Scan Tool Data Definitions 3.8L
1-2 Shift Error: Displays a range of -6.38 to +6.38 seconds. This parameter
is the difference between the desired 1-2 shift time and the actual 1-2 shift
time. A positive number indicates a firm or fast shift (the actual shift
time was shorter than the desired shift time). A negative number indicates
a soft or slow shift (the actual shift time was longer than the desired
shift time). This value is only accurate if the shift was adaptable.
1-2 Shift Time: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last 1-2 shift. The shift time is based on the engine
RPM drop after the commanded 1-2 shift. This value is only accurate if
the shift was adaptable.
1-2 Sol.: Displays ON or OFF. This parameter is the commanded state of the
1-2 shift solenoid valve. ON represents a commanded energized state (current
is flowing through the solenoid). OFF represents a non-commanded state
(current is not flowing through the solenoid).
1-2 Sol. Open/Short to GND: Displays Yes or No. This parameter indicates if an open or short
to ground exists in the 1-2 shift solenoid valve feedback signal to the PCM.
This parameter is valid only when the 1-2 shift solenoid is commanded OFF.
1-2 Sol. Short to Volts: Displays Yes or No. This parameter indicates if a short to voltage
exists in the 1-2 shift solenoid valve feedback signal to the PCM. This parameter
is valid only when the 1-2 shift solenoid is commanded ON.
1-2 Tap Cell (4-16): Displays kPa or psi. This parameter displays the amount of pressure
varied from a calibrated base line pressure for shifts. Each TAP Cell is based
on a calibrated shift torque value. Each TAP Cell value is calculated from
the last shift time. This cell pressure is used in addition to the calibrated
base line pressure to adjust the apply of a clutch or band during the next
shift.
2-3 Shift Error: Displays a range of -6.38 to +6.38 seconds. This parameter
is the difference between the desired 2-3 shift time and the actual 2-3 shift
time. A positive number indicates a firm or fast shift (the actual shift
time was shorter than the desired shift time). A negative number indicates
a soft or slow shift (the actual shift time was longer than the desired
shift time). This value is only accurate if the shift was adaptable.
2-3 Shift Time: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last 2-3 shift. The shift time is based on the engine
RPM drop after the commanded 2-3 shift. This value is only accurate if
the shift was adaptable.
2-3 Sol.: Displays ON or OFF. This parameter is the commanded state of the
2-3 shift solenoid valve. ON represents a commanded energized state (current
is flowing through the solenoid). OFF represents a non-commanded state
(current is not flowing through the solenoid).
2-3 Sol. Open/Short to GND: Displays Yes or No. This parameter indicates if an open or short
to ground exists in the 2-3 shift solenoid valve feedback signal to the PCM.
This parameter is valid only when the 2-3 shift solenoid is commanded OFF.
2-3 Sol. Short to Volts: Displays Yes or No. This parameter indicates if a short to voltage
exists in the 2-3 shift solenoid valve feedback signal to the PCM. This parameter
is valid only when the 2-3 shift solenoid is commanded ON.
2nd Gear Start: Displays Yes or No. This parameter indicates when a 2nd gear start
has been requested. When Yes is displayed, the PCM de-energizes the 1-2 shift
solenoid and the vehicle starts off in 2nd gear for increased traction
in slippery conditions (following gears will shift as normal). A hard acceleration
condition (wide open throttle) overrides the 2nd gear start and the vehicle
starts off in 1st gear.
3-2 Downshift Sol.: Displays On or Off. This parameter indicates if the 3-2 shift solenoid
valve assembly is currently commanded On or Off. The solenoid commanded state
is based on the transmission temperature. The solenoid will change states
during a 3-2 downshift to regulate the appropriate pressure. The commanded
state of the solenoid occurs at approximately 30 mph with a throttle
increase.
3-2 Sol. Open/Short to GND: Displays Yes or No. This parameter indicates if an open or short
to ground exists in the 3-2 shift solenoid valve assembly feedback signal
to the PCM. This parameter is valid only when the 3-2 shift solenoid is
commanded Off.
