1E-4 Electronic control fuel injection system (Common rail type) Table of abbreviation Abbreviation Name Meaning and remarks A/D Analog/Digital Analog/Digital AP Accelerator Position Accelerator opening angle CAN Controller Area Network Communication system used to communicate between ECM and the machine control unit CKP Crankshaft Position Crankshaft (the sensor is installed onto flywheel housing) position C/U Control/Unit Abbreviation of control unit CMP Camshaft Position Camshaft (the sensor is installed onto the rear of cylinder head) position DLC Data Link Connector Connector for scan tool (also known as:
Checker connector) EMPS Engine Module Programming System Rewriting of control program in ECM DMM Digital Multi-Meter Diagnostic tester for electrical equipment system (5- 8840-2691-0) DTC Diagnostic Trouble Code Self-diagnosis code numbers which indicate trouble condition ECT Engine Coolant Temperature Engine coolant temperature ECM Engine Control Module Core of engine control in engine control computer ECU Electronic Control Unit Computer for various control EGR Exhaust Gas Recirculation Recirculation system which mixes exhaust gas from engine with intake air again to lower the combustion temperature resulting in reduction of NOx.
EMI Electro Magnetic Interference Electro Magnetic Interference Exh Exhaust Exhaust F/B Feed/Back Abbreviation of feedback FT Fuel Temperature Fuel temperature (the sensor is installed onto supply pump.) GND Ground Ground/Earth IAT Intake Air Temperature Intake air temperature J/C Joint/Connection Connector which connects each harness MIL Malfunction Indicator Lamp Warning lamp MIL (diagnosis lamp) PC Pressure Control Pressure control/Common rail pressure PCV Pressure Control Valve Valve which controls fuel flow to common rail and is installed onto supply pump PWM Pulse Width Modulation Pulse width modulated wave QOS Quick On Start Warming-up device RP Rail Pressure Pressure in common rail SBF Slow Blow Fuse Slow-blow type fuse which protects circuits of battery, motor, etc.
SIG Signal Signal