine speed, engine load, and sensor inputs. The scan tool will display a higher value at higher engine speeds and loads, and a lower value at idle.
|
|
Desired HO2S 1
|
-
|
Varies
|
This parameter displays the desired heated oxygen sensor (HO2S) lambda value as commanded by the control module.
|
|
Desired Idle Speed
|
-
|
768 RPM
|
This parameter displays the engine idle speed in RPM commanded by the control module. The control module compensates for various engine loads in order to maintain the desired engine RPM at idle. This parameter is not valid unless the engine is running.
|
|
Desired Intake Camshaft Position
|
-
|
0 degrees
|
This parameter displays the desired intake camshaft position, as determined by the control module. The scan tool will display a higher value for more advanced intake valve timing, such as at high load or speed conditions. The scan tool will display a lower value for a less advanced intake valve timing, such as at idle.
|
|
Desired Boost Pressure
|
-
|
48 kPa
|
This parameter displays the desired turbocharger boost pressure as determined by the engine control module.
|
|
Desired Throttle Position
|
-
|
6%
|
The scan tool displays %. The scan tool displays 0-100 percent. The ECM indicates the desired throttle angle commanded by the vehicle operator. The scan tool indicates the desired throttle angle commanded by the vehicle operator.
|
|
With Ignition On, Engine Off, Accelerator pedal not actuated
|
11%
|
||
|
With Ignition On, Engine Off, Accelerator pedal fully actuated
|
100%
|
||
|
Distance Since DTC Cleared
|
-
|
Varies
|
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 Since First Malfunction
|
-
|
0 Km/mi
|
This parameter displays in kilometers or miles the distance traveled since a Malfunction occurred.
|
|
Distance with MIL On
|
-
|
Km/mi
|
This parameter displays the Distance Traveled with MIL Commanded On
|
|
Engine Controls Ignition Relay Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the engine control ignition 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.
|
|
Engine Controls Ignition Relay Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the engine control ignition 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.
|
|
Engine Controls Ignition Relay Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the engine control ignition 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.
|
|
Engine management system's ignition relay feedback signal
|
-
|
13.0-14.2 Volts
|
This parameter displays the voltage signal sent to the control module from the engine control ignition relay. The scan tool will display battery voltage when the engine is running. The scan tool will display no voltage when the relay is OFF.
|
|
Engine Controls Ignition Relay Command
|
-
|
On
|
This parameter displays the commanded state of the EC ignition relay control circuit. The diagnostic tool shows ON or OFF. ON indicates that the control circuit for EC ignition relay is 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.
|
|
ECM in Immobilizer Fail Enable Mode
|
-
|
No
|
This parameter indicates whether or not the engine control module (ECM) is in failure enable mode for the vehicle theft deterrent (VTD) system.
|
|
ECT Sensor
|
-
|
96-103°C (204-217°F)
|
This parameter displays the temperature of the engine coolant based on the input from the engine coolant temperature sensor. When the coolant temperature is low, the scan tool will display a low temperature. When the coolant temperature is high, the scan tool will display a high temperature.
|
|
Electric Power Management Inhibit Reason
|
-
|
None/Control Function/Active/Fuel System/On-board Diagnostic System/Air Flow Measurement System/Cylinder Deactivation System/System Transmission Control Module
|
This Parameter displays the reason for the source of the Regulated Voltage Control (RVC) override command. RVC lowers system operating voltage to reduce system electrical load and improve fuel economy performance.
|
|
Engine Load
|
-
|
Varies
|
This parameter displays the engine load in percent based on inputs to the control module from various engine sensors. The scan tool will display a low percentage when the engine is at idle with little or no load. The scan tool will display a high percentage when the engine is running at a high RPM under a heavy load.
|
|
Oil Pressure Switch
|
-
|
OK
|
This parameter displays the state of the engine oil pressure as determined by the control module. The control module monitors the engine oil pressure switch to determine if the engine oil pressure is sufficient. The scan tool will display low when the engine oil pressure is below a predetermined value.
|
|
Engine Off Time
|
-
|
Varies
|
This parameter displays the time elapsed since the engine was shut OFF.
|
|
Engine Run Time
|
-
|
Varies
|
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 when the engine stops running.
|
|
Engine Oil Life Remaining.
|
-
|
%
|
This parameter displays the percent of engine oil life remaining. The engine control module calculates the engine oil life by monitoring engine load, coolant temperature, and engine speed.
