Abbreviations Used In Testing Procedures

A
A/C Air Conditioning
AP Accelerator Pedal
ACL Air Cleaner

C
CAC Charge Air Cooler
CFI Continuous Fuel Injection
CKP Crankshaft Position
CMP Camshaft Position
CTP Closed Throttle Position

D
DI Distributor Ignition
DLC Data Link Connector
DTC Diagnostic Trouble Code
DTM Diagnostic Test Mode
DSA Dynamic Stability Assistance

E
ECM Engine Control Module
ECT Engine Coolant Temperature
EGR Exhaust Gas Recirculation
EI Electronic Ignition
EVAP Evaporative Emission

F
FC Fan Control
FP Fuel Pump

G
GEN Generator

H
HO2S Heated Oxygen Sensor

I
IAC Idle Air Control
IAT Intake Air Temperature
ICM Ignition Control Module

K
KS Knock Sensor

M
MAP Mass Air Flow
MAP Manifold Absolute Pressure
MFI Multiport Fuel Injection
MIL Malfunction Indicator Lamp

N
NTC Negative Temperature Co-efficient

O
O2S Oxygen Sensor (unheated)
OBD On-board Diagnostic

P
PAIR Pulsed Secondary Air Injection
PNP Park/neutral Position
PTC Positive Temperature Co-efficient

R
RPM Engine Speed

S
SRI Service Reminder Indicator
SRS Supplemental Restraint System (airbag)
ST Scan Tool

T
TB Throttle Body
TC Turbocharger
TCM Transmission Control Module
TDC Top Dead Centre
TP Throttle Position
TWO Three-way Catalytic Converter

V
VSS Vehicle Speed Sensor

W
WOT Wide Open Throttle