Description Of Parameters

Description of parameters

Hint: Not all the parameters that are described need to be implemented in the engine control module (ECM). This varies between different systems and markets.

Parameters, value

Engine speed (rpm)
Measurement range 0-10400 rpm.
The engine control module (ECM) derives the engine speed (RPM) from the engine speed (RPM) sensor signal.
The idle speed varies depending on the engine coolant temperature (720 ± 50 r/min).

Battery voltage (V)
Measurement range 0-20 V.
The normal value is 13-14.5 V when the generator (GEN) is charging.
The value indicates the voltage at the engine control module (ECM).

Engine coolant temperature (ECT) (°C)
Measurement range -40 - +120 °C.
The engine control module (ECM) derives the temperature from the engine coolant temperature (ECT) sensor signal.

Outside temperature (via CEM) (°C)
Measurement range -40 - +120 °C.
The engine control module (ECM) derives the temperature from the outside temperature sensor signal.

Intake air temperature (IAT) (°C)
Measurement range -40 - +120 °C.
The engine control module (ECM) calculates the temperature from the temperature sensor for intake air (integrated in the mass air flow (MAF) sensor).

Atmospheric pressure (Pa)
Measurement range 0-2267 hPa.
The value indicates atmospheric pressure at the engine control module (ECM).
Normal value at sea level is 1,013 hPa.

Ignition advance (°)
Measurement range -20 - +62 ° btdc.
Normal value when idling varies depending on the engine coolant temperature (ECT) etc.

Intake pressure sensor (V)
Measurement range 0-5 V.
The normal pressure (atmospheric pressure at sea level) is approximately 3.6 V with the ignition on (open throttle) and approximately 1.9 V at idle.
The voltage increases with pressure in the intake manifold.

Mass air flow (g/s)
Measurement range 0-200 g/s.
The value indicates the mass air flow that passes through the mass air flow (MAF) sensor.
The engine control module (ECM) calculates the value based on the signal from the mass air flow (MAF) sensor.
Normal value with the engine at operating temperature and idling and under no load, neutral and air conditioning (A/C) switched off: approximately 4 g/s.

Note! Other values apply if the generator (GEN) is under load, if for example, high beam is on, the heated rear windshield is on etc.

Air mass (V)
Measurement range 0-5 V.
Operating range approximately 0.5 - 4.5 V. The voltage increases with load.

Accelerator pedal (AP), analog (%)
Measurement range 0 -100 %.
Analog signal from the accelerator pedal (AP) position sensor to the engine control module (ECM).
The value indicates the accelerator pedal (AP) position.
Approximately 8 %= the accelerator pedal (AP) completely released.
Approximately 88 %= the accelerator pedal (AP) completely depressed.
The analog signal is usually used by the engine control module (ECM).

Hint: The value must follow the parameter "Accelerator pedal, PWM".

Accelerator pedal (AP), PWM (%)
Measurement range 0 -100 %.
PWM signal from the accelerator pedal (AP) position sensor to the engine control module (ECM).
The value indicates the accelerator pedal (AP) position.
Approximately 8 %= the accelerator pedal (AP) completely released.
Approximately 88 %= the accelerator pedal (AP) completely depressed.
The PWM signal is used if there is a fault with the analog signal.

Hint: The value must follow the parameter "Accelerator pedal, analog".

Throttle angle, desired value (%)
Measurement range 0 -100 %.
The value indicates the signal transmitted to the throttle unit from the engine control module (ECM).
0 % = throttle shut.
100 % = throttle fully open. This corresponds to an opening angle of approximately 84 degrees.

Throttle angle, actual value (%)
Measurement range 0 -100 %.
The engine control module (ECM) derives the value from the throttle position (TP) sensor, potentiometer 1. The value indicates the throttle opening.
If a fault is detected in the throttle position (TP) sensor, potentiometer 1, by the engine control module (ECM), the value from the throttle position (TP) sensor, potentiometer 2, will be used to represent the throttle angle. This presumes that the function of throttle position (TP) sensor, potentiometer 2 is OK.
0 % = throttle shut.
100 % = throttle fully open. This corresponds to an opening angle of approximately 84 degrees.
Must follow the parameter "Throttle angle, desired value".