|
|
Engine Speed
|
-
|
750-800 RPM
|
This parameter displays the speed of the crankshaft as determined by the control module using an input from the crankshaft position (CKP) sensor. The scan tool will display a high value at high engine speeds and a low value at low engine speeds.
|
|
Exhaust Camshaft Position Active Counter
|
-
|
1-255 Counts
|
This parameter displays an incrementing counter when the control module receives a signal from the camshaft position (CMP) sensor.
|
|
Exhaust Camshaft Position
|
-
|
0 degrees
|
This parameter displays the degrees of advanced exhaust camshaft angle related to crankshaft position as determined by the control module based on input from the exhaust CMP sensor. The scan tool will display a higher value for a more advanced exhaust camshaft position. The scan tool will display a lower value when the exhaust camshaft is not being advanced, such as at idle.
|
|
Exhaust Camshaft Position Command
|
-
|
6%
|
This parameter displays the exhaust camshaft position in percent of range as commanded by the engine control module.
|
|
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open. The parameter displays Indeterminate until the circuit has been commanded ON.
|
|
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is shorted to ground. The parameter displays Indeterminate until the circuit has been commanded ON.
|
|
Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the exhaust camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.
|
|
Exhaust Camshaft Position Variance
|
-
|
0 degrees
|
This parameter displays in degrees, the difference between the desired exhaust camshaft position and the actual exhaust camshaft position.
|
|
Extended Travel Brake Pedal Position Signal
|
-
|
Released
|
This parameter will display the state of the brake pedal, applied or released.
|
|
Fuel Pump Enable Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel pump 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 Malfunction if there is an short to voltage in the circuit.
|
|
Fuel Pump Enable Circuit Open Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel pump 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 Malfunction if there is an open in the circuit.
|
|
Fuel Pump Enable Circuit Low Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the fuel pump 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 Malfunction if there is an short to ground in the circuit.
|
|
Fuel Control Loop Status Sensor 1
|
-
|
Varies
|
Closed loop indicates that the ECM is controlling fuel delivery according to oxygen sensor voltage. In open loop, the ECM ignores the oxygen sensor voltage and bases the amount of fuel to be delivered on throttle position (TP) sensor, ECT, and mass air flow (MAF) sensor inputs only.
|
|
Fuel Control Loop Status Sensor 2
|
-
|
Varies
|
Closed loop indicates that the ECM is controlling fuel delivery according to oxygen sensor voltage. In open loop, the ECM ignores the oxygen sensor voltage and bases the amount of fuel to be delivered on throttle position (TP) sensor, ECT, and mass air flow (MAF) sensor inputs only.
|
|
Fuel Level Sensor
|
-
|
Varies
|
This parameter displays the approximate fuel level in the fuel tank as a voltage. The control module calculates this level using the signal from the sensor used to monitor the fuel level in the fuel tank. The scan tool will display a low reading when the fuel level in the tank 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 Level Sensor Left Tank (If Equipped)
|
Ignition On
|
Volts
|
This parameter displays the voltage signal received by the control module from the secondary fuel level sensor in the left side of the fuel tank.
|
|
Fuel Level Sensor Right Tank (If Equipped)
|
Ignition On
|
Volts
|
This parameter displays the voltage signal received by the control module from the primary fuel level sensor in the right side of the fuel tank.
|
|
Fuel Pump Enable 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 Rail Pressure Regulator Command
|
Engine idling
|
130 to 135 Degrees
|
The scan tool displays in degrees, the Fuel Rail Pressure Regulator ON time as commanded by the engine control module.
|
|
Fuel Rail Pressure Sensor
|
Engine Idling
|
MPa
|
This Parameter displays the high side fuel pressure after the high pressure pump
|
|
-
|
1.2-1.5 Volts
|
This parameter displays the voltage signal sent to the control module from the sensor used to monitor the pressure inside the fuel rail. The scan tool will display a low voltage when the pressure in the fuel rail is low. The scan tool will display a high voltage when the pressure in the fuel rail is high.
|
|
|
Fuel Tank Rated Capacity
|
-
|
61.2 Liters (16.2 Gallons)
|
This parameter displays the rated maximum quantity of fuel the fuel tank will hold. This is calibrated in the control module to match the vehicle.
