Description Of Parameters

Description of parameters

Engine speed
Measurement range 0-8160 rpm.
Idling speed approximately 750 rpm.

Vehicle speed
Measurement range 0-255 km/h
Vehicle speed.
The control module derives the value from the combined instrument panel

Engine coolant temperature (ECT)
Measurement range -48 to +142°C.
Engine temperature.

Engine coolant temperature, start
Measurement range -48 to +142°C.
Engine temperature when ignition was last switched on.

Throttle angle
Measurement range 0 -100°.
Throttle opening.
0° with the throttle closed and 75-100° with the throttle fully open.

Air mass, actual
Measurement range 0-16384 kg/h
Measured air consumption from the mass air flow (MAF) sensor.
Normal value is approximately 8-13 kg/h at idling speed with the engine at operating temperature.

Air consumption
Measurement range 0-1,389 mg/stroke.
Air consumption per crankshaft revolution.
A measurement of the engine load. The normal value is approximately 100 mg/stroke when the engine is idling at operating temperature.

Mass air flow (MAF) sensor actual, mass air flow (MAF) sensor calculated, idle speed
Measurement range 0-+100%
The difference between the measured consumption from the mass air flow (MAF) sensor and a calculated reference value.
The value is only applicable during turbocharger (TC) control.

Battery voltage
Measurement range 0-28.8 V
Battery voltage after the system relay.
Normal value is 13.5 -14.5 V when the generator (GEN) is charging.

Air temperature
Measurement range -48 to +142°C.
Intake air temperature measured after the charge air cooler (CAC)).

Injection period
Measurement range 0-262 ms
Injector opening time.
The normal value is approximately 1.5-2 ms when the engine is idling at operating temperature.

Long term fuel trim, part load
Measurement range -50- +50 %
The value indicates how much the injection period at part load has been adjusted compared to a reference value.
The value is first updated after the engine has been revved

Long term fuel trim, idle speed
Measurement range -131- +131 ms
The value indicates how much the injection period at idling speed has been adjusted compared to a reference value.
The value is first updated after the engine has been revved up.

Ignition advance

Measurement range 72° before top dead center (TDC) to 23° after top dead center (TDC).
Normal value when idling is approximately 0-15°.

Short-term fuel trim
Measurement range -50- +50 %
Short-term fuel trim oscillates between -5 and +5 at lambda = 1 when the engine is idling at operating temperature.

Front heated oxygen sensor (HO2S)

Measurement range 0-5 V
Voltage from the front heated oxygen sensor (HO2S).
Oscillates between 0 and 1 V when fuel trim is activated.

Rear heated oxygen sensor (HO2S)
Measurement range 0-5 V
Voltage from the rear heated oxygen sensor (HO2S).
Oscillates between 0 and 1 V when the three-way catalytic converter (TWC) is cold (>300°C).
Stabilizes at 0.2-0.7 V when the three-way catalytic converter (TWC) is at operating temperature (<300°C)

Idle speed pulse ratio
Measurement range 0 -100 %.
Idle air control (IAC) valve opening.
The normal value is approximately 20-40% when idling with the engine at operating temperature.

Idle air trim
Measurement range -50 to +50 %.
The value shows by how much idle air control (IAC) valve opening has been adjusted in relation to a predetermined value.

Idle air trim adaptation A/C
Measurement range -50- +50 %
Idle air trim adaptation with the A/C compressor activated.
The value shows by how much idle air control (IAC) valve opening has been adjusted in relation to a reference value.

Turbocharger (TC) control valve
Measurement range 0 - 100%.
Turbocharger (TC) control valve opening.
A value over 0% means the engine power is regulated using the valve.
The value only applies when the turbocharger control valve is activated.

EVAP pulse ratio
Measurement range 0 -100%
Canister purge (CP) valve opening.
The higher the value, the more open the valve and the quicker the canister can be vented.

Air conditioning (A/C) pressure
Measurement range 0 - 3442 mbar.
Pressure in the air conditioning (A/C) system.

Boost pressure 1
Measurement range 0 -2400 mbar.
Pressure in the intake system, measured in the charge air cooler (CAC) hose between the throttle and charge air cooler (CAC).
Normal value when idling is approximately 1000 mbar.

Boost pressure 2 (MAP)
Measurement range 0 -2400 mbar.
The pressure in the intake system, measured in the intake manifold.
Normal value when idling is approximately 400 mbar.

Camshaft position

Measurement range -66° -30°.
The camshaft position in relation to the crankshaft.
The value varies depending on how camshaft is controlled. Camshaft control only occurs when the engine is cold

Long term fuel trim status
O/L= Open Loop, fuel trim not active
C/L= Closed Loop, fuel trim active

A/C requested
Displays whether the engine control module (ECM) has requested that the ECC control module starts the air conditioning (A/C) compressor.
The A/C-compressor is permitted to start if the air conditioning (A/C) pressure is below a parameter.
Yes = ECC requests that the A/C compressor starts.
No = ECC does not request that the A/C compressor starts

Air conditioning (A/C) relay
Yes = A/C relay activated.
No = A/C relay not activated.

Immobilizer locked
NO= Immobilizer control module permits start.
Yes = Immobilizer control module does not permit start.

VIN code learned
Yes = Engine control module (ECM) has learned the VIN-code.
No = Engine control module (ECM) has not learned any VIN-code.

Faulty VIN code
Yes = Different VIN codes in the immobilizer control module and engine control module (ECM).
No = Immobilizer control module and engine control module (ECM) have the same VIN-code.
The parameter is relevant only when the communication between the immobilizer control module and the engine control module (ECM) is functioning.