3-2 Sol. Short to Volts: Displays Yes or No. This parameter indicates if a short to voltage
exists in the 3-2 shift solenoid valve assembly feedback signal to the PCM.
This parameter is valid only when the 3-2 shift solenoid is commanded On.
3-4 Shift Error: Displays a range of -6.38 to +6.38 seconds. This
parameter is the difference between the desired 3-4 shift time and the actual
3-4 shift time. A positive number indicates a firm or fast shift (the actual
shift time was shorter than the desired shift time). A negative number
indicates a soft or slow shift (the actual shift time was longer than the
desired shift time). This value is only accurate if the shift was adaptable.
3-4 Shift Time: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last 3-4 shift. The shift time is based on the engine
RPM drop after the commanded 3-4 shift. This value is only accurate if
the shift was adaptable.
Adaptable Shift: Displays Yes or No. Yes indicates that the proper operating conditions
were all within the proper operating range during the last shift and that
the shift time was accurate. This shift information is then used through
the adaptive function in order to update the adapt cells. No indicates
that not all of the operating conditions were met in order to enable this
function and that the adapt cells were not updated.
APP Average: Displays a range of 0-125 counts. The TAC module takes
the voltages from the three APP sensors, averages them and converts them into
counts. This average is displayed on the scan tool. The average will be
different on every vehicle.
APP Indicated Angle: Displays a range of 0-100%. This parameter indicates the
accelerator pedal position in percentage. When the APP is at rest, 0% is indicated.
When the APP is fully depressed, 100% is indicated.
Current Gear: Displays 1, 2, 3 or 4. This parameter indicates the current commanded
state of the shift solenoids.
Current TAP (Transmission Adaptive Pressure) Cell: Displays a TP cell range of 0-16. This parameter indicates
the current throttle position cell used for line pressure modification (adaptation).
Current TAP (Transmission Adaptive Pressure) Memory: Displays a range of -16 to +16 psi. This parameter
is the amount of pressure that is added to base line pressure to adjust the
holding effort of a clutch or band, while shifting.
ECT (Engine Coolant Temperature): Displays a range of -40°C to 151°C (-40°F
to 304°F). This parameter is the input signal of the engine coolant temperature
sensor. The engine coolant temperature is high (151°C) (304°F)
when the signal voltage is low (0 V), and the engine coolant temperature
is low (-40°C) (-40°F) when the signal voltage is high
(5 V).
Engine Run Time: Displays a range of 0:00:00-18:12:15 hr/min/sec. This
parameter measures how long the engine has been operating. When the ignition
switch is turned OFF, the value is reset to zero.
Engine Speed: Displays a range of 0-8192 RPM. This parameter indicates
the rotational speed of the engine expressed as revolutions per minute.
Engine Torque: Displays a range of 0-9999 lb ft. This parameter
indicates the amount of torque that is delivered from the engine.
Estimated Gear Ratio: Displays a range of 0.00:1 to 8.00:1. This parameter indicates
the estimated turbine speed divided by the transmission output speed. Estimated
turbine speed is calculated from engine speed and engine torque.
IAT (Intake Air Temperature): Displays a range of -40°C to 215°C (-40°F
to 419°F). The IAT sensor is a thermistor that is used to monitor the
temperature of the air entering the intake manifold. The PCM applies 5 volts
to the sensor on a 5 volt reference circuit. When the air is cool,
the resistance in the sensor will be high. If the air is warm, the sensor
resistance will be low and the PCM will sense a low voltage signal. The
PCM converts the signal of the IAT sensor to degrees Celsius. Intake air
temperature is used by the PCM to adjust fuel delivery and spark timing.
Ignition Voltage: Displays a range of 0.0-25.5 V. This represents the
system voltage measured by the PCM at it's ignition feed.