|
|
Fuel Trim Learn
|
-
|
Enabled
|
This parameter indicates if the control module is adjusting long term fuel trim in response to the short term fuel trim. The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled.
|
|
Fuel Volatility
|
-
|
Varies
|
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.
|
|
Generator F-Terminal Signal
|
-
|
45% Varies with electrical load
|
This parameter is an ECM input of the generator field duty cycle. This is an indication of generator load on the engine.
|
|
Generator L-Terminal Circuit Low Voltage Test 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 to ground on the circuit.
|
|
Generator L-Terminal Circuit Open Test 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 an open in the circuit.
|
|
Generator L-Terminal Circuit High Voltage Test 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 to voltage on the circuit.
|
|
Generator L-Terminal Signal Command
|
-
|
On
|
This parameter indicates the generator commanded state by the ECM.
|
|
HO2S 1
|
-
|
50-900 mV - Varies
|
This parameter displays the voltage output from the HO2S to the control module. A lower voltage indicates a lean exhaust, while a higher voltage indicates a rich exhaust.
|
|
HO2S 1 Heater Command
|
-
|
Varies
|
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.
|
|
-
|
On
|
This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display On as the heater is commanded ON, and OFF if the heater is not commanded ON.
|
|
|
HO2S 1 Heater Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the HO2S heater 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.
|
|
HO2S 1 Heater Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the HO2S heater 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.
|
|
HO2S 1 Heater Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the HO2S heater 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.
|
|
HO2S 1 Module Signal
|
-
|
Varies
|
This parameter displays the voltage of the HO2S control transistor, which is internal to the control module.
|
|
HO2S 1 Sensing Element
|
-
|
300 Ohms
|
This parameter displays the resistance of the sensing element within the control module. The front sensors are normally regulated to 80 ohms. The rear sensors are normally regulated between 20-300 ohms which depends on temperature.
|
|
HO2S 2
|
-
|
50-850 mV and Varying
|
The scan tool displays a range of 0-1,106 mV. The HO2S bank 2 parameter represents the exhaust oxygen sensor output voltage. The voltage fluctuates constantly within a range between 10 mV , and 1,000 mV, while operating in Closed Loop.
|
|
HO2S 2 Heater Command
|
-
|
%
|
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.
|
|
-
|
On/Off
|
This parameter displays the commanded state of the HO2S heater by the control module. The scan tool will display On as the heater is commanded ON, and OFF if the heater is not commanded ON.
|
|
|
HO2S 2 Heater Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the HO2S heater 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.
|
|
HO2S 2 Heater Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the HO2S heater 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.
|
|
HO2S 2 Heater Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the HO2S heater 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.
|
|
HO2S 2 Sensing Element
|
-
|
100 Ω
|
This parameter displays the resistance of the sensing element within the control module. The front sensors are normally regulated to 80 ohms. The rear sensors are normally regulated between 20-300 ohms which depends on temperature.
|
|
HO2S Heater Monitor Complete This Ignition Cycle
|
-
|
Varies
|
This parameter displays the completion status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No
|
|
HO2S Heater Monitor Enabled This Ignition Cycle
|
-
|
Varies
|
This parameter displays the enable status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No
|
|
IAT Sensor 1
|
-
|
Varies
|
The scan tool displays °C/F.
The ECM converts the resistance of the intake air temperature (IAT) sensor to degrees in the same manner as the engine coolant temperature (ECT) sensor. The scan tool displays a range of -40 to +132°C (-40 to +270°F). |
|
IAT Sensor 2
|
-
|
15-60 °C (59-140°F)
|
This parameter displays the temperature of the air after the turbocharger and the charge air cooler, before it enters the intake manifold. Intake air temp is used by the ECM to adjust fuel delivery and spark timing according to incoming air density.
|
|
Ignition Accessory Signal
|
-
|
On
|
This parameter displays On when the control module detects a voltage at the ignition 0 input terminal.
|
|
Ignition Coil 1 and 4 Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the Ignition 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.
|
|
Ignition Coil 1 and 4 Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the Ignition 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.
|
|
Ignition Coil 1 and 4 Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the status of the output driver for the Ignition 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.
|
|
Ignition Off Time
|
-
|
Varies
|
This parameter displays the time elapsed since the ignition was last turned off. The scan tool will display the time in hours, minutes and seconds.
|
|
Ignition Timing
|
-
|
18-24 Degrees
|
The scan tool displays a range of -64 to +64°. The scan tool displays the amount of degrees the ECM commands. The ECM computes the desired spark advance using the following: (1) ECT, (2) engine speed (RPM), (3) load, (4) vehicle speed. The ECM adjusts the timing.
