Actron Super AutoScanner CP9145, User Manual

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• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • B – 5
• • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • Glossary
B
PNP:
Park/Neutral Position. This is a switch
that tells the PCM when the gear shift
lever is in the Park or Neutral position.
When in Park or Neutral, the PCM will
operate the engine in an “idle” mode.
PROM:
Programmable Read-Only Memory. The
PROM contains programming information
the PCM needs to operate a specific
vehicle model/engine combination.
PSPS:
Power Steering Pressure Switch
Purge Solenoid:
Controls the flow of fuel vapors from the
carbon canister to the intake manifold.
The canister collects vapors evaporating
from the fuel tank, preventing them from
escaping to the atmosphere and causing
pollution. During warm engine cruise
conditions, the PCM energizes the Purge
Solenoid so the trapped vapors are drawn
into the engine and burned.
PWM:
Pulse Width Modulated
PZM:
Platform Zone Module
QDM:
Quad Driver Module
RAM:
Random Access Memory
Relay:
An electromechanical device in which
connections in one circuit are switched
Reluctance Sensor:
A type of sensor typically used to
measure crankshaft or camshaft Speed
and/or position, driveshaft speed, and
wheel speed
ROM:
Read-Only Memory. Permanent
programming information stored inside
the PCM, containing the information the
PCM needs to operate a specific vehicle
model/engine combination.
RPM:
Revolutions Per Minute
SAE:
Society of Automotive Engineers.
Scan Tool:
A device that interfaces with and
communicates information on a data link.
SDM:
Sensing and Diagnostic Module
Sensor 1:
A standard term used to identify the
location of oxygen sensors. Sensor 1 is
located upstream of the catalytic
converter. See O2S, Bank 1, Bank 2.
Sensor 2:
A standard term used to identify the
location of oxygen sensors. Sensor 2 is
located downstream of the catalytic
converter. See O2S, Bank 1, Bank 2.
Sensor:
Any device that reports information to the
PCM. The job of the sensor is to convert
a parameter such as engine temperature
into an electrical signal that the PCM can
understand.
SFI or SEFI:
Sequential Fuel Injection or Sequential
Electronic Fuel Injection. A fuel injection
system that uses one or more injectors
for each cylinder. The injectors are
mounted in the intake manifold and are
fired individually.
Solenoid:
A device consisting of an electrical coil
which when energized, produces a
magnetic field in a plunger, which is
pulled to a central position. A solenoid
may be used as an actuator in a valve or
switch.
ST:
Short Term fuel trim.
STS:
Service Throttle Soon
TAC:
Throttle Actuator Control
TBI:
Throttle Body Injection. A fuel injection
system having one or more injectors
mounted in a centrally located throttle
body, as opposed to positioning the
injectors close to an intake valve port. TBI
is also called Central Fuel Injection (CFI)
in some vehicles.
TCC:
Torque Converter Clutch