PC Sol. Actual Current: Displays a range of 0.00-1.10 amps. This parameter
is the actual current of the pressure control solenoid circuit at the control
module. Zero amp (no current flow) indicates actual higher line
pressure. Actual lower line pressure is indicated by 1.1 amps (high
current flow).
PC Solenoid Duty Cycle: Displays a range of 0-100%. This parameter is the commanded
state of the pressure control solenoid expressed as a percent of energized
ON time. Zero percent indicates zero ON time (non-energized) or no current
flow. Approximately 60% at idle indicates maximum ON time (energized) or
high current flow.
PC Sol. Ref. (Reference) Current: Displays a range of 0.00-1.10 amps. This parameter
is the commanded current of the pressure control solenoid circuit. Zero amp
(no current flow) indicates commanded higher line pressure. Commanded lower
line pressure is indicated by 1.1 amps (high current flow).
Speed Ratio: Displays a range of 0.00:1-8.00:1. This parameter indicates
engine speed divided by transmission output speed. This value is used to estimate
transmission gear ratio.
TCC Brake Switch: Displays Open or Closed. This parameter indicates the state of
the brake switch circuit input. Open indicates a zero voltage input (brake
switch open, brake pedal applied). Closed indicates a B+ voltage input
(brake switch closed, brake pedal released).
TCC Duty Cycle: Displays a range of 0-100%. This parameter is the commanded
percentage of ON time of the TCC PWM solenoid. Approximately 90 percent
represents an ON (energized) commanded state. Zero percent represents
an OFF (non-energized) commanded state. This commanded state is applied
at a vehicle speed between approximately 0-16 km/h (0-10 mph).
TCC Duty Cycle Open/Short to GND: Displays Yes or No. This parameter indicates whether an open or
a short to ground exists in the TCC PWM solenoid valve feedback signal
to the PCM. This parameter is valid only when the TCC PWM solenoid
is commanded OFF (duty cycle is 0%).
TCC Duty Cycle Short to Volts: Displays Yes or No. This parameter indicates whether a short to
voltage exists in the TCC PWM solenoid valve feedback signal to the
PCM. This parameter is valid only when the TCC PWM solenoid is commanded
ON (duty cycle is at maximum).
TCC Enable: Displays Yes or No. This parameter is the commanded state of the
TCC solenoid. Yes indicates a commanded energized state (current is flowing
through the solenoid). No indicates a commanded non-energized state (current
is not flowing through the solenoid). This commanded state occurs at various
vehicle speeds between applications.
TCC Enable Open/Short to GND: Displays Yes or No. This parameter indicates whether an open or
a short to ground exists in the TCC solenoid valve feedback signal to the
PCM. This parameter is valid only when the TCC solenoid is commanded OFF.
TCC Enable Short to Volts: Displays Yes or No. This parameter indicates whether a short to
voltage exists in the TCC solenoid valve feedback signal to the PCM. This
parameter is valid only when the TCC solenoid is commanded ON.
TCC Slip Speed: Displays a range of -4080 to 4079 RPM. This parameter
is the difference between transmission output speed and engine speed. A negative
value indicates that the engine speed is less than the output speed (deceleration).
A positive value indicates that the engine speed is greater than the output
speed (acceleration). A value of zero indicates that the engine speed is
equal to the output speed (TCC applied).
TFT (Transmission Fluid Temperature) Sensor: Displays a range of 0.00-5.00 V. When the transmission
fluid is cold, the sensor resistance is high and the PCM will sense high signal
voltage. As the transmission fluid temperature warms to a normal operating
temperature, the sensor resistance becomes less and the voltage decreases.
TFP Sw.: Displays Park/Neutral, Reverse, Drive4, Drive3, Drive2, Drive1
or Invalid. This parameter is the decoded status of the three A/B/C inputs
from the automatic transmission fluid pressure manual valve position switch.
Invalid is displayed when the PCM does not recognize a valid combination
of inputs.
