System Terminology and Definitions

ABS Anti-Lock Brake System
A/C Air Conditioning
A/D Analog to Digital
ALDL Assembly Line Data Link
ATS Air Temperature Sensor
BARO Barometric Pressure
BCM Body Computer Module
BLM Block Learn Multiplier
C3I Computer Command Control Ignition
CKT Circuit
CL Closed Loop
CPS Central Power Supply
C/V Chime/Voice Module

Data
Line Circuit 800, the on-board computer
communication network.

Data
Signal A signal sent to or from a computer on a
common wire with many other messages.
A data line is like a telephone line that
carries many messages all on one line.

Diag-
nostics The self-diagnostic portion of the
on-board computer system that is accessed
by pressing "Off" and "Warmer".

DIC Driver Information Center

Discrete
Signal An individual voltage or ground signal
this is carried on its own wire.

DVM Digital Volt Meter
EBCM Electronic Brake Control Module

ECC Electronic Comfort Control Panel or
Electronic Heater and A/C Control

ECI Extended Compressor at Idle
ECM Engine Control Module

EEPROM Electronically Erasable Programmable
Read Only Memory

EGR Exhaust Gas Recirculation
ESC Electronic Spark Control
EST Electronic Spark Timing
EVRV Electronic Vacuum Regulator Valve
HTR Heater
HVAC Heating and Air Conditioning
IAC Idle Air Control
IPC Instrument Panel Cluster
ISC Idle Speed Control

ISO
Power or
Ground A solid state circuit that is separated from
non-solid stated circuits to reduce electrical
interference.

Isolated
Power
Ground Power or Ground to a solid state circuit
that is separated from non-solid state
circuits to reduce electrical interference.

LCD Liquid Crystal Display
LED Light Emitting Diode
LHG Left Hand Grommet, drivers side of cowl.
LSP Left Switch Pod
MAF Mass Air Flow
MAP Manifold Absolute Pressure
MAT Manifold Air Temperature

Mem-Cal Memory and Calibration unit used in the
ECM in place of a PROM.

MS Milliseconds
MV Millivolts
O2 Oxygen
OAT Outside Air Temperature
OL Open Loop
POT Potentiometer (Variable Resistor)

PRNDL Transmission mounted neutral start
switch or gear selector illumination on
IPC.


PROM Programmable Read Only Memory

PWM Pulse width modulated
RAP Retained Accessory Power
RHG Right Hand Grommet, passengers side of cowl.
RPM Revolutions Per Minute
RSP Right Switch Pod or Assembly
SDD Speed Dependent Damping
Sol Solenoid
TCC Transaxle Converter Clutch
TPS Throttle Position Sensor
VF Vacuum Fluorescent
VSS Vehicle Speed Sensor

Wakeup An input signal that turns on a computer
device.