Throttle position, circuit 1 (%)
Measurement range -3 - +130 %.
Normal value 0 - 100 %.
There is an electrical fault if the displayed value is outside the measurement range.
The value must increase with increased throttle angle.
Approximately 0 % = throttle closed.
Approximately 100 % = wide open throttle (WOT). This corresponds to an opening angle of approximately 84 degrees.

Throttle position, circuit 2 (%)
Measurement range -4 - +140 %.
Normal value 0 - 100 %.
There is an electrical fault if the displayed value is outside the measurement range.
The value must increase with increased throttle angle.
Approximately 0 % = throttle closed.
Approximately 100 % = wide open throttle (WOT). This corresponds to an opening angle of approximately 84 degrees.

Brake pedal position (%)
Measurement range 0 -100 %.
The value indicates the brake pedal position.
The value is between 3 and 15% when the brake pedal is not actuated. The value increases as the pedal is depressed.

Clutch pedal position (%)
Measurement range 0 -100 %.
The engine control module (ECM) calculates the value from the clutch pedal sensor signal.
The value indicates the clutch pedal position.
The value increases as the pedal is depressed.

Air conditioning (A/C) pressure (Pa)
Measurement range 0- +3100 kPa.
The engine control module (ECM) calculates the value from the signal from the air conditioning (A/C) pressure sensor.
The value indicates the pressure at the high-pressure side of the air conditioning (A/C) system.
The engine control module (ECM) calculates the pressure based on the signal from the air conditioning (A/C) pressure sensor. The pressure is given as a value relative to the atmospheric pressure.

Purge valve, flow (liters per minute)
Measurement range 0-100 liters per minute.
The value indicates the estimated flow of the system through the purge valve. Used as an input parameter during compensation for other parts of the system.
Normal value at idle is 0 liters per minute when there is no purging and 5 - 40 liters per minute during purging.

EVAP valve, operating time on (s)
Measurement range 0 -100,000micros.
The value indicates the time that the PWM signal to the EVAP signal is high, i.e. the time that the valve is open and purging. 1 000 micros corresponds to 1 % opening.
The normal value at idle is 0 micros when there is no purging and 0 - 35 000 micros during purging.

Injection period (s)
Measurement range 0 - 262140 micros.
The signal transmitted from the engine control module (ECM) for the injection period.
Normal value when the engine is idling at operating temperature: 2000 - 4000 micros.

Front heated oxygen sensor (HO2S), power consumption heater pad (A)
Probe heating in the front heated oxygen sensor (HO2S).
Measurement range -63 - +3163 mA.
Actual electrical consumption required to maintain the correct probe temperature.

Front heated oxygen sensor (HO2S)
Measurement range 0 -2.
Normal value is lambda=1.
At rich mixture is lambda < 1.
At lean mixture is lambda>1.

Signal center heated oxygen sensor (V)
Applies only to certain versions (B5244S7).
Measurement range 0-5 V.
The signal from the center heated oxygen sensor (HO2S) to the engine control module (ECM).
Normal value when the engine is running at even load is approximately 0.6 V.

Signal, rear heated oxygen sensor (V)
Measurement range 0-5 V.
The signal from the rear heated oxygen sensor (HO2S) to the engine control module (ECM).
Normal value when the engine is running at even load is approximately 0.6 V.

Long term fuel trim
The parameter displays the adaptation factor of the lambda probe.
Measurement range 0-2 lambda-adap.
Compensates the injection period at the relevant load so that the lambda value can be correctly reached.
Normal value 1.
There are 36 adaptation windows. Which window is active depends on the load and the engine speed.
Works together with "Lambda compensation".

Lambda compensation
The parameter displays the compensation factor of the lambda probe.
Measurement range 0 -2.
lambda value compensation increases or reduces the injection period depending on the deviation.
Normal value 1.
Works together with "Lambda adaption".

Fuel pressure (Pa)
Measurement range 0-1067 kPa.
The parameter indicates absolute pressure.
Normal value 480 ± 5 kPa when idling with the engine at operating temperature. The pressure drops when the ignition is switched off.

