For 1990-2009 cars

The Engine Scan Tool Data List contains all engine related parameters that are available on the scan tool. The list is arranged in alphabetical order. A 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 conditions are determined:

• | The Diagnostic System Check - Vehicle is completed.

• | There are no diagnostic trouble codes (DTCs).

• | The on-board diagnostics are functioning correctly.

Scan tool values from an engine that is operating correctly may be used for comparison with the engine you are diagnosing. The Engine Scan Tool Data List represents the values that would be seen on a normal operating engine.

Important: Do not use a scan tool that displays faulty data. The scan tool concern should be reported to the manufacturer. Use of a faulty scan tool may result in mis-diagnosis and unnecessary parts replacement.

Only the parameters listed below are referenced in this service information for use in diagnosis. If all values are within the typical range described below, refer to Symptoms - Engine Controls.

Scan Tool Parameter | Data List | Parameter Range/Units | Typical Data Values
--- | --- | --- | ---
Engine Idling/Radiator Hose Hot/Park or Neutral/Closed Loop/Accessories Off
5V Reference Voltage Circuit 1 |  | Valid | This parameter displays the voltage sensed on the 5-volt reference 1 circuit at the control module.
| Invalid
5V Reference Voltage Circuit 2 |  | Valid | This parameter displays the voltage sensed on the 5-volt reference 2 circuit at the control module.
| Invalid
A/C Cutoff Mode (Air Conditioning) |  | Inactive |
| Pressure
| Max. Acceleration
| Active
A/C Disengagement 1st History |  | Present | The parameter displays the last 8 air conditioning (A/C) compressor disengages in order from 1 to 8 with 8 being the most recent. There are about 8 possible causes for the A/C compressor to disengage.
| Not Present
A/C Disengagement 1st History |  | Present
| Not Present
A/C Disengagement 2nd History |  | Present
| Not Present
A/C Disengagement 3rd History |  | Present
| Not Present
A/C Disengagement 4th History |  | Present
| Not Present
A/C Disengagement 5th History |  | Present
| Not Present
A/C Disengagement 6th History |  | Present
| Not Present
A/C Disengagement 7th History |  | Present
| Not Present
A/C Disengagement 8th History |  | Present
| Not Present
A/C Pressure Sensor | -- | 0 - 3,450 kPa | This parameter displays the pressure from the A/C high side pressure sensor signal circuit to the control module.
A/C Pressure Sensor | -- | 0 - 5 Volts | The scan tool displays 0-5 Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
Accelerator Pedal Position Sensor 1-2 Correlation | -- | Okay | This parameter displays Disagree if the control module detects the signal voltage from APP sensor 1 is not in correct relationship to APP sensor 2. The scan tool displays Agree under the normal operating conditions.
-- | Not Okay
A/C Request (Air Conditioning) |  | Not Present | 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 scan tool will display Not Present indicates the control module is not receiving a request from the HVAC system to ground the A/C clutch relay control circuit.
Actual Torque | -- | 0 - 100 % | 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
Alternator F Terminal | 0 - 100 % |  | This parameter displays the commanded state of the generator by the control module. A High value indicates a high charging command, and a low value indicates a low charging command.
Alternator L Terminal Circuit | -- | On/Off | This parameter displays if the control module is allowing the generator to operate. The scan tool displays ON if the generator is allowed to operate. The scan tool displays OFF if the control module is disabling the generator.
Alternator L Terminal Duty Cycle | -- |  |
Amibent Temperature | -- | ° C | This parameter displays the ambient, outside, air temperature as calculated by the control module.
APP Sensor (Acceleration) | -- | 0 - 100 % | This parameter displays the position of the Accelerator Pedal as calculated by the Accelerator Pedal Position Sensor.
APP Sensor 1 (Accelerator Pedal Position) | -- | % | This parameter displays the voltage signal sent to the control module from accelerator pedal position (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 pressed to a high voltage when the accelerator pedal is fully pressed.
APP Sensor 1 (Accelerator Pedal Position) | -- | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
APP Sensor 1 (Accelerator Pedal Position) | -- | % | This parameter displays the angle of the accelerator pedal position (APP) sensor 1 as calculated by the control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.
