Abbreviations, Definitions
RON CODING = Coding via octane number plug for 4 and 6 cylinder engines except C 30 SE
EXHAUST CODING = Coding of exhaust gas variants (US or ECE) via wiring harness
TRANSM. CODING = Coding of transmission variants (MT or AT) via wiring harness
INTAKE AIR TEMP. = Intake air temperature
COOLANT TEMP. = Coolant temperature
AIR FLOW SENSOR = Air flow meter signal
IDLE CO POT. = Idle CO potentiometer (ECE only)
TPS SIGNAL = Throttle valve potentiometer, recognition of throttle valve position
ENGINE LOAD SIG. = Engine load in ms calculated by air flow meter signal
TORQUE CONTROL = Engine torque on AT vehicles is reduced via the pre-ignition when starting
IAC PULSE RATIO = Pulse ratio of idle speed adjuster
IAC INTEGRATOR = Integrator value of idle speed adjuster
IAC BLOCK LEARN = Pattern recognition value of idle speed adjuster
O2 SENSOR CIRCUIT = Open/closed circuit via oxygen sensor
O2 INTEGRATOR = Integrator value of mixture correction (02) in control unit
O2 BLM IDLE THR. = Block learn mixture characteristic curve at idle speed
O2 BLM PART THR. = Block learn mixture characteristic curve in partial load
BATTERY VOLTAGE = Control unit voltage supply
VEHICLE SP.PULSE = Odometer frequency sensor
INJECTION PULSE = Injection period in ms
ENGINE SPEED = Engine speed when idling
SPARK ADVANCE = Firing angle BTDC calculated by control unit
SIM. IDLE POS.SW = Idle speed position of throttle valve potentiometer
SIM. FULL POS.SW = Full load position of throttle valve potentiometer
FUEL TANK VENT. = Fuel tank vent valve
A/C INFORMAT. SW = Control switch for air conditioning
A/C COMPRESS. SW = Air conditioning compressor
ENG. OIL TEMP.SW = Engine oil temperature switch (used for mixture enrichment)
TRAN.OIL TEMP.SW = Transmission fluid temperature switch (used for increasing engine speed)
PARK/NEUTRAL SW. = Switch for selector lever position P/N
INT. MANIFOLD V. = Intake manifold switching (C 30 SE only)
HALL SENSOR = Hall sensor (phase sensor) on high voltage distributor (C 30 SE only) for
FUEL PUMP RELAY = Fuel pump relay
A/C CUTOFF RELAY = Air conditioning cut-off relay for air conditioning compressor cut-off
AFM = Air Flow Meter
ECU = Electronic Control Unit
Master Cartridge = Program Module
TECH 1 Self-Test Routine = TECH 1 Self-Test
PWM = Pulse Width Modulated signal (throttle valve pot.) from Motronic control unit to transmission control unit
EOT = Engine Oil Temperature
TFT = Transmission Fluid Temperature