Engine 2 Data

ENGINE SPEED - RANGE 0-16384 RPM:
From the fuel control reference input, the PCM computes the Engine Speed. The engine speed should remain close to the desired idle under the various engine loads with the engine idling.

DESIRED IDLE - RANGE 0-3187 RPM:
The PCM commands the idle speed. The PCM compensates for the various engine loads in order to keep the engine at the desired idle speed.

ECT - RANGE -40°C-151°C (-40°F-304°F ):
The Engine Coolant Temperature (ECT) sensor sends the 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 the internal resistance as the temperature changes. When the sensor is cold meaning the internal resistance is high, the PCM monitors a high voltage which the PCM interprets as a cold engine. As the sensor warms meaning the internal resistance decreases, the voltage signal decreases. The PCM interprets the lower voltage as a warm engine.

IAT - Range -40°C-151°C (-4O°F-304°F ):
The PCM converts the resistance of the Intake Air Temperature (IAT) sensor to degrees in the same manner as the ECT sensor. The PCM uses the intake air temperature in order to adjust the fuel delivery and the spark timing according to the 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 the altitude changes. This value is updated when the ignition is turned ON and at a Wide Open Throttle (WOT).

TP SENSOR - RANGE 0-5.0 VOLTS:
The PCM uses the Throttle Position (TP) sensor in order to determine the amount of the throttle demanded by the vehicle's operator. The TP sensor reads between 0.360.96 volt at idle to above 4 volts at Wide Open Throttle (WOT).

TP ANGLE - RANGE 0-100%:
From the TP sensor voltage input, the PCM computes the Throttle Position. The TP angle will auto zero to 0 % at idle (TP voltage below 0.90 volt). The TP angle will read 100 % at Wide Open Throttle.

TOTAL MISFIRE - RANGE 0-255 COUNTS:
Indicates the total number of misfires that have been detected in all the cylinders after the 100 engine cycles. One cycle equals one complete 4 stroke cycle. The total misfire only increments during the steady state cruise conditions.

AIR FUEL RATIO - RANGE 0:1-25.5:1:
The Air Fuel Ratio indicates the air to fuel ratio based on the Oxygen Sensor (O2S 1) inputs. The PCM uses the fuel trims to adjust fueling in order to attempt to maintain an air fuel ratio of 14.7:1.

BASE PWM CYL. 1-4 - Range 0-999.9 mS:
Indicates the base Pulse Width Modulation (PWM) or ON time of the indicated cylinder 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 Table 016, 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.

AC 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.

AC HIGH SIDE - RANGE 0-5.0 VOLTS, 0-459 PSI: The A/C High Side displays the pressure value of the A/C refrigerant pressure sensor. The A/C High Side helps diagnose the DTC P0530.

AC RELAY - RANGE OFF / ON:
The A/C Relay represents the commanded state of the A/C clutch control relay. The A/C clutch should be engaged when the scan tool displays ON.

STEPPER CRUISE - RANGE DISABLE / ENABLED:
The Stepper Cruise display indicates if the PCM is allowing the cruise operation. The PCM has the ability to disable the 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 (I PC) (when equipped). Helpful with diagnosing Table 017 Cruise Control Diagnosis. Output Driver 1 - Range SHRT0OOOOOO0 OpenOOO00OO0 (binary dIsplay): Output driver modules 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.

OUTPUT DRIVER 2 - RANGE SHRTOOOOOOOO OpenOOOOOOOO (binary display): Output driver modules 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.

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 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 (I PC) to be displayed to the operator on the PC. If a valid combination of inputs is not seen by the PCM, Invalid will be displayed.

VEHICLE SPEED - RANGE 0-255 MPH, 0-255 km/h:
The vehicle speed sensor signal is converted into MPH/km/h 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.