APP Sensor 2 (Accelerator Pedal Position) | -- | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
APP Sensor 2 (Accelerator Pedal Position) | -- | % | This parameter displays the angle of the accelerator pedal position (APP) sensor 1 as calculated by the control module using the signal from the APP sensor 1. APP sensor 1 is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.
Auto Learn Counter |  | Counts |
Auto Learn Timer |  | h:m:s |
B1 Average Injection Time (Bank 1) |  | ms |
B1 Catalyst Temperature | -- | ° C | This parameter displays the B1 catalytic converter temperature as calculated by the control module.
B1 LTFT Cruise/Acceleration (Bank 1 Long Term Fuel Trim) |  | % | The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the control module. The scan tool will display of more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.
B1S1 O2 Sensor (Bank 1 Sensor 1) | -- | mV | This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
B1S1 O2 Sensor Heater (Bank 1 Sensor 1) | -- | On/Off | This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.
B1S1 O2 Sensor Heater Circuit Status (Bank 1 Sensor 1) | -- | Passed_Failed_Incomplete | This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.
B1S2 O2 Sensor (Bank 1 Sensor 2) |  | mV | This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor catalyst efficiency for cylinder bank 1. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
B1S2 O2 Sensor Heater (Bank 1 Sensor 2) |  | On/Off | This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
B1S2 O2 Sensor Heater Circuit Status (Bank 1 Sensor 2) |  | Passed_Failed_Incomplete | This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.
B2 Average Injection Time (Bank 2) |  | ms |
B2 Catalyst Temperature (Bank 2) | -- | ° CA | This parameter displays the B1 catalytic converter temperature as calculated by the control module.
B2 LTFT Cruise/Acceleration (Bank 2 Long Term Fuel Trim) | -- | 0 - 100 % | The scan tool displays in %. This parameter is the long term fuel trim for this bank as calculated by the control module. The scan tool will display of more than 0 percent indicating that time is being added to the injector pulse width, increasing the amount of fuel to this bank of the engine. The scan tool will display a value of less than 0 indicating time is being subtracted from the injector pulse width, reducing the amount fuel to this bank of the engine. A value of 0 percent indicates no compensation is required to operate the engine at the desired air/fuel ratio.
B2 Short Term Fuel Trim (Bank 2) | -- | 0 - 100 % |
B2S1 O2 Sensor (Bank 2 Sensor 1) | -- | mV | This parameter displays the voltage from the signal produced by the heated oxygen sensor used to monitor fuel trim for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
B2S1 O2 Sensor Heater (Bank 2 Sensor 1) | -- | On/Off | This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
B2S1 O2 Sensor Heater Circuit Status (Bank 2 Sensor 1) | -- | Passed_Failed_Incomplete | This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.
B2S2 O2 Sensor (Bank 2 Sensor 2) |  | mV | This parameter displays the voltage from the signal produced by the heated oxygen sensor used to catalyst efficiency for cylinder bank 2. The scan tool will display a low voltage reading when that cylinder bank is running lean. The scan tool will display a high voltage reading when that cylinder bank is running rich.
B2S2 O2 Sensor Heater (Bank 2 Sensor 2) |  | On/Off | his parameter displays the commanded state of the bank 2 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
B2S2 O2 Sensor Heater (Bank 2 Sensor 2) |  | mA |
B2S2 O2 Sensor Heater Circuit Status (Bank 2 Sensor 2) |  | Passed_Failed_Incomplete | This parameter displays the commanded state of the bank 2 sensor 2 heater by the control module. The scan tool will display ON when the heater is commanded ON. The scan tool will display OFF when the heater is commanded OFF.
Barometer Pressure | -- | kPa | This parameter displays the barometric pressure as calculated by the control module using the signal from the manifold absolute pressure (MAP) sensor measured when the ignition is turned on with the engine not running. The control module will update the barometric pressure during wide-open throttle (WOT) conditions. The scan tool will display a low value when the barometric pressure is low, and a high value when the barometric pressure is high.
Brake Lamp Switch | -- | Active/Inactive | This parameter displays the state of the brake pedal as determined by the control module based on an input from the stop lamp pedal switch. This switch turns on the stop lamps when the brake pedal is depressed. The scan tool will display Active when the brake pedal is depressed.
