Abbreviations01-16
List of automotive abbreviations which may be used in shop manual.
| ABS
|
Anti-lock Brake System
|
| A/C
|
Air Conditioning, Air Conditioner
|
| ACL
|
Air Cleaner
|
| A/F
|
Air Fuel Ratio
|
| ALR
|
Automatic Locking Retractor
|
| ALT
|
Alternator
|
| AMP
|
Ampere(s)
|
| ANT
|
Antenna
|
| API
|
American Petroleum Institute
|
| APPROX.
|
Approximately
|
| ASSY
|
Assembly
|
| A/T
|
Automatic Transmission
|
| ATDC
|
After Top Dead Center
|
| ATF
|
Automatic Transmission Fluid
|
| ATT
|
Attachment
|
| ATTS
|
Active Torque Transfer System
|
| AUTO
|
Automatic
|
| AUX
|
Auxiliary
|
|
|
|
| BARO
|
Barometric
|
| BAT
|
Battery
|
| BDC
|
Bottom Dead Center
|
| BTDC
|
Before Top Dead Center
|
|
|
|
| CARB
|
Carburetor
|
CAT
or CATA
|
Catalytic Converter
|
| CHG
|
Charge
|
| CKF
|
Crankshaft Speed Fluctuation
|
| CKP
|
Crankshaft Position
|
| CO
|
Carbon Monoxide
|
| COMP
|
Complete
|
| CPB
|
Clutch Pressure Back up
|
| CPC
|
Clutch Pressure Control
|
| CPU
|
Central Processing Unit
|
| CVT
|
Continuously Variable Transmission
|
| CYL
|
Cylinder
|
| CYP
|
Cylinder Position
|
|
|
|
| DI
|
Distributor Ignition
|
| DIFF
|
Differential
|
| DLC
|
Data Link Connector
|
| DOHC
|
Double Overhead Camshaft
|
| DPI
|
Dual Point Injection
|
| DTC
|
Diagnostic Trouble Code
|
|
|
|
| EBD
|
Electronic Brake Distribution
|
| ECM
|
Engine Control Module
|
| ECT
|
Engine Coolant Temperature
|
| EGR
|
Exhaust Gas Recirculation
|
| ELD
|
Electrical Load Detector
|
| EPR
|
Evaporator Pressure Regulator
|
| EPS
|
Electrical Power Steering
|
| EVAP
|
Evaporative
|
| EX
|
Exhaust
|
|
|
|
| F
|
Front
|
| FIA
|
Fuel Injection Air
|
| FL
|
Front Left
|
| FP
|
Fuel Pump
|
| FR
|
Front Right
|
| FSR.
|
Fail Safe Relay
|
| FWD
|
Front Wheel Drive
|
|
|
|
| GAL
|
Gallon
|
| GND
|
Ground
|
| GPS
|
Global Positioning System
|
|
|
|
| H/B
|
Hatchback
|
| HC
|
Hydrocarbons
|
| HID
|
High Intensity Discharge
|
| HO2S
|
Heated Oxygen Sensor
|
|
|
|
| IAB
|
Intake Air Bypass
|
| IAC
|
Idle Air Control
|
| IACV
|
Idle Air Control Valve
|
| IAR
|
Intake Air Resonator
|
| IAT
|
Intake Air Temperature
|
| ICM
|
Ignition Control Module
|
| ID
|
Identification
|
| ID or I.D.
|
Inside Diameter
|
| IG or IGN
|
Ignition
|
| IMA
|
Idle Mixture Adjustment
Integrated Motor Assisted
|
| IMMOBI.
|
Immobilizer (Immobiliser)
|
| IN
|
Intake
|
| INJ
|
Injection
|
| INT
|
Intermittent
|
|
|
|
| KS
|
Knock Sensor
|
|
|
|
| L
|
Left
|
| L/C
|
Lock-up Clutch
|
| LCD
|
Liquid Crystal Display
|
| LED
|
Light Emitting Diode
|
| LEV
|
Low Emission Vehicle
|
| LF
|
Left Front
|
| LH
|
Left Handle
|
| LHD
|
Left Handle Drive
|
| LR
|
Left Rear
|
| LSD
|
Limited Slip Differential
|
| L-4
|
In-line Four Cylinder (engine)
|
| MAP
|
Manifold Absolute Pressure
|
| MAX.