A negative (-) value indicates degrees before top dead center (BTDC) or spark advance; a positive value indicates degrees after top dead center (ATDC) or spark retard. |
|
Immobilizer Automatic Learn Timer
|
-
|
Inactive
|
This parameter indicates the time elapsed within the current auto-learn cycle within the immobilizer system.
|
|
Immobilizer Fuel Disable
|
-
|
Inactive
|
This parameter indicates the VTD system has disabled fuel.
|
|
Immobilizer Fuel Disable Until Ignition Off
|
-
|
No
|
This parameter indicates the VTD system has disabled fuel for the remainder of the ignition cycle.
|
|
Immobilizer Fuel Enabled
|
-
|
Yes
|
This parameter indicates that the VTD system has enabled the fuel system.
|
|
Immobilizer Password Learned
|
-
|
No
|
This parameter indicates if learning of the immobilizer secret information is enabled.
|
|
Intake Camshaft Position Actuator Solenoid Valve Control Circuit Open Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is open. The parameter displays Indeterminate until the circuit has been commanded ON.
|
|
Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is shorted to ground. The parameter displays Indeterminate until the circuit has been commanded ON.
|
|
Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Test Status
|
-
|
OK/Indeterminate
|
This parameter displays the state of the intake camshaft actuator solenoid control circuit. The parameter displays Fault if the camshaft actuator solenoid control circuit is shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.
|
|
Intake Camshaft Position Active Counter
|
-
|
0-255 Counts
|
This parameter displays an incrementing counter when the control module receives a signal from the camshaft position (CMP) sensor.
|
|
Intake Camshaft Position
|
-
|
0 degrees
|
This parameter displays the actual intake camshaft position in degrees.
|
|
Intake Camshaft Position Command
|
-
|
6%
|
This parameter displays the intake camshaft position in percent of range as commanded by the engine control module.
|
|
Intake Camshaft Position Variance
|
-
|
0 degrees
|
This parameter displays in degrees, the difference between the desired intake camshaft position and the actual intake camshaft position.
|
|
Intake Manifold pressure
|
-
|
kPa
|
This Parameter displays the engine intake manifold vacuum pressure calculated as the difference between ambient air pressure (barometric pressure) and intake manifold absolute pressure (MAP).
|
|
Knock Retard
|
-
|
0 degrees
|
The scan tool displays Degrees.
Indicates the amount of spark the PCM is removing from ignition control (IC) spark advance in response to the signal from the knock sensors. The traction control system desired torque signal from the electronic brake and traction control module (EBTCM) may cause knock retard to display a value more than 0.0 degrees if traction control is active. |
|
Knock Sensor 1 Signal
|
-
|
Varies
|
This parameter displays the voltage input to the engine control module from the knock sensor (KS).
|
|
Knock Sensor 2 Signal
|
-
|
Varies
|
This parameter displays the voltage input to the engine control module from the knock sensor (KS).
|
|
Long Term Fuel Trim
|
-
|
-10 to +10%
|
The scan tool range is -99 to +99 percent . This parameter indicates the Long Term fuel trim (FT) correction for bank 1 as commanded by the ECM.
A change made to the fuel delivery will be indicated by the Long and Short Term FT values. The Short Term FT values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The Long Term FT values change in response to the trends in the Short Term FT. The Long Term FT makes coarse adjustments to the fueling in order to re-center and restore control to the Short Term FT. The Short Term FT and the Long Term FT can be monitored with a scan tool. A positive fuel trim value indicates that the ECM is adding fuel in order to compensate for a lean condition. A negative fuel trim value indicates that the ECM is reducing the amount of fuel in order to compensate for a rich condition. |
|
Long Term Fuel Trim Idle/Deceleration
|
-
|
0%
|
This parameter displays the commanded Long Term Fuel Trim correction by the control module for idle and deceleration conditions.
|
|
MAF Sensor
|
-
|
3-6 g/s (varies with altitude)
|
The scan tool displays g/s.
