Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Commonly Used Abbreviations - General Information: "A"
- A
-
Amperes
- ABS
-
Anti-Lock Brakes
- ABRS
-
Air Bag Restraint System
- AC
-
Alternating Current
- A/C
-
Air Conditioning
- ACCS
-
A/C Cycling Switch
- ACCUM
-
Accumulator
- ACCY
-
Accessory
- ACT
-
Air Charge Temperature Sensor
- ADJ
-
Adjust or Adjustable
- ADV
-
Advance
- AFS
-
Airflow Sensor
- AI
-
Air Injection
- AIR or A.I.R.
-
Air Injection Reactor
- AIS
-
Air Injection System
- Alt.
-
Alternator or Altitude
- Amp./amp/amps
-
Ampere
- ASCS
-
Air Suction Control Solenoid
- ASD
-
Auto Shutdown
- ASDM
-
Air Bag System Diagnostic Module
- ASV
-
Air Suction Valve
- A/T
-
Automatic Transmission/Transaxle
- ATC
-
Automatic Temperature Control
- ATDC
-
After Top Dead Center
- ATF
-
Automatic Transmission Fluid
- ATS
-
Air Temperature Sensor
- Aux.
-
Auxiliary
- Avg.
-
Average
- AXOD
-
Automatic Transaxle Overdrive (Ford Models Only)
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.