Description Of Parameters: General/Miscellaneous

VEHICLE SPEED (VIA CAN) (KM/H)

The value regards the actual vehicle speed and originates from a signal that is sent to the Engine Control Module (ECM) from the Brake Control Module (BCM) and/or Transmission Control Module (TCM) via CAN.

Measurement range: 0 - 260 km/h.

ENGINE SPEED (RPM)

The value regards the actual engine speed. The Engine Control Module (ECM) calculates the speed using signals from the directly connected engine speed (RPM) sensor.

Measurement range: 0 - 10 400 rpm.

Normal value: 850 ± 50 rpm with hot engine.

HINT: Idle speed varies depending on the engine coolant temperature.

ENGINE COOLANT TEMPERATURE (°C)

The value indicates the actual engine temperature. The Engine Control Module (ECM) calculates the temperature using signals from the directly connected engine coolant temperature sensor.

Measurement range: -40 - 125°C.

Normal value: With warmed up engine at idle the temperature deviates between 85 - 108°C depending on the ambient temperature.

HINT: By means of thermostat heating, temperature regulation can be demand controlled. In situations with high load and/or extremely high ambient temperature, the temperature is regulated around 15°C lower than the above normal value.

HINT: The engine is considered to be cool after the engine has been switched off for at least 10 hours. The temperature can then be compared with the ambient temperature and the difference must not be greater than ±5°C.

ELECTRIC COOLANT PUMP (RPM)

The value indicates the actual speed of the electric coolant pump which is connected to the Engine Control Module (ECM) via LIN.

Measurement range: 0 - 5 900 rpm.

Normal value: Approx 2800 rpm with hot engine at idle and maximum requested passenger compartment heat.

HINT: In a trouble-free system the value should follow "Electric coolant pump, requested speed".

ELECTRIC COOLANT PUMP, REQUESTED SPEED (RPM).

The value indicates the requested speed of the electric coolant pump which is connected to the Engine Control Module (ECM) via LIN.

Measurement range: 0 - 5 900 rpm.

Normal value: Approx 2800 rpm with hot engine at idle and maximum requested passenger compartment heat.

THERMOSTAT, ELECTRIC HEATING (%)

The value indicates the actual requested power to the directly connected heater by the thermostat.

Measurement range 0-100%.

0% = no heating.

100% = full heating.

Normal value: 0% with hot engine at idle.

HINT: Temperature regulation of the coolant temperature can be demand controlled using thermostat heating. In situations with high load and/or extremely high ambient temperature, the heater is activated to protect against too high coolant temperatures.

ENGINE OIL TEMPERATURE, CALCULATED (°C)

The value regards a calculated signal and provides information about the engine oil temperature. The temperature is calculated using signals from the engine oil temperature sensor and the coolant temperature sensor.

Measurement range: -40 - 160°C.

Normal value: 90 - 95°C with heated through engine and hot coolant.

NOTE:

Even in the event of a fault with the oil temperature sensor, a plausible value may appear on this parameter.

HINT: Also use the parameter "Engine oil temperature" when fault tracing oil temperature related faults.

ENGINE OIL TEMPERATURE (°C)

The value regards current engine oil temperature. The signal comes from the directly connected engine oil temperature sensor (combined with the engine oil pressure sensor), which is located in the engine's oil pan.

Measurement range: -40 - 160°C.

Normal value: 90 - 95°C with heated through engine and hot coolant.

NOTE:

During the engine's heating up sequence the signal from the sensor can vary considerably. The engine should therefore be heated up before the temperature from the sensor can be trusted.

HINT: Also use the parameter "Engine oil temperature, calculated" when fault tracing oil temperature related faults.

ENGINE OIL PRESSURE (PA)

The value regards the current oil pressure. The signal comes from the directly connected engine oil pressure sensor (combined with the engine oil temperature sensor) and provides information about the oil pressure in the engine.

Measurement range: 50 - 1050 kPa.

Normal value: 150 - 270 kPa at idle with heated through engine and hot coolant. For shorter periods the pressure can be 450 kPa.

HINT: During cold starts the oil pressure, shortly after startup, can be as high as 1000 kPa. This is normal.

CONTROL VALVE, ENGINE OIL PUMP (%)

The value regards the current control signal to the control valve engine oil pump. The signal controls the valve, which, in turn, affects the pump housing size to allow the pump to create a greater glower and thus greater engine oil pressure.

Measurement range 0-100%.

0% = The control valve is not activated (return sprung position), high pump flow, high oil pressure.

100% = The control valve is fully activated, low pump flow, low oil pressure.

