Glossary of Acronyms
4WD 4-Wheel DriveABS Antilock Brake System
ACM Airbag Control Module
AECM Airbag Electronic Control Module
AIRBAG MODULE Also called "squib" initiator. Located inside the driver side airbag module assembly.
ASCM Airbag System Control Module
ASDM Airbag System Diagnostic System
backfire, popback Fuel ignites in either the intake or the exhaust system.
CAB Controller Antilock Brake
CCD Chrysler Collision Detection (vehicle communication bus)
CKP Crankshaft Position Sensor
CMP Camshaft Position Sensor
cuts out, misses A steady pulsation or the inability of the engine to maintain a consistent rpm.
DAB Driver Airbag
DLC Data Link Connector (previously called "engine diagnostic connector")
detonation, spark knock A mild to severe ping, especially under loaded engine conditions.
DTC Diagnostic Trouble Code
ECT Engine Coolant Temperature Sensor
EGR Exhaust Gas Recirculation Valve and System
EMCC Electronic Modulated Convertor Clutch
EMIC Electro/Mechanical Instrument Cluster
generator Previously called "Alternator"
hard start The engine takes longer than usual to start, even though it is able to crank normally.
hesitation, sag, stumble There is a momentary lack of response when the throttle is opened. This can occur at all vehicle speeds. If it is severe enough, the engine may stall.
IAC Idle Air Control Valve
IAT Intake Air Temperature Sensor
JTEC Jeep/Truck Engine Controller
lack of power, sluggish The engine has less than expected power,with little or no increase in vehicle speed when the throttle is opened.
LDP Leak Detection Pump
LED Light Emitting Diode
LFW Low Fuel Warning
MAP Manifold Absolute Pressure Sensor
MIC Mechanical Instrument Cluster
MIL Malfunction Indicator Lamp
MTV Manifold Tuning Valve
O2S Oxygen Sensor
PAB Passenger Airbag
PCI Programmable Communication Interface
PCM Powertrain Control Module
[1][2]PCV Positive Crankcase Ventilation
PDC Power Distribution Center
PEP Peripheral Expansion Port
poor fuel economy There is significantly less fuel mileage than other vehicles of the same design and configuration.
rough/unstable/erratic idle, stalling The engine runs unevenly at idle and causes the engine to shake if it is severe enough. The engine idle rpm may vary (called "hunting"). This condition may cause stalling if it is severe enough.
SKIM Sentry Key Immobilizer Module
SKIS Sentry Key Immobilizer System
SRS Supplemental Restraint System
S.T.A.R. Service Technical Assistance Resource Center
start & stall The engine starts but immediately dies.
surge engine rpm fluctuation without corresponding change in Throttle Position Sensor
TPS Throttle Position Sensor
TRS Transmission Range Sensor
VFD Vacuum Fluorescent Display
VSS Vehicle Speed Sensor/Signal