Description of Parameters

Description of parameters

Hint: The engine cylinders are counted starting from the cylinder furthest from the flywheel (right-hand side of the vehicle in the direction of travel)
Bank 1: cylinder 1-3.
Bank 2: cylinder 4-6.

Parameters, value

ECU power supply (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).

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

Engine control module (ECM), temperature (°C)
Measurement range: -40 to +120 °C.
The engine control module (ECM) calculates the temperature from the internal temperature sensor signal in the control module.

Air conditioning (A/C) pressure (Pa)
Measurement range: 0 - 3100 kPa.

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.

Air conditioning (A/C) compressor, status (%)
Measurement range: 0-100%.
The value shows the variable AC compressor's deployment (duty cycle).

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

Atmospheric pressure (Pa)
Measurement range: 0 - 2267 hPa.
The value indicates atmospheric pressure at the engine control module (ECM).
Normal value at 0 meters above sea level is 1013 hPa.

Intake air temperature (IAT) (°C)
Measurement range: -40 to +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).

Manifold absolute pressure (MAP) (Pa)
Measurement range: 0 - 5000 hPa.
Normal pressure (atmospheric pressure at sea level) approximately 1013 hPa with ignition on (open throttle) and approximately 420 ± 30 hPa when idling (intake air temperature approximately 20 °C).

Mass air flow (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 at idle is approx. 5-7 g/s.

Fuel temperature (°C)
Measurement range: -40 to +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 pressure (Pa)
The parameter indicates absolute pressure.
The engine control module (ECM) calculates the pressure from the fuel pressure sensor signal.
Normal value 480 ± 5 kPa when idling, in neutral and with the engine at operating temperature. The pressure falls with the ignition off.

Fuel pump (FP), workload (%)
Measurement range: 0-100%.
Working 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.

Injection time (ms)
Measurement range: 0 - 524 ms.
Engine control module (ECM) controlled signal for injection time.

EVAP valve, work load (%)
Measurement range: 0-100%.
The value indicates the pulse width modulated (PWM) signal transmitted from the engine control module (ECM) to the evaporative emissions system (EVAP) valve.
0 % corresponds to closed valve, i.e. when there is no purging.

Evaporative emissions system (EVAP) flow (g/s)
Measurement range: 0 - 0.85 g/s.
The value indicates the estimated flow through the evaporative emission system (EVAP) valve. Used as an input parameter during compensation for other parts of the system.
Normal value at idle is 0 g/s when there is no purging and 0.85 g/s during purging.

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

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

Hint: Miles/h in certain markets.

Engine speed (rpm)
Measurement range: 0-10,400 rpm.
The engine control module (ECM) derives the engine speed (RPM) from the engine speed (RPM) sensor signal.
Idling speed varies depending on engine temperature. Normal value 650 ± 50 rpm with engine at operating temperature.

Brake pedal position (via CAN) (%)
Measurement range: 0-100%.
The value indicates the position of the brake pedal, calculated from the signal transmitted from the brake control module (BCM).
When the brake pedal is not depressed the value is 0%. The value increases as the pedal is depressed.

Accelerator pedal position (via CAN) (%)
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 (AP), PWM.

Accelerator pedal (AP) position (%)
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 (AP), analog.

Throttle position, 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 position (%)
Measurement range: 0-100%.
The engine control module (ECM) calculates the value from potentiometer 1 for the throttle position sensor. The value indicates the throttle opening. If the engine control module (ECM) detects a fault in throttle position sensor potentiometer 1, the value from throttle position sensor potentiometer 2 will be used to represent the throttle angle. This presumes that the function of throttle position sensor potentiometer 2 is OK.
0 % = throttle shut.
100 % = throttle fully open. This corresponds to an opening angle of approximately 84 degrees.

Hint: Must follow the parameter "Throttle angle, desired value.

Throttle position, circuit 1 (%)
Measurement range: -3 to +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 to +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.

Rear heated oxygen sensor (HO2S), signal bank x (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.

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

Front lambda control slow, bank x
The parameter displays the adaptation factor of the lambda probe.
Measurement range: 0 - 2.
Compensates/multiplies the injection period at the relevant load so that the lambda value can be correctly reached.
Normal value 1.
There are 36 adaptation windows per bank. Which window is active depends on the load and the engine speed. Operates together with "Front heated oxygen sensor control fast, bank x".

