Description of Parameters

Description of parameters

Steering wheel module (SWM)

Cruise control, resume previous selected speed
Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

Cruise control, decreased speed
Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

Cruise control, increased speed
Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

Cruise control, rocker switch
Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

Rain sensor switch
Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

Immobilizer

Steering wheel lock, power supply
Indicates if the power supply to the steering wheel lock is on or off.
The power supply is only active during the locking cycle (approximately 1 second).

Signals from start control module (SCU) to Central electronic module (CEM) (not S60 (11-), V60 or XC60 with structure week after 1045, or V70 (08-), XC70 (08-), S80 (07-), S80L from model year 2012).
Indicates the signals transmitted via LIN from the start control module (SCU) to the central electronic module (CEM).
The values that may be shown are:
- Switch 1 by start button (LIN signal). Not activated/Activated
- Switch 2 by start button (LIN signal). Not activated/Activated
- Switch 1 by start button, directly connected, Not activated/Activated (shows status of the directly connected signal from switch 1 by start button)
- Contact breaker for indicating key in ignition switch. Not activated/Activated
- Contact breaker for activating key ejection. Not activated/Activated
Contact breaker activated only when the key is docked and pressed in at removal.
- Locking key. Not activated/Activated

Signals from immobilizer antenna unit (IAU) to Central electronic module (CEM) (only S60 (11-), V60 and XC60 with structure week after 1045, or V70 (08-), XC70 (08-), S80 (07-), S80L from model year 2012).
Shows the directly connected signals from the start button's two switches to the Central electronic module (CEM).

The values that may be shown are:
- Switch 1 at start button, directly connected, Not activated/activated
- Switch 2 at start button, directly connected, Not activated/activated

Power supply mode
Shows present current supply mode. The current supply mode affects which functions and systems are active or are possible to activate.
The values that may be shown are:
- Key removed
This mode is reached 1 minute after the key has been removed from the ignition. The functions in the car that still are supplied with voltage are, e.g., alarm system and the system for keyless vehicle.
- Key recently removed
This mode is reached directly after the key has been removed from the ignition, and lasts for 1 minute. Functions such as Key warning and communication services for, e.g., phone module are usable this extra minute.
- Key approved
The key is in the ignition, position 0, and the key is approved according to the ID-list stored in the Central electronic module (CEM).
- Ignition off after accessory position
Key in position 0 after it has been in position 1. Synchronization of activities related to internal work memories takes place.
- Accessory position
Key in position 1. Infotainment functions and Telematic functions are fully available until the units sense low voltage from the battery. Then they go to energy save mode.
- Accessory position after Ignition on
Key in position 1 after the engine has been running. Normal accessory mode plus the functions that are related to the engine being shut off.
- Ignition on
Key in position 2.
- Running
Key in position 2 and engine running.
- Start attempts
Key in position 3. Starter motor tries to start the engine.

Alcolock, counter by-pass (2008-)
The Alcolock has an internal counter that stores the number of times that the system has been by-passed. When the counter reaches the maximum value of 255, it will not reset automatically and will not increase with further by-passes. Resetting is performed via VIDA/vehicle communication.

Alcolock, events (2008-)
Five parameters that show the history of the five last text messages that have appeared in the combined instrument panel.

Alcolock, start inhibitor events (2008-)
Five parameters that show the five last results from the Alcolock.
The values that may be shown are:
- Start permitted
- Start not permitted

Global time events (2008-)
Five parameters that show global time during the five last occasions that the Alcolock was used.

Central locking

Number of programmed remote keys
Only applies to vehicles without keyless entry (KVM).
Indicates the number of remote keys that are programmed in the vehicle.

Status, child-proof lock
Indicates the status of the child-proof lock or if any fault has occurred when last locking or unlocking.
The values that may be shown are:
- Not activated
- Activated
- Fault when locking
- Fault when unlocking

Command history from remote key
Only applies to vehicles without keyless entry (KVM).
Indicates the values for the five last commands from the remote key.
Value displayed for each occurrence:
- Remote key ID.
- The button which has been pressed.
- Status of the remote key's battery voltage: Full or low.
- Global time in minutes.

Status for door switches
Indicates the status of the switches at the doors and hatches, which indicate open doors or hatches.
Status of all contact breakers can be open or closed.