TFP Sw. A/B/C: Displays HI/LOW, HI/LOW, HI/LOW. This parameter indicates the status
of the three inputs from the Automatic Transmission Fluid Pressure Manual
Valve Position Switch Assembly to the PCM. LOW represents a zero voltage
signal. HI represents an ignition voltage signal.
TP Desired Angle: Displays a range of 0-100%. This parameter indicates the
PCM's desired throttle angle for operating conditions present at that time.
TP Indicated Angle: Displays a range of 0-100%. This parameter indicates the
amount of throttle opening.
Trans. Fluid Temp.: Displays a range of -40°C to 151°C (-40°F
to 304°F). This parameter is the input signal of the transmission fluid
temperature sensor. Transmission fluid temperature is high (151°C)
(304°F) when signal voltage is low (0 V), and transmission fluid
temperature is low (-40°C) (-40°F) when signal voltage
is high (5 V).
Transmission Hot Mode: Displays On or Off. This parameter monitors transmission temperature.
On indicates that the transmission temperature has exceeded 135°C (275°F).
Transmission OSS (Output Speed Sensor): Displays a range of 0-8192 RPM. This parameter indicates
the rotational speed of the transmission output shaft expressed as revolutions
per minute.
Vehicle Speed: Displays a range of 0-255 km/h (0-158 mph).
This parameter is the input signal from the vehicle speed sensor assembly.
Scan Tool Data Definitions 5.7L
1-2 Shift Error: Displays a range of -6.38 to +6.38 seconds. This parameter
is the difference between the desired 1-2 shift time and the actual 1-2 shift
time. A positive number indicates a firm or fast shift (the actual shift
time was shorter than the desired shift time). A negative number indicates
a soft or slow shift (the actual shift time was longer than the desired
shift time). This value is only accurate if the shift was adaptable.
1-2 Shift Time: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last 1-2 shift. The shift time is based on the engine
RPM drop after the commanded 1-2 shift. This value is only accurate if the
shift was adaptable.
1-2 Sol.: Displays ON or OFF. This parameter is the commanded state of the
1-2 shift solenoid valve. ON represents a commanded energized state (current
is flowing through the solenoid). OFF represents a non-commanded state (current
is not flowing through the solenoid).
1-2 Sol. Open/Short to GND: Displays Yes or No. This parameter indicates if an open or short
to ground exists in the 1-2 shift solenoid valve feedback signal to the PCM.
This parameter is valid only when the 1-2 shift solenoid is commanded OFF.
1-2 Sol. Short to Volts: Displays Yes or No. This parameter indicates if a short to voltage
exists in the 1-2 shift solenoid valve feedback signal to the PCM. This parameter
is valid only when the 1-2 shift solenoid is commanded ON.
1-2 Tap Cell (4-16): Displays kPa or psi. This parameter displays the amount of pressure
varied from a calibrated base line pressure for shifts. Each TAP Cell is based
on a calibrated shift torque value. Each TAP Cell value is calculated from
the last shift time. This cell pressure is used in addition to the calibrated
base line pressure to adjust the apply of a clutch or band during the next
shift.
2-3 Shift Error: Displays a range of -6.38 to +6.38 seconds. This parameter
is the difference between the desired 2-3 shift time and the actual 2-3 shift
time. A positive number indicates a firm or fast shift (the actual shift
time was shorter than the desired shift time). A negative number indicates
a soft or slow shift (the actual shift time was longer than the desired
shift time). This value is only accurate if the shift was adaptable.
2-3 Shift Time: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last 2-3 shift. The shift time is based on the engine
RPM drop after the commanded 2-3 shift. This value is only accurate if the
shift was adaptable.
2-3 Sol.: Displays ON or OFF. This parameter is the commanded state of the
2-3 shift solenoid valve. ON represents a commanded energized state (current
is flowing through the solenoid). OFF represents a non-commanded state (current
is not flowing through the solenoid).
2-3 Sol. Open/Short to GND: Displays Yes or No. This parameter indicates if an open or short
to ground exists in the 2-3 shift solenoid valve feedback signal to the PCM.
