Engine 2 Data
Engine Speed - Range 0-16384 RPMEngine Speed is computed by the PCM from the fuel control reference input. It should remain close to desired idle under various engine loads with the engine idling.
Desired Idle - Range 0-3187 RPM
The idle speed that is commanded by the PCM. The PCM will compensate for various engine loads to keep the engine at the desired idle speed.
ECT - Range -40°C- 215°C (-40°F- 419°F)
The Engine Coolant Temperature (ECT) sensor sends engine temperature information to the PCM. The PCM supplies 5 volts to the engine coolant temperature sensor circuit. The sensor is a thermistor which changes internal resistance as temperature changes. When the sensor is cold (internal resistance high), the PCM monitors a high voltage which it interprets as a cold engine. As the sensor warms (internal resistance decreases), the voltage signal will decrease and the PCM will interpret the lower voltage as a warm engine.
IAT - Range -40°C - 215°C (-40°F - 419°F)
The PCM converts the resistance of the Intake Air Temperature (IAT) sensor to degrees in the same manner as the ECT sensor. Intake air temp is used by the PCM to adjust fuel delivery and spark timing according to incoming air density.
MAP - Range 11-105 kPa, 0-5.0 Volts
The Manifold Absolute Pressure (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.
BARO - Range 11-105 kPa, 0-5.0 Volts
The Barometric Pressure (BARO) sensor measures the change in the intake manifold pressure which results from altitude changes. This value is updated at ignition "ON" and also at Wide Open Throttle (WOT).
TP Sensor - Range 0-5.0 Volts
The Throttle Position (TP) sensor is used by the PCM to determine the amount of throttle demanded by the operator of the vehicle. The TP sensor will read between 0.36-0.96 volt at idle to above 4 volts at Wide Open Throttle (WOT).
TP Angle - Range 0-100%
Throttle Position (TP) angle is computed by the PCM from the TP sensor voltage input. TP angle will auto zero to 0% at idle (TP voltage below 0.90 volt) and read 100% at Wide Open throttle (WOT).
Total Misfire - Range 0-255 counts
Indicates the total number of misfires that have been detected in all cylinders after 100 engine cycles (1 cycle equals the completion of a four stroke cycle). Only increments during steady state cruise conditions.
Air Fuel Ratio - Range 0:1 - 25.5:1
Indicates the air fuel ratio based on Oxygen Sensor (O2S 1) inputs. The PCM uses fuel trims to adjust fueling to attempt to maintain an air fuel ratio of 14.7:1.
Base PWM Cyl. 1 - Range 0-999.9 mS
Indicates the base Pulse Width Modulation (PWM) or "ON" time of the cylinder 1 injector in milliseconds. When the engine load is increased, the injector pulse width will increase.
Base PWM Cyl. 2- Range 0-999.9 mS
Indicates the base Pulse Width Modulation (PWM) or "ON" time of the cylinder 2 injector in milliseconds. When the engine load is increased, the injector pulse width will increase.
Base PWM Cyl. 3- Range 0-999.9 mS
Indicates the base Pulse Width Modulation (PWM) or "ON" time of the cylinder 3 injector in milliseconds. When the engine load is increased, the injector pulse width will increase.
Base PWM Cyl. 4- Range 0-999.9 mS
Indicates the base Pulse Width Modulation (PWM) or "ON" time of the cylinder 4 injector in milliseconds. When the engine load is increased, the injector pulse width will increase.
Engine Oil Level - Range Low/OK
Indicates whether the engine oil level is "Low" or "OK." Helpful in diagnosing Chart Cl6, 011 Level Input.
ECL - Range Low/OK
The Engine Coolant Level (ECL) is displayed as "Low" or "OK." Indicates whether the coolant in the radiator coolant surge tank is "Low" or "OK."
Engine Oil Pres. - Range Low/OK
The fuel pump and engine oil pressure switch sends an input to the PCM to indicate whether the engine oil pressure is "Low" or "OK."
A/C Request - Range Yes/No
Represents whether Air Conditioning (A/C) is being requested from the HVAC selector. The input is received by the Instrument Panel Cluster (IPC) and then sent over UART serial data to the PCM and finally to the scan tool over class 2 serial data.
A/C Highside - Range 0-5.0 Volts, 0-459 PSI
Displays the pressure value of the A/C refrigerant pressure sensor, helpful in diagnosing DTC P0530.
A/C Relay - Range Off/On
Represents the commanded state of the A/C clutch control relay. The A/C clutch should be engaged with "On" displayed.
FC Relay - Range Off/On
The Fan Control (FC) relay is commanded by the PCM. FC relay displays the command as "On" or "Off."
Stepper Cruise - Range Disabled/Enabled
This display indicates it the PCM is allowing cruise operation. The PCM has the ability to disable cruise control under certain conditions.
Cruise Engaged - Range Yes/No
Cruise engaged is an input from the cruise control module to the PCM and indicates if the cruise control system is in control of vehicle speed. The PCM uses this information to change transmission shift calibrations and to turn "ON" an indicator lamp on the Instrument Panel Cluster (IPC) (when equipped). Helpful with diagnosing Chart C17 Cruise Control Diagnosis.
Output Driver 1 - Range SHRT00000000
Open00000000 (binary display)
Output Driver Modules (ODMs) are used to allow various systems to function by providing a ground circuit. The scan tool will display "Os" in each of the 8 positions when the circuitry is OK. If a "1" appears in any of the positions, then either a short or open circuit is being detected. Refer to Chart C20, PCM Outputs, for further information.
Output Driver 2 - Range SHRT00000000
Open00000000 (binary display)
Output Driver Modules (ODMs) are used to allow various systems to function by providing a ground circuit. The scan tool will display "Os" in each of the 8 positions when the circuitry is OK. If a "1" appears in any of the positions, then either a short or open circuit is being detected. Refer to Chart C20, PCM Outputs, for further information.
PRNDL P A, B, C - Range High or Low
A transaxle mounted switch is used as an input to let the PCM know what position the gear select lever is in. The scan tool status will switch from "High" to "Low" as different combinations are met. In "Park," PRNDL P and A will be "Low" and B and C will be "High."
Trans. Range - Range
Park/Reverse/neutral/Overdrive/Drive 3/Drive 2/Low/Invalid
The scan tool displays the decoded position of the transmission range switch PRNDL inputs. This information is then sent by UART serial data to the Instrument Panel Cluster (IPC) to be displayed to the operator on the IPC. If a valid combination of inputs is not seen by the PCM, "Invalid" will be displayed.
Vehicle Speed - Range 0-255 MPH, 0255 km/h
The vehicle speed sensor signal is converted into MPH/km/h for display. The vehicle speed output from the PCM is 4000 pulses per mile. The scan tool uses the class 2 serial data from the PCM to obtain vehicle speed, while the instrument panel cluster, cruise control module and multi-function alarm module use the 4000 ppm output.
# of Curr. DTC's - Range 0-255
Indicates the total number of current Diagnostic Trouble Codes (DTCs) set. Does not necessarily mean the Malfunction Indicator Lamp (MIL) is illuminated.
Engine Run Time - Range 0:00:00-18:12:15
hours:minutes:seconds
A measure of how long the engine has been running. When the engine stops running, the timer is reset to zero.