Normal value: 50 - 70% at idle with heated through engine.

VOLTAGE FEED CONTROL MODULE (V)

The value indicates actual voltage feed to the Engine Control Module (ECM).

Normal value: Same as battery voltage, i.e. 12.2 - 15.5 V when the alternator charges.

Measurement range 0 - 28.8 V.

MECU POWER SUPPLY (V)

The value indicates the actual power supply to the Central Electronic Module (CEM), which in turn sends the information via the CAN to the Engine Control Module (ECM).

Normal value: 12.2 - 15.5 V (same as battery voltage) when the alternator charges.

Measurement range 0 - 28.8 V.

POWER SUPPLY MODE (STATUS)

The status shows the vehicle's power supply mode. Central Electronic Module (CEM) collects information from relevant control modules and sensors, and generates the parameter. Information is stored in the Central Electronic Module (CEM) and is distributed to other control modules via the communication network that connects the Central Electronic Module (CEM) and the current control module, e.g., CAN.

The following status modes are available:

Key removed.
Key recently removed.
-Key approved.
Ignition off after Accessory position.
Accessory position.
Accessory position after Ignition on.
Ignition on.
Combustion engine running.
Combustion engine in auto-stop.
Combustion engine in start attempt.
Combustion engine in start attempt at manual start.

SENSOR POWER SUPPLY 1 (V)

The value indicates the actual power supply from the Engine Control Module (ECM) to the components that are internally connected to "power supply terminal 1".

Normal range: approximately 5 V.

HINT: The following components are connected to terminal 1: camshaft position sensor intake and engine oil pressure and temperature sensor.

SENSOR POWER SUPPLY 2 (V)

The value indicates the actual power supply from the Engine Control Module (ECM) to components that are internally connected to "power supply terminal 2".

Normal range: approximately 5 V.

HINT: The following components are connected to terminal 2: boost pressure sensor (after the compressor), engine speed (RPM) sensor, fuel pressure sensor high pressure side, camshaft position sensor exhaust, throttle unit, compressor control valve bypass, fuel pressure sensor low pressure side, A/C pressure sensor, brake vacuum sensor, neutral position sensor, Manifold Absolute Pressure (MAP) sensor as well as boost pressure and charge air temperature sensor (after turbo)

SYSTEM RELAY (STATUS)

The status indicates the actual control signal from the Engine Control Module (ECM) to the system relay.

On = the control module activates the system relay.

Off = the control module does not activate the system relay.

Normally the system relay is engaged as soon as the Engine Control Module (ECM) is powered by KL15 or "wake-up" signal from the Central Electronic Module (CEM). The relay releases when the Engine Control Module (ECM) is to be shut down, after completed run-on.

STARTER RELAY (STATUS)

The status indicates the actual control signal from the Engine Control Module (ECM) to the starter relay.

On = the control module activates the starter relay.

Off = the control module does not activate the starter relay.

TEMPERATURE CONTROL MODULE (°C)

The value indicates the actual temperature inside the Engine Control Module (ECM). The temperature sensor is integrated in the control module.

Measurement range: -40 - 140°C.

Normal value: Less than 80°C. At temperatures above 105°C the Engine Control Module (ECM) stores a DTC because the temperatures at this level can be damaging to the control module.

OUTSIDE TEMPERATURE (°C)

The value indicates the current ambient temperature. The temperature is calculated by the signal from the directly connected outdoor temperature sensor which is located in a door mirror.

Measurement range: -40 - 215 °C.

LOAD (%)

Indicates the engine's filling ration where 100% corresponds to 100 kPa air pressure in the intake manifold.

HINT: When the engine is not overcharged the value can reach a maximum of 100%. During overcharging, e.g. using the turbo, the value can exceed 100%.

Normal value: 80% at idle.

CALCULATED LOAD (%)

The value indicates how much of the available load is currently used. Measured in percentage of maximum available torque at the current speed.

Measurement range 0-100%.

Normal value: 15% at idle.

HINT: The value at idle varies depending on which electrical loads (power consumers) are active.

TIME SINCE ENGINE START (S)

The value indicates the time in seconds since the engine was started in the given operating cycle.

HINT: Autostop does not mean that the counter is reset, it only regards the starter with starter button.

Measurement range: 0 - 65 535 s.

ATMOSPHERIC PRESSURE (PA)

The value indicates the actual atmospheric pressure. The value is calculated by the signal from the atmospheric pressure sensor which is integrated in the Engine Control Module (ECM).

Measurement range: 0 - 255 kPa.

Normal value: At sea level the pressure is 101.3 kPa.