This parameter is valid only when the 2-3 shift solenoid is commanded OFF.
2-3 Sol. Short to Volts: Displays Yes or No. This parameter indicates if a short to voltage
exists in the 2-3 shift solenoid valve feedback signal to the PCM. This parameter
is valid only when the 2-3 shift solenoid is commanded ON.
2-3 Tap Cell (4-16): See 1-2 Tap Cell (4-16)
3-2 Downshift Sol.: Displays On or Off. This parameter indicates if the 3-2 shift solenoid
valve assembly is currently commanded On or Off. The solenoid commanded state
is based on the transmission temperature. The solenoid will change states
during a 3-2 downshift to regulate the appropriate pressure. The commanded
state of the solenoid occurs at approximately 30 mph with a throttle
increase.
3-2 Downshift Sol. Open/Short to GND: Displays Yes or No. This parameter indicates if an open or short
to ground exists in the 3-2 shift solenoid valve assembly feedback signal
to the PCM. This parameter is valid only when the 3-2 shift solenoid is
commanded OFF.
3-2 Downshift Sol. Short to Volts: Displays Yes or No. This parameter indicates if a short to voltage
exists in the 3-2 shift solenoid valve assembly feedback signal to the PCM.
This parameter is valid only when the 3-2 shift solenoid is commanded ON.
3-4 Shift Error: Displays a range of -6.38 to +6.38 seconds. This parameter
is the difference between the desired 3-4 shift time and the actual 3-4 shift
time. A positive number indicates a firm or fast shift (the actual shift
time was shorter than the desired shift time). A negative number indicates
a soft or slow shift (the actual shift time was longer than the desired
shift time). This value is only accurate if the shift was adaptable.
3-4 Shift Time: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last 3-4 shift. The shift time is based on the engine
RPM drop after the commanded 3-4 shift. This value is only accurate if the
shift was adaptable.
A/C Clutch: Displays On or Off. This parameter indicates the commanded state
of the A/C control relay. The clutch should be engaged when On displays.
Adaptable Shift: Displays Yes or No. Yes indicates that the proper operating conditions
were all within the proper operating range during the last shift and that
the shift time was accurate. This shift information is then used through
the adaptive function in order to update the adapt cells. No indicates that
not all of the operating conditions were met in order to enable this function
and that the adapt cells were not updated.
Cruise: Displays Enabled or Disabled. This parameter indicates whether
the PCM is allowing cruise operation. The PCM has the ability to disable cruise
control under certain conditions.
Current Gear: Displays 1, 2, 3 or 4. This parameter indicates the current commanded
state of the shift solenoids.
Current TAP (Transmission Adaptive Pressure) Cell: Displays a TP cell range of 0-16. This parameter indicates
the current throttle position cell used for line pressure modification (adaptation).
Current TAP (Transmission Adaptive Pressure) Memory: Displays a range of -16 to +16 psi. This parameter
is the amount of pressure that is added to base line pressure to adjust the
holding effort of a clutch or band, while shifting.
ECT (Engine Coolant Temperature): Displays a range of -40°C to 151°C (-40°F
to 304°F). This parameter is the input signal of the engine coolant temperature
sensor. The engine coolant temperature is high (151°C) (304°F) when
the signal voltage is low (0 V), and the engine coolant temperature
is low (-40°C) (-40°F) when the signal voltage is high
(5 V).
Engine Run Time: Displays a range of 0:00:00-18:12:15 hr/min/sec. This
parameter measures how long the engine has been operating. When the ignition
switch is turned OFF, the value is reset to zero.
Engine Speed: Displays a range of 0-8192 RPM. This parameter indicates
the rotational speed of the engine expressed as revolutions per minute.
Engine Torque: Displays a range of 0-9999 lbs ft. This parameter
indicates the amount of torque that is delivered from the engine.
