Operation CHARM: Car repair manuals for everyone.

Glossary of Terms

ABS antilock brake system
ACM airbag control module
AECM airbag electronic control module (ACM)
APM adjustable pedals module
ASDM airbag system diagnostic module (ACM)
AZC automatic zone control
BCM body control module
CAB controller antilock brake
DAB driver airbag
DDM driver door module
DLC data link connector
DTC diagnostic trouble code
EBL electric back lite (rear window defogger)
ECM engine control module
EVIC electronic vehicle information center
HSM heated seat module (also called seat module)
HVAC heater ventilation, air conditioning
I/R infrared sensor
ITM intrusion transceiver module
MHSM memory heated seat module (also called seat module)
MIC mechanical instrument cluster
MSM memory seat module
MUX Multiplexed
NAV navigation
ODO odometer
ORC occupant restraint controller (ACM)
PAB passenger airbag
PCI Programmable Communication Interface (vehicle communication bus)
PCM powertrain control module
PDC power distribution center
PDM passenger door module
PWM pulse width modulated
RKE remote keyless entry
SBS Seatbelt switch
SBT seatbelt tensioner
SKIM sentry key immobilizer module
SKIS sentry key immobilizer system
SQUIB also called initiator (located in rear of airbag module)
TCM transmission control module
TPM tire pressure monitoring
VFD vacuum fluorescent display
VTSS vehicle theft security system