Calculated Air Flow | -- | g/s |
Calculated APP Sensor 1 (Accelerator Pedal Position) | -- | 0 - 100 % | This parameter displays the angle of the throttle position (TP) sensor 1 in percent. This information is calculated by the control module using the signal from the throttle position sensor 1. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.
Calculated APP Sensor 2 (Accelerator Pedal Position) | -- | 0 - 100 % | This parameter displays the angle of the throttle position (TP) sensor 2 in percent. This information is calculated by the control module using the signal from the throttle position sensor 2. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.
Calculated Pedal Position | -- | 0 - 100 % | This parameter displays the angle of the accelerator pedal as calculated by the control module using the signals from the accelerator pedal position sensors. The APP indicated angle is a range of values indicating a low percentage when the accelerator pedal is not pressed to a high percentage when the accelerator pedal is fully pressed.
Calculated Throttle Position | -- | 0 - 100 % | This parameter displays the angle of the throttle position (TP) sensor in percent. This information is calculated by the control module using the signal from the throttle position sensor. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.
Camshaft Active Counter | -- | Counts | This parameter displays an incrementing counter when the control module receives a signal form the camshaft position (CMP) sensor.
Camshaft Sensor Engine Speed | -- | RPM | This parameter displays the speed of the engine as calculated by the signal from the camshaft position (CMP) sensor.
Catalyst Protection Mode | -- | No_Yes | This parameter displays if the control module is commanding catalytic converter protection.
CC Disengagement 1st History | -- | On/Off | The parameter displays the last 8 cruise control disengages in order from 1 to 8, with 8 being the most recent. There are about 33 possible causes for the cruise control to disengage.
CC Disengagement 2nd History | -- | On/Off
CC Disengagement 3rd History | -- | On/Off
CC Disengagement 4th History | -- | On/Off
CC Disengagement 5th History | -- | On/Off
CC Disengagement 6th History | -- | On/Off
CC Disengagement 7th History | -- | On/Off
CC Disengagement 8th History | -- | On/Off
Clutch Pedal Start Switch | -- | Inactive_Active | This parameter displays the state of the clutch pedal as determined by the control module from the clutch start switch.
Clutch Pedal Switch | -- | Inactive_Active | This parameter displays the current state of the clutch pedal as determined by the control module.
Cold Start Up | -- | Yes/No | This parameter indicates whether the engine meets the conditions for a cold start-up during the present ignition cycle. The scan tool displays Yes when the conditions for a cold start-up are met during this ignition cycle. The scan tool displays No when the conditions for a cold start-up are not met during the present ignition cycle. Conditions for a cold start-up 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.
Commanded Air/Fuel Equivalence Ratio | -- | 0.0:1 | This parameter displays the ratio of air to fuel as calculated by the control module based on various sensor inputs. The scan tool will display a lower air fuel ratio when a richer air to fuel mixture is commanded. The scan tool will display a higher air fuel ratio when a leaner air to fuel mixture is commanded. In closed loop operation the air fuel ratio should normally be around 14.2-14.7 to 1.
Commanded B1S1 O2 Sensor Heater (Bank 1 Sensor 1) | -- | 0 - 100 % | This parameter displays the commanded state of the bank 1 sensor 1 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
Commanded B1S2 O2 Sensor Heater (Bank 1 Sensor 2) | -- | 0 - 100 % | This parameter displays the commanded state of the bank 1 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
Commanded B2S1 O2 Sensor Heater (Bank 2 Sensor 1) | -- | 0 - 100 % | This parameter displays the commanded state of the bank 2 sensor 1 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
Commanded B2S2 O2 Sensor Heater (Bank 2 Sensor 2) | -- | 0 - 100 % | This parameter displays the commanded state of the bank 2 sensor 2 heater by the control module. The scan tool will display a higher value as the heater command is increased, and a lower value if the heater is not commanded ON.
Coolant Temperature | -- | Degrees | This parameter displays the temperature of the engine coolant based on a voltage input from the engine coolant temperature (ECT) sensor to the control module. The scan tool will display a low value when the coolant temperature is low, and a high value when the coolant temperature is high.