IAT (Intake Air Temperature): Displays a range of -40°C to 215°C (-40°F
to 419°F). The IAT sensor is a thermistor that is used to monitor the
temperature of the air entering the intake manifold. The PCM applies 5 volts
to the sensor on a 5 volt reference circuit. When the air is cool,
the resistance in the sensor will be high. If the air is warm, the sensor
resistance will be low and the PCM will sense a low voltage signal. The
PCM converts the signal of the IAT sensor to degrees Celsius. Intake air
temperature is used by the PCM to adjust fuel delivery and spark timing.
Ignition Voltage: Displays a range of 0.0-25.5 V. This represents the
system voltage measured by the PCM at it's ignition feed.
Latest Shift: Displays a range of 0.00-6.38 seconds. This parameter
is the actual time of the last upshift. This value is only accurate if the
shift was adaptable.
PC Sol. Actual Current: Displays a range of 0.00-1.10 amps. This parameter
is the actual current of the pressure control solenoid circuit at the control
module. Zero amp (no current flow) indicates actual higher line pressure.
Actual lower line pressure is indicated by 1.1 amps (high current
flow).
PC Sol. Duty Cycle: Displays a range of 0-100%. This parameter is the commanded
state of the pressure control solenoid expressed as a percent of energized
ON time. Zero percent indicates zero ON time (non-energized) or no current
flow. Approximately 60% at idle indicates maximum ON time (energized) or
high current flow.
PC Ref. (Reference) Current: Displays a range of 0.00-1.10 amps. This parameter
is the commanded current of the pressure control solenoid circuit. Zero amp
(no current flow) indicates commanded higher line pressure. Commanded lower
line pressure is indicated by 1.1 amps (high current flow).
Speed Ratio: Displays a range of 0.00:1-8.00:1. This parameter indicates
engine speed divided by transmission output speed. This value is used to estimate
transmission gear ratio.
TCC Brake Switch: Displays Open or Closed. This parameter indicates the state of
the brake switch circuit input. Open indicates a zero voltage input (brake
switch open, brake pedal applied). Closed indicates a B+ voltage input (brake
switch closed, brake pedal released).
TCC Duty Cycle: Displays a range of 0-100%. This parameter is the commanded
percentage of ON time of the TCC PWM solenoid. Approximately 90 percent
represents an ON (energized) commanded state. Zero percent represents
an OFF (non-energized) commanded state. This commanded state is applied
at a vehicle speed between approximately 0-16 km/h (0-10 mph).
TCC Duty Cycle Open/Short to GND: Displays Yes or No. This parameter indicates whether an open or
a short to ground exists in the TCC PWM solenoid valve feedback signal
to the PCM. This parameter is valid only when the TCC PWM solenoid
is commanded OFF (duty cycle is 0%).
TCC Duty Cycle Short to Volts: Displays Yes or No. This parameter indicates whether a short to
voltage exists in the TCC PWM solenoid valve feedback signal to the
PCM. This parameter is valid only when the TCC PWM solenoid is commanded
ON (duty cycle is at maximum).
TCC Enable: Displays Yes or No. This parameter is the commanded state of the
TCC solenoid. Yes indicates a commanded energized state (current is flowing
through the solenoid). No indicates a commanded non-energized state (current
is not flowing through the solenoid). This commanded state occurs at various
vehicle speeds between applications.
TCC Enable Open/Short to GND: Displays Yes or No. This parameter indicates whether an open or
a short to ground exists in the TCC solenoid valve feedback signal to the
PCM. This parameter is valid only when the TCC solenoid is commanded OFF.
TCC Enable Short to Volts: Displays Yes or No. This parameter indicates whether a short to
voltage exists in the TCC solenoid valve feedback signal to the PCM. This
parameter is valid only when the TCC solenoid is commanded ON.