The scan tool displays a range of 0.0-655 g/s. The mass air flow (MAF) is the MAF input frequency converted to grams of air per second. This indicates the amount of air entering the engine. |
|
-
|
1,200-1,300 Hz (varies with altitude)
|
The scan tool displays a range of 0-65,555 Hz. The MAF sensor is a hot wire type air flow sensor. The ECM 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 a hertz signal.
|
|
|
Malfunction Counter
|
-
|
Quantity
|
The scan tool displays the number of ignition cycles with a failure reported since the first ignition cycle with a failure reported. This parameter is only meaningful within the context of a failure record or freeze frame.
|
|
Manual Transmission Overtemperture Activation Counter
|
-
|
Quantity
|
This parameter indicates the status of manual transmission oil over-temperature protection. If the manual transmission oil temperature exceeds a calibratible value, the engine torque characteristics will be adjusted to allow the transmission oil to cool. This parameter will retain a record of the activation of the manual transmission oil over-temperature protection mode and a count of the drive cycles since the last activation. The counter will reset during each drive cycle in which the manual transmission oil over-temperature protection mode is activated or when the maximum drive cycle counter value is reached.
|
|
Manual Transmission Overtemperture Protection Mode
|
-
|
No
|
This parameter indicates the status of manual transmission oil over-temperature protection.
|
|
MAP Sensor
|
-
|
20-42 kPa (varies with altitude)
|
The scan tool displays kPa.
The MAP sensor measures the change in the intake manifold pressure which results from engine load and speed changes. As the intake manifold pressure increases, the air density in the intake also increases and additional fuel is required. The scan tool displays a range of 10-240 kPa. |
|
-
|
0.80-1.30 Volts (varies with altitude)
|
The scan tool displays volts.
The MAP sensor measures the change in the intake manifold pressure which results from engine load and speed changes. As the intake manifold pressure increases, the air density in the intake also increases and additional fuel is required. The scan tool displays a range of 0-5 volts. |
|
|
MIL Command
|
-
|
Off
|
This parameter displays the commanded state of the 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 control module will command the MIL On when the ignition is ON with the engine OFF in order to perform a bulb check.
|
|
MIL Requested by DTC
|
-
|
No
|
This parameter shows if the illumination of the MIL has been requested by a failed diagnostic trouble code (DTC).
|
|
Not Run Counter
|
-
|
Quantity
|
The scan tool displays the number of ignition cycles without a pass or a failure reported since the first ignition cycle with a failure reported. This parameter is only meaningful within the context of a failure record or freeze frame.
|
|
O2S / HO2S Monitor Complete This Ignition Cycle
|
-
|
Varies
|
This parameter displays the completion status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No
|
|
O2S / HO2S Monitor Enabled This Ignition Cycle
|
-
|
Varies
|
This parameter displays the enable status during the current driving/monitoring cycle of the non-continuous legislated emission related monitor. The states include Yes or No
|
|
Park/Neutral Switch
|
-
|
Park / Neutral
|
The scan tool displays the position of the transmission selection as Park/Neutral or In Gear.
|
|
Pass Counter
|
-
|
Quantity
|
The scan tool displays the number of ignition cycles with a pass reported and no failures reported since the first ignition cycle with a failure reported. This parameter is only meaningful within the context of a failure record or freeze frame
|
|
Power Enrichment
|
-
|
Inactive
|
The scan tool displays ACTIVE or INACTIVE. ACTIVE displayed indicates that the ECM has detected conditions appropriate to operate in Power Enrichment mode. The ECM will command Power Enrichment mode when a large increase in throttle position and load is detected. While in Power Enrichment, the ECM 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.
|
|
Power Moding
|
-
|
OFF/Accessory/Run/Crank Request
|
This Parameter displays the state of the System Power Mode. This signal is based upon the state of the system power mode received over serial communication from the vehicle electronics. If the serial data signal not received, the Parameter will display OFF.
|
|
Reduced Engine Power
|
-
|
Inactive
|
The scan tool displays Active or Inactive. The scan tool displays Active when the ECM receives a signal from the TAC module that a throttle actuator control system fault is occurring. The ECM limits the engine power.
|
|
Remaining Fuel in Tank
|
-
|
Varies
0-100% |
This parameter displays the amount of fuel remaining in the fuel tank as a percentage. The control module calculates this level using the signal from the sensor used to monitor the fuel level in the fuel tank. The scan tool will display a low reading when the fuel level in the tank 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.