Crank Request | -- | Active/Inactive | This parameter displays whether the ignition switch has been cycled to the crank position requesting the control module to activate the starter relay.
Crankshaft Active Count | -- | Counts | This parameter displays an incrementing counter when the control module receives a signal from the crankshaft position (CKP) sensor.
Crankshaft Resynchronise | -- | Counts | This parameter displays the number of times the control module re-syncs with the crankshaft position (CKP) sensor.
Crankshaft Speed | -- | RPM | This parameter displays the engine speed as calculated by the control module using the signal form the crankshaft position (CKP) sensor.
Cruise Control | -- | On/Off | This parameter displays the status of the cruise control system as determined by the control module. The scan tool will display On when the cruise control system is in control of vehicle speed. The scan tool will display Off when the cruise control system is not operating.
Cruise Control Active | -- | Yes/No | 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.
Cruise Control Cancel | -- | Active/Inactive | This parameter displays the status of the Cruise Control Cancel.
Cruise Resume/Acceleration Switch | -- | Active/Inactive | This parameter displays the status of the Cruise Resume/Acceleration switch.
Cruise Set / Decel Switch | -- | Active/Inactive | This parameter displays the status of the Cruise Set/Deceleration switch.
Cycles of Misfire | -- | Counts | This parameter displays the number of cylinder firing events that were recorded as misfires as determined by the control module.
Cylinder 1 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 1 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 1 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 2 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 2 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 2 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 3 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 3 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 3 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 4 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 4 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 4 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 5 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 5 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 5 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 6 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 6 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 6 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 7 Ignition Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 7 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 7 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Cylinder 8 Injector Circuit Status | -- |  | This parameter displays the state of the fuel injector control circuit. The parameter displays Fault if the fuel injector control circuit is open, shorted to ground, or shorted to voltage. This parameter displays indeterminate until the control circuit has been commanded ON.
Cylinder 8 Injector Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the injector control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Cylinder 8 Knock Detected | -- | Yes/No | This parameter displays the knock retard as commanded by the control module for cylinders 1-6. Each cylinder is controlled individually based on both knock sensor signal inputs.
Dec. Fuel Cutoff (Deceleration) | -- | Active/Inactive | This parameter displays the status of the operating mode of the control module used to turn off the fuel injectors and the evaporative emission (EVAP) canister purge valve during certain deceleration conditions.
Desired Engine Idle Speed | -- | RPM | This parameter displays the desired engine idle speed as commanded by the control module.
Desired Throttle Position | -- | 0 - 100 % | This parameter displays the angle of the throttle position (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 plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.
Distance Since DTC Cleared | -- | Km | 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.
ECM Immobilised | -- | No_Yes | The scan tool displays Yes or No. The scan tool displays Yes if the body control module (BCM) and the control module lose communications with each other after the BCM sends the correct password. The scan tool displays No if the BCM is communicating the correct password to the ECM.
Engine Control Ignition Relay | -- | On/Off | This parameter displays the state of the control circuit control module power relay as commanded by the control module. The scan tool displays ON with the engine running.
Engine Control Ignition Relay Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the EC Ignition Relay control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Engine Control Ignition Relay Feedback | -- | V | This parameter displays the voltage available at the EC ignition relay pin of the control module.
Engine Load | -- | % | This parameter displays the calculated engine load in percent based on inputs to the control module from various engine sensors.
Engine Oil Life Remaining | -- | 0 - 100 % | This parameter displays the percent of engine oil life remaining. The controller calculates the engine oil life by monitoring engine load, coolant temperature, and engine speed.
Engine Oil Pressure | -- | kPa | This parameter displays the engine oil pressure.
Engine Oil Pressure Sensor | -- | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
Engine Oil Temperature | -- | Degree | This parameter displays the temperature of the engine oil.
Engine Run Time | -- | hh:mm:ss | 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 as soon as the engine stops running.
Engine Speed | -- | RPM | This parameter displays the speed of the crankshaft as calculated by the control module based on inputs from the Crankshaft Position (CKP) Sensor. The scan tool will display the engine speed in revolutions per minute (RPM).
Engine Speed Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the engine speed circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly.
