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 Centre |
| ATF |
Automatic Transmission Fluid |
| ATT |
Attachment |
| ATTS |
Active Torque Transfer System |
| AUTO |
Automatic |
| AUX |
Auxiliary |
| |
|
| BARO |
Barometric |
| BAT |
Battery |
| BDC |
Bottom Dead Centre |
| BTDC |
Before Top Dead Centre |
| |
|
| CARB |
Carburettor |
| CAT |
Catalytic Converter |
| or CATA |
|
| 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 Assist
|
| 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) |
|