Fuel temperature (°C)
Measurement range -40 - +120 °C.
The engine control module (ECM) derives the temperature from the fuel temperature sensor signal. The fuel temperature sensor is integrated in the fuel pressure sensor.

Fuel pump (FP), workload (%)
Measurement range 0 -100 %.
Operating range 10 - 85 %. Normal value 50 % (±10 %).
The value indicates the signal transmitted from the engine control module (ECM) to the fuel pump (FP) control module.

Speed (km/h)
Measurement range 0 -255 km/h
The value displays the vehicle speed.

Hint: Miles per hour in certain markets.

Reset valve camshaft intake (A)
Measurement range 100-1000 mA.
The signal transmitted by the engine control module (ECM) to control the camshaft reset valve.
The value indicates the average current for the PWM signal through the camshaft reset valve for controlling the camshaft shift angle (angle position).
The normal value when the camshaft is deployed and in the fixed position (with the engine idling at operating temperature) is 400 - 900 mA. The value increases/decreases depending on control of the camshaft.

Camshaft shift angle, intake (CA)
Measurement range 0 - 160 CA.
The engine control module (ECM) calculates the value using the signals from the engine speed (RPM) sensor (crankshaft position) and the camshaft position (CMP) sensor (camshaft position).
The value indicates how much the camshaft is deployed.
When the camshaft is in its 0-position (camshaft not deployed), the angle is 0 CA. When the camshaft is fully deployed, the angle is 50 CA.
Normal value at idle, engine at operating temperature, approximately 20 CA.
CA = Crank Angle.

Hint: The value must follow the parameter "Camshaft shift angle, intake desired value".

Camshaft shift angle, intake desired value (CA)
Measurement range 0 - 160 CA.
The value indicates the engine control module (ECM) target value for "Camshaft shift angle, intake".
CA = Crank Angle.

Camshaft adaptation, intake (CA)
Measurement range -50 CA to +50 CA.
The value indicates how the camshaft flanks relate to reference positions on the crankshaft (the reference position on the crankshaft is 6 CA before top dead center (TDC)).
The value is 27 CA when the camshaft 0-position (angle position) is correct. The normal value is 27 CA ±8 CA.
The value is updated following adaptation of the camshaft position (angle position). The adaptation is carried out when the camshaft control is not active (fully returned camshaft), the camshaft is moved back fully in certain operating conditions, such as engine braking.
CA = Crank Angle.

Misfire counter 1-5
Counts the number of misfires during a set number of crankshaft revolutions for each cylinder.
Normal value is 0.

Knock sensor (CA)
Ignition retardation requested due to knock in the cylinders.
Measurement range 0 -72 CA.
Normal value 0 CA.
This value indicates the mean value of the timing retardation for all cylinders.
CA = Crank Angle.

Parameter, status

Engine cooling fan (%)
Measurement range: 0 - 100%
PWM signals transmitted by the engine control module (ECM) to the engine cooling fan control module to control the speed of the engine cooling fan.

Ignition key in position II
OFF = ignition off.
ON = ignition on.

Ignition key in position III
OFF = starting mode off.
ON= start mode on.

Cruise control ON/OFF button
OFF = ON/OFF button unaffected.
ON = ON/OFF button affected.

Cruise control resume button

Note! The cruise control must be on when reading this parameter.

OFF = resume button unaffected.
ON = resume button activated.

Cruise control SET- button

Note! The cruise control must be on when reading this parameter.

OFF= SET- button unaffected.
ON = SET- button affected.

Cruise control SET+ button

Note! The cruise control must be on when reading this parameter.

OFF= SET+ button unaffected.
ON = SET+ button affected.

Air conditioning (A/C) compressor, active
The deployment signal from the engine control module (ECM) to the air conditioning (A/C) compressor relay.
OFF = The engine control module (ECM) does not activate the air conditioning (A/C) compressor relay.
ON = The engine control module (ECM) activates the air conditioning (A/C) compressor relay.

Stop lamp switch
The engine control module (ECM) calculates the value from the stop lamp switch signal.
ON = stop lamp switch on.
OFF = stop lamp switch unaffected.

Camshaft position (CMP) sensor, intake
The signal displays the pulses from the camshaft sensor (intake).
Switches between high and low as the camshaft rotates.