EVAP Purge Solenoid (Evaporative Emission) | -- | % | This parameter displays the on-time or duty cycle of the EVAP canister purge solenoid commanded by the control module. Zero percent indicates no purge. One hundred percent indicates full purge.
EVAP Purge Solenoid Valve Circuit Status (Evaporative Emission) | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the evaporative emission purge solenoid control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
Fan Relay 1 | -- | On/Off | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.
Fan Relay 1 Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.
Fan Relay 2 and 3 | -- | On/Off | This parameter displays the control module commanded state of the fan relay control circuit.
Fan Relay 2 and 3 Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the state of the fan relay control circuit. The parameter displays Fault if the fan relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the relay control circuit has been commanded ON.
Fuel Level | -- | 0 - 100 % | This parameter displays the amount of fuel remaining in tall of the fuel tanks of the vehicle as a percentage. The control module calculates this level using the signals from the sensors used to monitor the fuel level in the fuel tanks. The scan tool will display a low reading when the total fuel level in the vehicle 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 1 (Right) | -- | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
Fuel Level Sensor 2 (left) | -- | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
Fuel Pump Relay | -- | On/Off | 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 System Status | -- | Closed Loop_Open Loop | The scan tool displays Open Loop or Closed Loop. The scan tool displays Closed Loop if the control module is controlling the fuel delivery according to the heated oxygen sensor (HO2S) voltages. The scan tool displays open loop if the control module is not adjusting for HO2S inputs. In open loop the control module bases fuel deliver on throttle position, engine coolant temperature, and mass airflow sensor inputs.
Fuel Pump Relay Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the state of the fuel pump relay control circuit. The parameter displays Fault if the fuel pump relay control circuit is open, shorted to ground, or shorted to voltage. The parameter displays Indeterminate until the circuit has been commanded ON.
Fuel Trim Cell | -- | Index | This parameter displays the fuel trim cell as calculated by the control module based on many sensor inputs. The fuel trim cell indicates which cell is currently active.
Fuel Trim Learn | -- | Enable/Disable | The scan tool displays Enabled or Disabled. When conditions are appropriate for enabling long term fuel trim corrections, the scan tool displays Enabled. If the scan tool displays Disabled, then long term fuel trim will not respond to changes in short term fuel trim.
Hot Open Loop | -- | Inactive_Active | This parameter indicates the status of the fuel delivery system. The scan tool will display Active if the fuel system is running in Open Loop due to a temperature concern. The scan tool will display Inactive if the fuel system is operating normally.
Ignition Accessory Signal | -- | On/Off | This parameter displays the state of the ignition input to the control module from the ignition switch. The scan tool will display ON when the ignition switch is in the ignition accessory position. The scan tool will display OFF when the ignition switch is in any other position.
Ignition Voltage | -- | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
Injector 1 Disabled Due | -- | Yes/No |
Injector 2 Disabled Due | -- | Yes/No |
Injector 3 Disabled Due | -- | Yes/No |
Injector 4 Disabled Due | -- | Yes/No |
Injector 5 Disabled Due | -- | Yes/No |
Injector 6 Disabled Due | -- | Yes/No |
Injector 7 Disabled Due | -- | Yes/No |
Injector 8 Disabled Due | -- | Yes/No |
Intake Air Temp | -- | Degrees | This parameter displays the temperature of the intake air calculated by the control module based on the input from the intake air temperature (IAT). The scan tool will display a low value for a low intake air temperature, and a high value for a high intake air temperature.
Knock Retard | -- | Degrees | The scan tool displays in °. This parameter indicates the amount of timing retard commanded by the control module. The scan tool will display a lower value if no knock is detected, and a higher value as more knock is detected and the control module retards the ignition timing.
MAF Performance Test (Mass Air Flow) | -- | Okay_Fail |
Malfunction Indicator (MI) | -- | On_Off | This parameter displays the commanded state of the malfunction indicator lamp (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.
Malfunction Indicator (MI) Circuit Status | -- | Passed_Failed_Incomplete | This parameter displays the status of the output driver for the malfunction indicator lamp control circuit. The scan tool will display Passed, Failed or Incomplete. The scan tool will display Pass/Fail if the circuit is operating correctly. The scan tool will display Incomplete if there is an open, short to ground, or a short to voltage on the circuit.