HINT: Greater heights produce a lower atmospheric pressure.

ENGINE COOLING FAN (%)

The value indicates the actual control signal to the engine cooling fan and its control unit.

Measurement range 0-100%.

HINT: The engine cooling fan is off up to 7% on the control signal.

AIR CONDITIONING (A/C) PRESSURE (PA)

The value indicates the actual A/C pressure on the climate unit's high pressure side. The value is calculated by the signal from the directly connected A/C pressure sensor. The pressure regards absolute pressure.

Measurement range: 0 - 3200 kPa.

Normal value: 550 - 1 000 kPa at idle, depending on cooling demand (the difference between the ambient temperature and the requested temperature in the passenger compartment).

AIR CONDITIONING (A/C) COMPRESSOR (%)

The value indicates the actual control signal to the AC compressor.

Measurement range 0-100%.

0% = A/C compressor is off.

100% = A/C compressor at full power.

Normal value: 35 - 80% depending on demand from the climate units.

HINT: A/C compressor is off up to 30% on the control signal.

AC RELAY (STATUS)

Shows current status of the A/C relay.

Activated = the relay is actuated and the circuit is closed (A/C compressor is energized).

IGNITION ADVANCE (°BTDC)

The value indicates the actual ignition advance and is calculated from the engine speed (RPM) sensor signal.

Measurement range: -20 - 62° CA before top dead center.

Normal value at idle varies with coolant temperature.

MISFIRE COUNTER CATALYTIC CONVERTER DAMAGE, TOTAL

The value indicates the number of misfires with negative affect on the catalytic converter that are registered during the current driving cycle.

Normal value: 0, i.e. no misfires.

HINT: The value is reset every driving cycle.

MISFIRE COUNTER EMISSIONS IMPACT, TOTAL

The value indicates the number of misfires with emission impact that are registered during the current driving cycle.

Normal value: 0, i.e. no misfires.

HINT: The value is reset every driving cycle.

MISFIRE COUNTER CYLINDER X, AVERAGE

The value indicates a calculated average value of the number of misfires registered during the last 10 operating cycles on the relevant cylinder. Both misfires with impact on the catalytic converter and emissions are included in the calculation.

Normal value: 0, i.e. no misfires.

HINT: The value is reset when the DTCs in the Engine Control Module (ECM) are erased.

HINT: Firing order for the cylinders: 1-3-4-2.

CAMSHAFT SHIFT ANGLE, INTAKE (CA)

The value indicates the actual shift angle on the camshaft on the intake side. The control module calculates the value using the signals from the engine speed (RPM) sensor (crankshaft position) and the camshaft position sensor (camshaft position).

Measurement range: 0 - 100° CA.

Normal value: Approx. 0% with hot engine at idle.

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. 50° CA.

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

CAMSHAFT SHIFT ANGLE, INTAKE DESIRED VALUE (CA)

The value indicates the actual requested shift angle on the camshaft on the intake side.

Measurement range: 0 - 100° CA.

Normal value: Approx. 0% with hot engine at idle.

CAMSHAFT ADAPTATION, INTAKE (CA)

The value indicates the camshaft's deviation from the default setting by calculating the position of the camshafts in relation to reference positions from the crankshaft. The value is 0° when the camshaft position (angle position) corresponds with the crankshaft's position (angle position).

Measurement range: 0 - 100° CA.

Normal value: 44° CA (±8° CA).

HINT: 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).

CAMSHAFT POSITION, INTAKE (CA).

The value indicates the camshaft's actual angle. The value is used to calculate the difference between the camshaft position and camshaft adaptation which then indicates the camshaft's shift angle.

Normal value: 44° CA (± 8° CA).

CAMSHAFT SHIFT ANGLE, EXHAUST (CA)

The value indicates the actual shift angle on the camshaft on the exhaust side. The control module calculates the value using the signals from the engine speed (RPM) sensor (crankshaft position) and the camshaft position sensor (camshaft position).

Measurement range: 0 - 100° CA.

Normal value: Approx. 0% with hot engine at idle.

HINT: The value must follow the parameter "Camshaft shift angle, exhaust setpoint value".

CAMSHAFT SHIFT ANGLE - EXHAUST, DESIRED VALUE (CA)

The value indicates the actual requested shift angle on the camshaft on the exhaust side.

Measurement range: 0 - 100° CA.

Normal value: Approx. 0% with hot engine at idle.

CAMSHAFT ADAPTATION, EXHAUST (CA)

Measurement range: 0 - 100° CA.

Normal value: 74° CA (±8° CA).

HINT: 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).