Status of power supply to lock motors
Indicates if the power supply to the lock motors is active or not.
Supply is only active during the time that locking or unlocking is carried out, i.e. for approximately 0.5 seconds.

Power supply to lock motor for fuel tank filler cap
The value can be activated or not activated.
Supply is only activated during locking or unlocking

External lighting

Stop (brake) lamps
Reading off if the stop lamp is on or off.

High level stop lamp
Reading off if the high-level stop lamp is on or off.

Brake lamp switch
Reading off if the stop lamp is active or not active.

Back-up (reversing) lamps
Reading off if the back-up (reversing) lamp is on or off.

Left turn signal lamp
Reading off if the left-hand turn signal lamps are on or off.

Right turn signal lamp
Reading off if the right-hand turn signal lamps are on or off.

Left low beam
Reading off if the left-hand low beam is on or off.

Right low beam
Reading off if the right-hand low beam is on or off.

License plate lighting
Reading off if the license plate lighting is on or off.

High beam
Reading off if the high beam is on or off.

Parking lamps, left front
Reading off if the lamp is on or off.

Parking lamps left-hand rear
Reading off if the lamp is on or off.

Parking lamps, right front
Reading off if the lamp is on or off.

Rear right parking lamp
Reading off if the lamp is on or off.

Front position sensor, value
Measurement range 0 to +5 V. Shows sensor signal for the front position sensor. The normal value when the vehicle is on a level surface and is unladen is approximately +2.5 V.

Other information

Fuel level
Presents current fuel level on the pump side as a value between 0-5 V.

Fuel level, ejector side
Presents current fuel level on the ejector side as a value between 0-5 V.
Applies only to cars with saddle tank.

The windshield washer fluid level
Displays the status of the windshield washer fluid level.
Above 1 liter = there is more than 1 liter of washer fluid left in the reservoir.
Below 1 liter = there is less than 1 liter of washer fluid left in the reservoir.

Power supply to pedals
Indicates the status of the power supply to sensors at the accelerator pedal (AP), brake pedal and clutch pedal.
The value can be activated or not activated.

Signals from the steering wheel module (SWM) to the central electronic module (CEM), via LIN.
Indicates the command transmitted via LIN during activation of any of the functions on the steering wheel module (SWM).

Signals from the light switch module (LSM) to the central electronic module (CEM), via LIN.
Indicates the command transmitted via LIN during activation of any of the functions on the light switch module (LSM).

Hazard warning signal flashers, status
Displays the status of the hazard warning signal flasher switch.
Activated = The switch for the hazard warning signal flashers is activated.
Not activated = The switch for the hazard warning signal flashers is not activated.

Twilight sensor, voltage, value
Measurement range: 0.25 - 4.90 V.
Shows the current light intensity.
Increased light intensity reduces the voltage over the photodiode.

Solar sensor, voltage, value
Measurement range: 0.15 - 4.85 V.
Shows the current light intensity.
Increased light intensity reduces the voltage over the photodiode.
From and including structure week 200746, the sun sensor has been replaced with twin sensors.

Front position sensor, value (only on vehicles from model year 2012)
Measurement range 0 to +5 V. Shows sensor signal for the front position sensor.

Rear position sensor, value (only on vehicles from model year 2012)
Measurement range 0 to +5 V. Shows sensor signal for the rear position sensor.

Pedal position sensor

Clutch pedal position, external
Reading off the clutch pedal's position. Measurement range 0 - 100 %.
Applies only to vehicles with:
- Manual transmission.
- Electric parking brake.
Vehicles with this sensor do not have Clutch pedal switch, internal, 25 %.

Clutch pedal switch, internal, 75%.
Reading off if the clutch pedal is depressed 75% or more.
Applies only to cars with manual transmissions.

Clutch pedal switch, internal, 25%.
Reading off if the clutch pedal is depressed 25% or more.
Applies only to vehicles with:
- Manual transmission.
- Mechanical parking brake.
- 4 cylinder engine, 2.0 liter with 4 valves/cylinder
Vehicles with this sensor do not have Clutch pedal position sensor, external.

Brake pedal switch
Reading off if the brake pedal is active or not active.

Accelerator pedal (AP) position sensor
Reading off the accelerator pedal position. Measurement range 0-100 %.

Relay

Relay ignition on, engine compartment
Reading off whether relay ignition on for engine compartment is active or not active.

