Powertrain Diagnostic Procedures: Acronyms: Notes
A/C Air Conditioning
ABS Anti-lock Brake System
ASD Relay Auto Shutdown Relay
APPS Accelerator Pedal Position Sensor
Baro Barometric Pressure
BCM Body Control Module
BTS Battery Temperature Sensor
CAA Clean Air Act
CAB Controller Antilock Brakes
CARB California Air Resources Board
CCD BUS Chrysler Collision Detection Bus
CKP Sensor Crankshaft Position Sensor
CKT Circuit
CMP Sensor Camshaft Position Sensor
CM840 Cummins Engine controller
CO Carbon Monoxide
CVI Clutch Volume Index
DCP Solenoid Duty-Cycle Purge Solenoid
DLC Data Link Connector
DRBIII® Diagnostic Readout Box - 3rd Generation
DTC Diagnostic Trouble Code
DVOM Digital Volt Ohm Meter
EATX Electronic Automatic Transmission Controller
EC European Community
ECT Sensor Engine Coolant Temperature Sensor
EEPROM Electrically Erasable Programmable Read Only Memory
EGR Valve Exhaust Gas Recirculation Valve
EMCC Electronically Modulated Converter Clutch
EMI Electro-Magnetic Interference
EOBD European OBD (based upon Euro Stage III)
EPA Environmental Protection Agency
EPP Engine Position Pulse
ETC Electronic Throttle Control
EU European Union
EVAP Evaporative Emission System
EVR Electronic Voltage Regulator
EWMA Exponentially Weighted Moving Average
FEMCC Fully Electronically Modulated Converter Clutch
FTP Federal Test Procedure
FSS Fan Speed signal
HC Hydrocarbons
HO2S Heated Oxygen Sensor
Generator Previously called "alternator"
IAC Motor Idle Air Control Motor
IAT Sensor Intake Air Temperature Sensor
IOD Ignition off draw
IRT Intelligent Recovery Timer
ISS Input Speed Sensor
I/M Inspection and Maintenance Testing
JTEC Jeep/Truck Engine Controller
LDP Leak Detection Pump
LED Light Emitting Diode
LPS Line Pressure Sensor
LR Low/reverse Clutch
LSIACV Linear Solenoid Idle Air Control Valve
MAF Mass Air flow
MAP Sensor Manifold Absolute Pressure Sensor
MDS 2 ® Mopar Diagnostic System 2nd Generation
MIL Malfunction Indicator Lamp
MS Multi Select
MTV Manifold Tuning Valve
NGC Next Generation Controller
NTC Negative Temperature Coefficient
NVLD Natural Vacuum Leak Detection
O 2 Sensor Oxygen Sensor
O2S Oxygen Sensor
OBD I On Board Diagnostics 1st Generation
OBD II On-Board Diagnostics 2nd Generation
OD Overdrive Clutch
ORVR On-Board Refueling Vapor Recovery
OSS Output Speed Sensor
PCI BUS Programmable Communications Interface BUS (J1850)
PCM Powertrain Control Module
PCS Pressure Control Solenoid
PCV Positive Crankcase Ventilation
PDC Power Distribution Center
PEMCC Partial Electronically Modulated Converter Clutch
PEP Peripheral Expansion Port
P/N Park/Neutral
PPS Proportional Purge Solenoid
PS Power Steering
PSP Power Steering Pressure (Switch)
PTC Positive Temperature Coefficient
PWM Pulse-Width Modulation
RAM Random Access Memory
REV Reverse Clutch
RFI Radio Frequency Interference
RKE Remote Keyless Entry
RPM Revolutions Per Minute
SAE Society of Automotive Engineers
SBEC Single Board Engine Controller
SCW Similar Conditions Window
SKIM Sentry Key Immobilizer Module
SRV Short Runner Valve
SSV Solenoid Switch Valve
SW Switch
TCC Torque Converter Clutch
TCCM Transfer Case Control Module
TDC Top Dead Center
TP Throttle Position Sensor
TRD Torque Reduction
TRS Transmission Range Sensor
TTS Transmission Temperature Sensor
UD Underdrive Clutch
VSS Vehicle Speed Signal
WOT Wide Open Throttle
2/4 2nd and 4th gear Clutch or Pressure Switch
2C 2nd Clutch
4C 4th Clutch