Front lambda control fast, bank x
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 "Front lambda control slow, bank x".

Engine cooling fan (FC) (%)
Measurement range: 0-100%.
Engine control module (ECM) PWM signal to the engine cooling fan (FC) control module to activate the engine cooling fan (FC).

Reset valve camshaft, inlet bank x/ exhaust bank x (CA)
Measurement range: 0-100%.
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 is 400 - 900 mA. The value increases/decreases depending on control of the camshaft.

Camshaft shift angle -inlet bank x/ -exhaust bank x (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 approx. 45° CA.
Normal value at idle, engine at operating temperature, approximately 0° CA.
CA = Crank Angle (crankshaft degrees)

Hint: The value must follow the parameter "Camshaft shift angle, inlet/exhaust, desired value".

Camshaft shift angle -inlet/ -exhaust, desired value (CA)

The value indicates the engine control module (ECM) target value for "Camshaft shift angle -inlet bank x/ -exhaust bank x".

Camshaft adaptation -inlet bank x/ -exhaust bank x (CA)
The value indicates the camshaft deviation from the basic setting by calculating the position of the camshaft in relation to the reference positions from the crankshaft.
The value is 0° when the camshaft position (angle) corresponds to the crankshaft position (angle).
Normal value for intake camshaft: 75° CA (+/- 8° CA)
Normal value for exhaust camshaft: 120° CA (+/- 8° CA)
The value is updated following adaptation of the camshaft position. The adaptation is carried out when the camshaft control is not active (fully returned camshaft).

Misfire counter emissions impact / catalytic converter damage, total
The value indicates the number of misfires for all cylinders during the present operating cycle.
The value is reset with ignition off.
Normal value is 0 (= no misfire).

Misfire counter, average
The engine control module (ECM) calculates the average number of misfires in 10 operating cycles, all cylinders.
The value is affected by misfires which affect emissions and cause catalytic converter damage.
The value is reset when erasing diagnostic trouble codes.
Normal value is 0 (= no misfire).

Misfire counter cylinder x, average
The engine control module (ECM) calculates the average number of misfires in 10 operating cycles, each cylinder.
The value is affected by misfires which affect emissions and cause catalytic converter damage.
The value is reset when erasing diagnostic trouble codes.
Normal value is 0 (= no misfire).

Parameter, status

Gear position

Only vehicles equipped with an automatic transmission.
The engine control module (ECM) calculates the status of the signal from the directly connected cable from the transmission control module (TCM).
P/N engaged = gear selector is in "Park" or "Neutral".
P/N disengaged = gear selector position is not in "Park" or "Neutral".

Gear position (via CAN)
Only vehicles equipped with an automatic transmission.
the engine control module (ECM) calculates the status of the signal from the transmission control module (TCM) via CAN.
P/N engaged = gear selector is in "Park" or "Neutral".
P/N disengaged = gear selector position is not in "Park" or "Neutral".

Power supply mode
The value indicates the status of the power supply mode.
- Key removed
- Key recently removed
- Key approved
- Ignition off after Accessory position
- Accessory position
- Accessory position after Ignition on
- Ignition on
- Running
- Start attempt

Ignition switch position (via CAN)
The engine control module (ECM) calculates the status of the signal from the central electronic module (CEM) via CAN communication.

Starter relay
The status indicates if the engine control module (ECM) requested activation of the starter relay.
Active = Engine control module (ECM) activates starter relay.
Not active = Engine control module (ECM) does not activate starter relay.

Cruise control, Set+ (via CAN)
Activated = Set+ on the cruise control keypad depressed.
Not activated = Set+ on the cruise control keypad not depressed.

Cruise control, Set- (via CAN)
Activated = Set- on the cruise control keypad depressed.
Not activated = Set- on the cruise control keypad not depressed.

Cruise control, On/Off (via CAN)
Activated = On/Off on the cruise control keypad depressed.
Not activated = On/Off on the cruise control keypad not depressed.

Cruise control, Resume (via CAN)
Activated = Resume on the cruise control keypad depressed.
Not activated = Resume on the cruise control keypad not depressed.

Cruise control, Cancel (via CAN)
Activated = Cancel on the cruise control keypad depressed.
Not activated = Cancel on the cruise control keypad not depressed.

Brake light switch
The engine control module (ECM) calculates the value from the brake light switch signal.
Activated = brake light switch actuated.
Not activated = brake light switch unaffected.