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Global Parameter list
All parameter identification data (PID) listed was verified on actual vehicles to guaran-
tee accuracy. Definitions used to describe all PIDs were obtained from reliable
sources and are accurate at time of printing. It is possible that some newer vehicles
may contain data different from that listed in Appendix A. Always refer to vehicle service
manual for manufacturer specific PIDs.
Data Parameter List Format
The PID list is organized in alphabetical order the same way the scan tool does.
For each PID, the type of reading are provided. Remember to always refer to a vehicle
service manual for detailed diagnostic procedures for troubleshooting incorrect PID
readings.
Types of Data Parameters
INPUT: These data parameters are obtained from sensor circuit outputs.
Sensor circuit outputs are
inputs to vehicles PCM. For example, if
Oxygen Sensor circuit was generating a 400mV signal, then scan
tool would read O2S (v) 0.40.
OUTPUT: These data parameters are
outputs or commands that come directly
from computer module(s). For example; the ignition spark advance
is controlled by PCM, on most vehicles, monitoring this PID shows
spark output from PCM. The scan tool would display IGN ADV(°) 10.
CALCULATED: These data parameters are calculated after analyzing various inputs
to the vehicles computer module(s). For example, the engine load.
The PCM calculates this from sensor inputs and displays it in a
percentage.
PCM VALUE: Is information that is stored in the computer module(s)s memory and
determined to be useful to service technician. An example of this is
TROUBLE CODE value, the DTC that caused a freeze frame capture.
NOTE: Several different causes can have the same parameter indication. For
information on diagnostics consult vehicle service manuals.
DATA PARAMETER LIST
ABS FRP (0 - 655350kPA) or (0 - 95050.5PSI)
Absolute Fuel Rail Pressure is the fuel pressure at the engine when reading in reference to
atmosphere pressure.
ABS LOAD (0 - 100%)
Absolute Load Value is the normal value of air mass per intake stroke displayed as a percent.
ABS LOAD (0 - 100%)
Absolute Load Value is the normal value of air mass per intake stroke displayed as a percent.
ABSLT TPS (0 - 100%)
Absolute Throttle Position represents normal distance throttle is opened.
ACC POS D,E or F (0 - 100%)
Accelerator Pedal Position represents normal distance gas pedal is pressed.
BARO PRESS (0 - 255kPA) or (0 - 36.9PSI)
Barometric Pressure is normally received from a dedicated barometer, manifold absolute pressure
sensor and other inputs during certain modes of driving.
NOTE: The Baro Press may not be the same as some weather services
Barometric Pressure due to being read at sea level.