Relay ignition on, luggage compartment
Reading off whether relay ignition on for luggage compartment is active or not active.

Comfort relay
Reading off if the comfort relay is active or not active.

Relay, interior lighting
Reading off whether relay for interior lighting is active or not active.

Relay increased X-supply
Reading off whether relay increased X-supply is active or not active.

Relay washer motor, front
Reading off whether relay washer motor front is active or not active.

Automatic start/stop of engine

Note! Only on vehicles with the function automatic start/stop of engine.

Secondary Battery Relay
Shows if the Central electronic module (CEM) requests from Engine control module (ECM) that the secondary battery relay should be activated or not. Central electronic module (CEM) requests activation of the relay when the secondary battery needs to be charged.

Voltage secondary battery
Shows secondary battery's voltage.
Measurement scale: 0-18 V
When the engine is running (alternator charges) and the secondary battery is connected to the vehicle's electrical system, the secondary battery's voltage will be the same as the rest of the electrical system's voltage. If the secondary battery disconnected, the voltage will be lower.

Voltage secondary battery, latest stored
Shows secondary battery's latest stored voltage.
Measurement range 0-18 V.
For every new driving cycle, the Central electronic module (CEM) measure the voltage on the secondary battery and stores this value. If the vehicle has been parked with the ignition off for more than approx. 10 hours, the Central electronic module (CEM) uses the new voltage value to calculate how long time the secondary battery needs to be charged. If the vehicle has been parked with the ignition off for less than approx. 10 hours, the Central electronic module (CEM) uses the previously stored voltage value to calculate how long time the secondary battery needs to be charged.

Voltage secondary battery, lowest average value
Indicates the secondary battery's lowest stored average voltage.
Measurement scale: 0-18 V
Every time autostart is activated, the Central electronic module (CEM) continuously reads the secondary battery's voltage during the start sequence (during the time the secondary battery supplies the vehicle). The lowest value that is registered is saved by the Central electronic module (CEM) in its memory. At the next autostart, this sequence is repeated and the Central electronic module (CEM) calculates the average value of the previously registered voltage values and the last value. The average value is calculated at every autostart. This average value forms the basis for the secondary battery's SoC and capacity. If the calculated average voltage falls below 10.4 V in the actual operating cycle, the automatic start/stop of the engine function is no longer permitted. This is to prevent the battery from discharging to much.

Charging need secondary battery
Shows how long time the secondary battery needs to be charged.
Measurement range: 0-65535 seconds.
Using the secondary battery's voltage at the start of the driving cycle, the Central electronic module (CEM) calculates how long time the secondary battery needs to be charged.

Charging time secondary battery
Shows how long time the secondary battery has been charged during the latest driving cycle.
Measurement range: 0-65535 seconds.

Temperature secondary battery
Indicates the calculated temperature of the secondary battery.
Measurement range: -40-+215 °C.

Downtime
Shows how long time the vehicle has been parked, with the ignition off, at the last instance.
Measurement range: 0-24 hours.

Voltage/power-sensitive consumers of electricity
Shows if voltage or power-sensitive consumers of electricity are activated/engaged or not. Depending on which power consumers are connected, the alternator voltage will be controlled differently. Included in the brake energy regeneration function.
The following can be shown:
- No voltage/power-sensitive consumers of electricity activated.
- Voltage sensitive consumers activated. For example: headlights, fog lights, blower fan motor, windscreen wipers.
- Voltage/power-sensitive consumers activated. E.g., electrical cooling fan motor, preheating coil, trailer connected, passenger compartment fan motor.
Depending on which power consumers are connected, the alternator voltage will be controlled differently. When voltage-sensitive consumers are activated, the alternator voltage is not allowed to vary too quickly. When voltage/power-sensitive consumers of electricity are activated, then the alternator voltage is not allowed to be lower than approx. 13.2 V. This is so that the available power will not be too low.

Battery Monitoring Module

Note! Only on vehicles with the function Automatic engine start/stop and/or Brake energy regeneration.

Battery current
The parameter shows the current in respectively out of the battery.
Measurement range: -512- +512 A.
The value shows the vehicle's actual power consumption calculated by the battery monitoring sensor via the Central electronic module (CEM). The battery monitoring sensor registers the current in to or out of the battery and its size. With the ignition on without the external battery or battery charger connected, the vehicle's actual power consumption can be measured. By switching on different consumers their power consumption can be noted.