|
|
0-61 Liters (0-16.2 gallons)
|
|||
|
Replicated Transmission OSS Signal
|
-
|
RPM
|
This parameter contains the Replicated Transmission Output Speed (Replicated TOS) received from the Transmission Control Module. Replicated TOS results from hardware in the TCM that "re-transmits" the Transmission Output Speed Sensor pulses to the ECM.
|
|
Reverse Switch
|
-
|
Off
|
Manual Transmission Reverse Switch On indicates that the reverse switch hardwire input to the ECM is active.
|
|
Closed Loop
|
-
|
-10 to +10%
|
The Short Term FT values change rapidly in response to the HO2S signal voltages. These changes fine tune the engine fueling. The Long Term FT values change in response to the trends in the Short Term FT. The Long Term FT makes coarse adjustments to the fueling in order to re-center and restore control to the Short Term FT. The Short Term FT and the Long Term FT can be monitored with a scan tool. A positive fuel trim value indicates that the ECM is adding fuel in order to compensate for a lean condition. A negative fuel trim value indicates that the ECM is reducing the amount of fuel in order to compensate for a rich condition.
|
|
Starter Relay Command
|
-
|
Off
|
The scan tool displays ON or OFF. This displays the commanded state of the starter relay by the ECM.
|
|
Ignition switch in the crank position
|
On
|
||
|
Start-up ECT
|
-
|
Varies
|
Indicates the engine coolant temperature at engine start up.
The scan tool displays a range of -40 to +150°C (-40 to +302°F). The scan tool displays the engine ECT at the time the engine was started. The ECM uses start-up ECT for certain DTCs. Used to determine if the last startup was a cold start. |
|
Start-up IAT
|
-
|
Varies
|
Indicates the IAT at the time that the vehicle was started. Used to determine if the last startup was a cold start.
The scan tool range is -40 to +132°C (-40 to +270°F). |
|
TAC Forced Engine Shutdown
|
-
|
No
|
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 Motor
|
-
|
Enabled
|
This parameter indicates the status of the TAC motor driver by the ECM. 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 System Learned Counter
|
-
|
Quantity
|
This parameter displays the steps counted in learning the throttle actuator control parameters. The last step learned is 11.
|
|
TCM Requested Torque
|
-
|
Nm
|
Represents the PWM signal from the EBTCM. The EBTCM reduces the traction control desired torque signal pulse width when a drive wheel slippage situation is detected. The ECM monitors the traction control desired torque signal and reduces drive wheel slippage as necessary by retarding spark timing.
|
|
TCM Torque Reduction
|
-
|
No
|
This parameter displays whether EBTCM has determined a reduction in torque took place.
|
|
Total Knock Retard
|
-
|
0 degrees
|
This parameter indicates how much ignition spark timing is being retarded due to all control systems monitored by the 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.
|
|
Throttle position
|
-
|
6%
|
This parameter displays the angle of the TP in percent. This information is calculated by the control module using the signals from the throttle position sensors. The scan tool will display a low percentage when the throttle plate is closed. The scan tool will display a high percentage when the throttle plate is fully open.
|
|
With Ignition On, Engine Off, Accelerator pedal not actuated
|
29%
|
||
|
With Ignition On, Engine Off, Accelerator pedal fully actuated
|
100%
|
||
|
Throttle Position Sensor 1
|
-
|
4.06 Volts
|
This parameter displays the voltage signal sent to the control module from the sensor used to monitor the position of the throttle plate. This parameter is for sensor 1 of the TP sensor assembly. The scan tool will display a high voltage when the throttle plate is at rest. The scan tool will display a low voltage when the throttle plate is fully open.
|
|
With Ignition On, Engine Off, Accelerator pedal not actuated
|
3.27 Volts
|
||
|
With Ignition On, Engine Off, Accelerator pedal fully actuated
|
0.80 Volts
|
||
|
Throttle Position Sensor 1 Learned Minimum
|
-
|
0.69 Volts
|
This parameter displays the learned minimum voltage for TP sensor 1 as determined by the control module this ignition cycle.
|
|
Throttle Position Sensors 1 and 2
|
-
|
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 when the signal from TP sensor 1 corresponds with the signal from TP sensor 2. The scan tool will display Disagree when the signal from TP sensor 1 conflicts with the signal from TP sensor 2.