Manifold Absolute Pressure | -- | kPa | The scan tool displays kPa. This parameter displays the pressure inside of the intake manifold as calculated by the control module based on the input from the MAP sensor. The scan tool will display a high value at cruising speed or wide open throttle (WOT). The scan tool will display a low value at idle speed.
Mass Air Flow Sensor | -- | Hz | The scan tool displays in Hz. This parameter indicates the frequency signal sent from the MAF sensor to the control module. the scan tool will display a high value indicates a higher engine speed. The scan tool will display a low value at idle.
MI Requested by DTC (Malfunction Indicator) | -- | No_Yes | This parameter indicates the reason the control module illuminated the MIL. The scan tool will display YES when the MIL is requested as a result of an A or B type DTC. The scan tool will display NO if the MIL is illuminated for another reason, such as transmission DTCs.
Misfire Current Cylinder 1 | -- | (#) | The scan tool will display in counts. This parameter indicates the number of cylinder firing events detected as possible misfires on each cylinder during the last 200 crankshaft revolutions as calculated by the control module. The scan tool will display a low number for a low number of cylinder misfire events. The scan tool will display a high number for a high number of cylinder misfire events.
Misfire Current Cylinder 2 | -- | (#)
Misfire Current Cylinder 3 | -- | (#)
Misfire Current Cylinder 4 | -- | (#)
Misfire Current Cylinder 5 | -- | (#)
Misfire Current Cylinder 6 | -- | (#)
Misfire Current Cylinder 7 | -- | (#)
Misfire Current Cylinder 8 | -- | (#)
Misfire History Cylinder 1 | -- | (#) | The scan tool displays in counts. This parameter displays the total level of cylinder misfires that have been calculated for each cylinder by the control module. This parameter will not update or show activity until a misfire DTC has become active. The misfire history counters will update every 200 cylinder firing events.
Misfire History Cylinder 2 | -- | (#)
Misfire History Cylinder 3 | -- | (#)
Misfire History Cylinder 4 | -- | (#)
Misfire History Cylinder 5 | -- | (#)
Misfire History Cylinder 6 | -- | (#)
Misfire History Cylinder 7 | -- | (#)
Misfire History Cylinder 8 | -- | (#)
Number of Warm-ups Since DTC Cleared | -- | Counts | This parameter indicates the number of warm-up cycles that have occurred Since DTCs were cleared. The scan tool will display a higher counts as more warm-up cycles have occurred since the DTCs were cleared
Oil Change Symbol | -- | On_Off |
Oil Level | -- | Normal_Low | This parameter displays the state of the engine oil level switch as determined by the control module. The scan tool will display Normal or Low. OK indicates that the engine oil level is not too low for safe operation of the engine. Low indicates the engine oil level is abnormally low and has closed the engine oil level switch.
Oil Temperature Sensor | -- | °C | This parameter displays the engine oil pressure.
Power Enrichment | -- | Active/Inactive | Scan tool displays ACTIVE or INACTIVE. ACTIVE displayed indicates that the control module has detected conditions appropriate to operate in Power Enrichment mode. The control module commands Power Enrichment mode when a large increase in throttle position and load is detected. While in Power Enrichment, the control module will increase the amount of fuel delivered by entering Open Loop and increasing the injector pulse width.
Powertrain Immobiliser Status | -- |  |
Reduced Engine Power | -- | Active/Inactive | The scan tool displays Active or Inactive. The scan tool displays Active when the control module receives a signal from the throttle actuator control (TAC) module that a TAC system fault is occurring. The scan tool displays inactive when the engine is operating normally.
Requested Torque | -- | 0 - 100 % | This parameter indicates the percentage of available torque requested from the engine to the transmission as calculated by the control module. The scan tool will display a higher value for higher torque, and a lower value for lower torque.
Security Code Accepted | -- | Yes_No |
Security Code Lockout | -- | Active_Inactive |
Security Code Programmed | -- | Yes_No |
Spark Advance | -- | Degrees CA | This parameter displays the amount of spark advance the control module is commanding on the ignition control circuits. The control module determines the desired advance.