|
Maximum
|
| MBS
|
Mainshaft Brake System
|
| MCK
|
Motor Check
|
| MCU
|
Moment Control Unit
|
| MIL
|
Malfunction Indicator Lamp
|
| MIN.
|
Minimum
|
| MPI
|
Multi Point Injection
|
| M/S
|
Manual Steering
|
| M/T
|
Manual Transmission
|
|
|
|
| N
|
Neutral
|
| NOx
|
Oxides of Nitrogen
|
|
|
|
| OBD
|
On-board Diagnostic
|
| O2S
|
Oxygen Sensor
|
| OD or O.D.
|
Outside Diameter
|
|
|
|
| P
|
Park
|
| PAIR
|
Pulsed Secondary Air Injection
|
| PCM
|
Powertrain Control Module
|
| PCV
|
Positive Crankcase Ventilation Proportioning
Control Valve
|
| PDU
|
Power Drive Unit
|
| PGM-FI
|
Programmed-fuel Injection
|
| PGM-IG
|
Programmed Ignition
|
| PH
|
Pressure High
|
| PL
|
Pilot Light or Pressure Low
|
| PMR
|
Pump Motor Relay
|
| P/N
|
Part Number
|
| PRI
|
Primary
|
| P/S
|
Power Steering
|
| PSF
|
Power Steering Fluid
|
| PSP
|
Power Steering Pressure
|
| PSW
|
Pressure Switch
|
|
|
|
| Qty
|
Quantity
|
|
|
|
| R
|
Right
|
| REF
|
Reference
|
| RGB
|
Red, Green, Black
|
| RH
|
Right Handle
|
| RHD
|
Right Handle Drive
|
| RL
|
Rear Left
|
| RON
|
Research Octane Number
|
| RR
|
Rear Right
|
|
|
|
| SAE
|
Society of Automotive Engineers
|
| SCS
|
Service Check Signal
|
| SEC
|
Second
Secondary
|
| SOHC
|
Single Overhead Camshaft
|
| SOL
|
Solenoid
|
| SPEC
|
Specification
|
| S/R
|
Sun Roof
|
| SRS
|
Supplemental Restraint System
|
| STD
|
Standard
|
| SW
|
Switch
|
|
|
|
| T
|
Torque
|
| TB
|
Throttle Body
|
| T/B
|
Timing Belt
|
| TC
|
Torque Converter
|
| TCM
|
Transmission Control Module
|
| TCS
|
Traction Control System
|
| TDC
|
Top Dead Center
|
| TFT
|
Thin Film Transistor
|
| T/N
|
Tool Number
|
| TP
|
Throttle Position
|
| TWC
|
Three Way Catalytic Converter
|
|
|
|
| VC
|
Viscous Coupling
|
| VIN
|
Vehicle Identification Number
|
| VSS
|
Vehicle Speed Sensor
|
| VTEC
|
Variable Valve Timing & Valve Lift Electronic
Control
|
| VVIS
|
Variable Volume Intake System
|
|
|
|
| W
|
With
|
| W/O
|
Without
|
| WOT
|
Wide Open Throttle
|
|
|
|
| 2WD
|
Two Wheel Drive
|
| 4WD
|
Four Wheel Drive
|
| 2WS
|
Two Wheel Steering
|
| 4AT
|
4-speed Automatic Transmission
|
| 5MT
|
5-speed Manual Transmission
|
| 6MT
|
6-speed Manual Transmission
|
| [P]
|
Park
|
| [R]
|
Reverse
|
| [N]
|
Neutral
|
| [D4]
|
Drive (1st through 4th gear)
|
| [D3]
|
Drive (1st through 3rd gear)
|
| [2]
|
Second
|
| [1]
|
First
|
| [D]
|
Drive
|
| [S]
|
Second
|
| [L]
|
Low
|
| O/D
|
Over Drive
|
| 1ST
|
Low (gear)
|
| 2ND
|
Second (gear)
|
| 3RD
|
Third (gear)
|
| 4TH
|
Fourth (gear)
|
| 5TH
|
Fifth (gear)
|
| 6TH
|
Sixth (gear)
|