|
|
Throttle Position Sensor 2
|
-
|
0.90 Volts
|
This parameter displays the voltage signal sent to the control module from the sensor used to monitor the position of the throttle plate. This parameter is for sensor 2 of the TP sensor assembly. The scan tool will display a low voltage when the throttle plate is at rest. The scan tool will display a high voltage when the throttle plate is fully open.
|
|
With Ignition On, Engine Off, Accelerator pedal not actuated
|
1.71 Volts
|
||
|
With Ignition On, Engine Off, Accelerator pedal fully actuated
|
4.16 Volts
|
||
|
Throttle Position Sensor 2 Learned Minimum
|
-
|
0.69 Volts
|
This parameter displays the learned minimum voltage for TP sensor 2 as determined by the control module this ignition cycle.
|
|
Traction Control Status
|
-
|
Inactive
|
This parameter displays Active if the electronic brake and traction control module (EBTCM) is commanding traction control.
|
|
Traction Control Torque Delivered Signal
|
-
|
%
|
Represents the PWM signal which indicates the available torque the engine is delivering to the drive wheels. The EBTCM monitors the Traction Control Torque signal to ensure that the ECM is responding properly to the Traction Control Desired Torque signal.
|
|
Traction Control Torque Request Signal
|
-
|
0%
|
Scan tool range 0-100 percent. Represents the PWM signal from the electronic brake and traction control module (EBTCM). The EBTCM reduces the Traction Control Desired Torque signal pulse width when a drive wheel slippage situation is detected. The ECM monitors the Traction Control Desired Torque signal and reduces drive wheel slippage as necessary by retarding spark timing, decreasing boost sol. PWM, or increasing air/fuel ratio. The ECM can also turn OFF up to three fuel injectors if the Traction Control Desired Torque signal indicates a large enough amount of drive wheel slippage.
|
|
-
|
FT-LBS
|
This parameter displays whether the transmission control module (TCM) is reducing torque.
|
|
|
Turbocharger Bypass Solenoid Valve Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the diagnostic state of the output driver for the turbocharger bypass solenoid. The scan tool will display OK if the circuit is operating correctly. The scan tool will display Fault if there is an open on the circuit.
|
|
Turbocharger Bypass Solenoid Valve Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the diagnostic state of the output driver for the turbocharger bypass solenoid. The scan tool will display OK if the circuit is operating correctly. The scan tool will display Fault if there is a short to ground on the circuit.
|
|
Turbocharger Bypass Solenoid Valve Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the diagnostic state of the output driver for the turbocharger bypass solenoid. The scan tool will display OK if the circuit is operating correctly. The scan tool will display Fault if there is a short to voltage on the circuit.
|
|
Turbocharger Bypass Solenoid Valve Command
|
-
|
On
|
This parameter shows the state of the turbocharger bypass solenoid. The scan tool shows either commanded on or off.
|
|
Turbocharger Wastegate Solenoid Valve Command
|
-
|
0%
|
This parameter shows the percent of the pulse width modulated (PWM) duty cycle that the wastegate solenoid is commanded.
|
|
Turbocharger Wastegate Solenoid Valve Control Circuit Open Test Status
|
-
|
OK
|
This parameter displays the diagnostic state of the output driver for the turbocharger wastegate solenoid. The scan tool will display OK if the circuit is operating correctly. The scan tool will display Fault if there is an open on the circuit.
|
|
Turbocharger Wastegate Solenoid Valve Control Circuit Low Voltage Test Status
|
-
|
OK
|
This parameter displays the diagnostic state of the output driver for the turbocharger wastegate solenoid. The scan tool will display OK if the circuit is operating correctly. The scan tool will display Fault if there is a short to ground on the circuit.
|
|
Turbocharger Wastegate Solenoid Valve Control Circuit High Voltage Test Status
|
-
|
OK
|
This parameter displays the diagnostic state of the output driver for the turbocharger wastegate solenoid. The scan tool will display OK if the circuit is operating correctly. The scan tool will display Fault if there is a short to voltage on the circuit.
|
|
Vehicle Speed Sensor
|
-
|
0 km/h/mph
|
The scan tool range is 0-200 km/h (0-125 mph). This parameter displays the vehicle speed. The ECM receives reference pulses from the vehicle speed sensor (VSS) and converts them into km/h and mph for display.
