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.
Acronyms And Definitions
AAT: Ambient Air Temperature
ABS: Anti-lock Brake System
A/C: Air Conditioning
APP: Accelerator Pedal Position
A/T: Automatic Transmission
BARO: Barometric Pressure
BPP: Brake Pedal Position
CAC: Charge Air Cooler
CACT: Charge Air Cooler Temperature
CAN: Controller Area Network
CARB: California Air Resources Board
CCM: Comprehensive Component Monitor
CKP: Crankshaft Position
CMP: Camshaft Position
DEF: Diesel Exhaust Fluid
DFSO: Deceleration Fuel Shut Off
DLC: Data Link Connector
DMM: Digital Multimeter
DPF: Diesel Particulate Filter
DTC: Diagnostic Trouble Code
ECT: Engine Coolant Temperature
EEC: Electronic Engine Control
EEPROM: Electronically Erasable Programmable Read Only Memory
EGR: Exhaust Gas Recirculation
EGRT: Exhaust Gas Recirculation Temperature
EGT: Exhaust Gas Temperature
EMD: Engine Manufacturer Diagnostics
EMI: Electromagnetic Interference
EOT: Engine Oil Temperature
EP: Exhaust Pressure
FLI: Fuel Level Input
FMEM: Failure Mode Effects Management
FP: Fuel Pump
FRP: Fuel Rail Pressure
FRT: Fuel Rail Temperature
FSS: Fan Speed Sensor
GPCM: Glow Plug Control Module
GVWR: Gross Vehicle Weight Rating
IAT: Intake Air Temperature
IDS: Integrated Diagnostic System
IFS: Inertia Fuel Shutoff
IM: Inspection Maintenance
ISO: International Standards Organization
KAM: Keep Alive Memory
KAPWR: Keep Alive Power
km/h: Kilometers per hour
KOEO: Key On Engine Off
KOER: Key On Engine Running
kPa: Kilopascal
L: Liter
lb-ft: Pounds of force per foot
MAF: Mass Airflow
MAP: Manifold Absolute Pressure
MIL: Malfunction Indicator Lamp
MPH: Miles Per Hour
NOx: Nitrogen Oxides
OASIS: On-line Automotive Service Information System
OBD: On Board Diagnostics
OC: Oxidation Catalytic Converter
OD: Overdrive
OSC: Output State Control
OSR: On Board System Readiness
PATS: Passive Anti-Theft System
PCM: Powertrain Control Module
PID: Parameter Identification
PTO: Power Take Off
PTS: Professional Technician Society
PWM: Pulse Width Modulation
RAM: Random Access Memory
RFI: Radio Frequency Interference
ROM: Read Only Memory
RPM: Revolutions Per Minute
RTD: Resistance Temperature Detector
SAE: Society of Automotive Engineers
SCR: Selective Catalytic Reduction
TC: Turbocharger
TCM: Transmission Control Module
TSB: Technical Service Bulletin
VCM: Vehicle Communication Module
VECI: Vehicle Emission Control Information
VID: Vehicle Identification
VIN: Vehicle Identification Number
VSS: Vehicle Speed Sensor
WIF: Water In Fuel
NO RELATED
Use the Manual With the Right Hardware
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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.