Start-Up ECT | -- | °C | This parameter indicates the engine coolant temperature at start-up, as calculated by the control module based on the input from the engine coolant temperature sensor. The scan tool will display a higher value at higher engine start-up temperatures, and a lower value at lower start-up temperatures.
Start-Up IAT | -- | °C | Indicates the intake air temperature (IAT) at the time that the vehicle was started. Used to determine if the last start-up was a cold start. The scan tool range is -39 to +140°C (-38 to +284°F). This parameter indicates the ambient air temperature at start-up.
Starter Relay | -- | On/Off | This parameter displays the control modules commanded state of the starter motor relay control circuit.
Starter Relay Circuit Status | -- | Incomplete_Pass_Fail | This parameter displays the status of the output driver for the starter relay control circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly. The scan tool will display a fault if there is an open, short to ground, or a short to voltage on the circuit.
TAC Forced Engine Shutdown (Throttle Actuator Control) | -- | No_Yes | 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 (Throttle Actuator Control) | -- | Enabled_Disabled | This parameter indicates the status of the TAC motor driver. 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 Motor Command (Throttle Actuator Control) | -- | % | This parameter indicates the required duty cycle to maintain a desired throttle position. The scan tool will display a higher value if more effort is required to move the throttle to the desired position, such as physical resistance. The scan tool will display a lower value if less effort is required to move the throttle to the desired position.
Torque Management Spark Retard | -- | °CA | his parameter indicates how much the ignition spark timing is being retarded to control torque by the control module. The scan tool will display a higher value under extreme torque control conditions such as spinning wheels. The scan tool will display a lower value under low torque control conditions such as light driving.
Total Knock Retard |  | Degrees CA | 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.
Total Misfire |  | (#) | 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.
TP Sensor 1 (Throttle Position) |  | 0 - 100 % | This parameter displays the angle of the throttle position (TP) sensor 1 in percent. This information is calculated by the control module using the signal from the throttle position sensor 1. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.
TP Sensor 1 (Throttle Position) |  | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
TTP Sensor 1- 2 Correlation (Throttle Position) |  | Okay_Not Okay | This parameter displays the results of a control module test that compares signals from the throttle position (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.
TP Sensor 1 Learned Lower Position (Throttle Position) |  | V | This parameter displays the learned minimum value of TP sensor 1 as recorded by the control module during the last learn procedure.
TP Sensor 2 (Throttle Position) |  | % | This parameter displays the angle of the throttle position (TP) sensor 2 in percent. This information is calculated by the control module using the signal from the throttle position sensor 2. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.
TP Sensor 2 (Throttle Position) |  | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
TP Sensor 2 Learned Lower Position (Throttle Position) |  | Volts | The scan tool displays 0-?? Volts. The scan tool displays approximately ?? Volts when the ignition is ON.
Transmission Gear |  | P-N_In Gear | This parameter indicates the current state of the gear select switch on the transmission/transaxle as calculated by the control module based on the TR switch. The scan tool status will switch from High to Low as different combinations are met. On the scan tool in Park, the PRNDL would read P and A will be Low, and B and C will be High.
Transmission Oil Temperature |  | °C |
Vehicle Speed |  | Km/h | This parameter indicates the vehicle speed calculated by the control module based on an input from the vehicle speed sensor (VSS). the scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.
Vehicle Speed Circuit Status |  |  | This parameter displays the status of the Vehicle Speed Circuit. The scan tool will display OK, Incomplete, Short B+, Short Gnd/Open. The scan tool will display OK/Incomplete if the circuit is operating correctly.
Warm-ups without Emission Related DTC's |  | (w/o unit) | Faults: The scan tool displays in counts. This parameter counts the number of warm-up cycles without an emission fault present. The parameter increments until a fault occurs. If a fault occurs, the counter reverts to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0.
Warm-ups without Non-Emission Related DTC'S |  | (w/o unit) | The scan tool displays in counts. This parameter counts the number of warm-up cycles without a non-emission fault present. The parameter increments until a fault occurs. If a fault occurs, the counter reverts to 0 until the fault is corrected. Clearing information with a scan tool or a loss of power to the ECM also resets the counter to 0.
Wide Open Throttle |  | No_Yes | This parameter indicates the throttle status commanded by the control module. The scan tool will display YES is 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 percent.