|
|
Volumetric Efficiency
|
-
|
15-22%
|
This parameter displays the calculated volumetric efficiency of the engine as calculated by the control module.
|
|
Warm-ups Since DTC Cleared
|
-
|
Varies
|
The scan tool displays a range of 0-255. This parameter counts the number of warm up cycles since a DTC was cleared from memory. The scan tool displays counts.
|
|
Wide Open Throttle
|
-
|
No
|
This parameter indicates the throttle status commanded by the control module. The scan tool will display YES if 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%.
|
Engine Control Module Scan Tool Output Controls
| Output Control | Description |
|
A/C Compressor Clutch Relay
|
Air Conditioning Compressor Clutch Enable; Air Conditioning Compressor Clutch ON
|
|
Camshaft Position Actuator
|
Exhaust Cam Phase Solenoid Bank 1 Enable; Exhaust Cam Phase Solenoid ON
|
|
CMP Actuator System
|
Intake Cam Phase Solenoid Bank 1 Enable; Intake Cam Phase Solenoid Bank 1 ON
|
|
Cooling Fan
|
Cooling Fan Speed Enable; Cooling Fan Speed
|
|
Cylinder Power Balance
|
Fuel Injector Enable; Fuel Injector ON
|
|
Engine Speed
|
Activates the control system for the throttle's activation (TAC) to change the engine rpm. Normal command status is None. To enable the RPM control, all instruction on the scan tool must be completed. The system will increase or decrease the RPM within a range of 400-2,000 RPM. The set step value changes the RPM by increments of 25 RPM, 100 RPM, and 500 RPM. The system remains in the commanded state until cancelled by the scan tool.
|
|
EVAP Service Bay Test
|
EVAP Service Test Trigger
|
|
EVAP Purge Solenoid Valve
|
Activates the purge solenoid in 10 percent increments from 0 to 100 percent. The device control will be aborted and inhibited if the fuel tank pressure (FTP) sensor exceeds -27 mm Hg (-14 in H2O).
|
|
Exhaust Camshaft Position Actuator
|
This function controls the exhaust camshaft position (CMP) actuator. The normal commanded state is 0 degrees. The system will INCREASE or DECREASE the exhaust camshaft timing by changing the duty cycle of the actuator in 5 degree increments up to 50 degrees. This also affects Desired Exh. CMP Angle.
|
|
Fuel Control Loop Status
|
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.
|
|
Fuel Pump
|
Activates the fuel pump relay for 2 seconds. Also turns fuel pump ON and OFF while engine is running.
|
|
Fuel Pressure Control
|
High Pressure Fuel Supply System Control - Demanded High Pressure
|
|
High Pressure Fuel Supply System Control - MSV Control At Engine Running "High Pressure Test"
|
|
|
Fuel Trim Enable
|
Disables the ECMs ability to learn new fuel trim parameters. The commanded states are NONE, ENABLED, DISABLED. The normal commanded state is NONE. The system remains in the commanded state until cancelled by the scan tool.
|
|
Fuel Trim Reset
|
Activates the reset of fuel trim data in all fuel trim cells.
|
|
Generator L-Terminal
|
Generator L-Terminal Enable; Generator L-Terminal ON
|
|
Intake Camshaft Position Actuator
|
This function controls the intake CMP actuator. The normal commanded state is 0 degrees. The system will INCREASE or DECREASE the intake camshaft timing by changing the duty cycle of the actuator in 5 degree increments up to 40 degrees. This also affects Desired Int. CMP Angle.
|
|
Malfunction Indicator Lamp (MIL)
|
Malfunction Indicator Lamp Enable; Malfunction Indicator Lamp ON
|
|
Spark Control
|
Enables or disables idle spark command. When commanded ON, the idle spark will be controlled to 13 degrees before top dead center. The normal commanded state is OFF.
|
|
Special Durations
|
Graphs the accumulated misfires occurring in each cylinder. The scan tool allows for a reset of the misfire graph.
|
|
Starter Relay Control
|
Starter Relay Enable Starter Relay ON
|
|
Throttle position
|
Operates TAC motor in 10 percent increments to open or close the throttle blade. The test operates during key ON, engine OFF.
|
|
Turbocharger Bypass Solenoid Valve
|
TC Bypass Solenoid Command ON/OFF
|
|
Turbocharger Wastegate Solenoid Valve
|
Wastegate Solenoid Command 0-100%
|
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