TCC Mode: Displays a range of 0 through 5. Zero (0) or Off Mode indicates
that the PCM commands the TCC OFF at a calibrated minimum throttle. The calibrated
minimum throttle is different at low vehicle speeds than it is at high vehicle
speeds. Off Mode is also active when the transmission is in the wrong gear
range, the engine or the transmission is cold, the brake input indicates
that the brakes are ON, a downshift or upshift is initiated, the engine
is at idle, the transmission is in Hot Mode or a misfire is detected. One
(1) or Release Mode indicates that the PCM commands the release of the TCC.
Two (2) or Apply Mode indicates that the PCM commands the apply of the TCC.
Apply pressure varies based on normal or performance operations, hot conditions
or if the cruise control is active. Apply Mode is used under normal driving
conditions. All apply pressure is dependent on throttle position and vehicle
speed. Three (3) or Apply Enable Mode indicates that enabling conditions
are met for applying the TCC (enabling conditions include vehicle speed,
gear selection, transmission temperature, throttle angle, brake switch status,
etc.). Four (4) or Locked Mode indicates that the PCM commands full capacity
of the TCC when the transmission is in fourth gear and the vehicle speed
is greater than a calibrated value. When variable TCC apply pressure stops
(Apply Mode), maximum TCC pressure is used. Five (5) or Coast Mode indicates
that the PCM commands apply of the TCC when the transmission is in fourth
gear and the throttle and vehicle speed are not high enough to enable Apply
Mode, but high enough to keep the TCC applied. When Coast Mode is active,
TCC apply pressure is set to a predetermined amount.
TCC (Torque Converter Clutch) Slip Speed: Displays a range of -4080 to 4079 RPM. This parameter
is the difference between transmission output speed and engine speed. A negative
value indicates that the engine speed is less than the output speed (deceleration).
A positive value indicates that the engine speed is greater than the output
speed (acceleration). A value of zero indicates that the engine speed is
equal to the output speed (TCC applied).
TFT (Transmission Fluid Temperature) Sensor: Displays a range of 0.00-5.00 V. When the transmission
fluid is cold, the sensor resistance is high and the PCM will sense high signal
voltage. As the transmission fluid temperature warms to a normal operating
temperature, the sensor resistance becomes less and the voltage decreases.
TFP Sw.: Displays Park/Neutral, Reverse, Drive4, Drive3, Drive2, Drive1
or Invalid. This parameter is the decoded status of the three A/B/C inputs
from the automatic transmission fluid pressure manual valve position switch.
Invalid is displayed when the PCM does not recognize a valid combination
of inputs.
TFP Sw. A/B/C: Displays HI/LOW, HI/LOW, HI/LOW. This parameter indicates the status
of the three inputs from the Automatic Transmission Fluid Pressure Manual
Valve Position Switch Assembly to the PCM. LOW represents a zero voltage
signal. HI represents an ignition voltage signal.
TP (Throttle Position) Angle: Displays a range of 0-100%. The TP angle is computed by the
PCM from the TP Sensor voltage. The TP angle should read 0% at idle and 100%
at Wide Open Throttle (WOT).
TP (Throttle Position) Sensor: Displays a range of 0.00-5.00 volts. The TP Sensor
is used by the PCM to determine the amount of throttle demanded by the driver.
Voltage is below 1 volt at idle and above 4 volts at Wide
Open Throttle (WOT).
Trans. Fluid Temp.: Displays a range of -40°C to 151°C (-40°F
to 304°F). This parameter is the input signal of the transmission fluid
temperature sensor. Transmission fluid temperature is high (151°C) (304°F)
when signal voltage is low (0 V), and transmission fluid temperature
is low (-40°C) (-40°F) when signal voltage is high (5 V).
Transmission Hot Mode: Displays On or Off. This parameter monitors transmission temperature.
On indicates that the transmission temperature has exceeded 135°C (275°F).
Transmission OSS (Output Speed Sensor): Displays a range of 0-8192 RPM. This parameter indicates
the rotational speed of the transmission output shaft expressed as revolutions
per minute.
Vehicle Speed: Displays a range of 0-255 km/h (0-158 mph).
This parameter is the input signal from the vehicle speed sensor assembly.