Caution! With the engine running, external battery or battery charger connected, it is only possible to note whether current goes in to or out of the battery and its size. If a consumer is then switched on in the vehicle, it is not guaranteed to be noted as the alternator/battery charger compensates for the current change.

Battery voltage, battery monitoring sensor
The parameter shows the battery voltage at the battery poles.
Measurement range: 0-16 V.
The value shows the battery's current voltage calculated by the battery monitoring sensor via the Central electronic module (CEM).

Temperature (main) battery
The parameter indicates the battery's calculated temperature.
Measurement range: -40 - +80 °C.
The battery monitoring system calculates battery's internal temperature (battery acid) from the negative pole's temperature with the aim of regulating the correct charging voltage and calculating the correct battery capacity.

Charge level (main level) battery (SoC State of Charge)
The parameter indicates the battery's calculated charge level.
Measurement range 0-100%.
The value indicates the battery charge level calculated by the battery monitoring system via the Central electronic module (CEM). Expressed as the amount of electrical energy that can be stored in a fully charged battery. Stated in % of full charge. Also called State of Charge, SoC

Charge balance battery
The parameter indicates the actual charge balance of the battery.
Measurement range: -100 - +100 Ah.
The value indicates the charge balance calculated by the battery monitoring sensor via the Central electronic module (CEM) for the actual operating cycle. A positive value indicates that the battery is charged with energy (increased its capacity). A negative value indicates that the energy is discharged from the battery (reduced its capacity).

Calculating battery status
The parameter indicates the actual status of the battery monitoring sensor's calculation of the battery status.
Not reliable = The sensor's calculation is not reliable.
Reliable = The sensor's calculation is reliable.
There are situations where the battery monitoring sensor's calculations of the battery's status temporarily are not reliable. Applies when charging of the battery takes place directly on the battery's terminals or when resting current consumption is more than 250 mA during 7 days. This means that the sensor never gets the possibility to measure the battery's resting voltage and thus not calculate the battery's charging status. If calculation is not reliable, functions like Brake energy recycling as well as Automatic start/stop of engine are blocked.

Standby current average value
The parameter indicates the actual status of the battery monitoring sensor's calculation of the battery status.
Measurement range: 0 - 250 mA
In "sleep mode", the battery monitoring sensor registers the vehicle's standby current every minute. The readout indicates the standby current's average value that the vehicle has had over the last 10 hours that the car has been in "sleep mode". The average value of the vehicle's standby current should be less than 25 mA.

Communication battery monitoring sensor, status
The parameter indicates the actual status of communication between the battery monitoring sensor and the Central electronic module (CEM) via the serial communication method, LIN.
The following can be shown:
No communication = Communication not working.
Communication OK = Communication works.
In case of communication error, there will be a fault code stored in Central electronic module (CEM).

Hint: In case of a fault or when the fault becomes intermittent, it can take up to 10 seconds for the control module to show the correct status.

Battery monitoring sensor, status
The parameter indicates the actual status of the internal checks that the battery monitoring system performs.
The following can be shown:
Internal fault detected - Fault detected.
Fault-free = No fault detected.
In case of detected internal error, there will be a fault code stored in Central electronic module (CEM).

Hint: In case of a fault or when the fault becomes intermittent, it can take up to 10 seconds for the control module to show the correct status.

Battery operating time since reset of battery monitoring sensor
The parameter indicates how long the battery monitoring sensor has calculated the battery to be in the vehicle for.
Measurement range: 0 - 4095 days.

Note! At reset of information about current feed when, among others, the battery monitoring sensor (BMS) is reset, the value for operating time will be reset.

Request charge voltage alternator
The parameter indicates the voltage that the alternator should generate at the actual point of driving.
Measurement range: 10.6 - 16.0 V
In case of detected internal error, there will be a fault code stored in Engine control module (ECM).

Note! On some occasions the Engine control module (ECM) permits other voltage levels than the request does. This occurs for example when the Engine control module (ECM) activates the brake energy regeneration function.

Alternator control
The parameter indicates the actual status of alternator control. The alternator is controlled differently depending on the engine's efficiency, power consumption in the vehicle and the battery's status.
The following can be shown:
Conventional charging.
Brake energy regeneration, slow.
Brake energy regeneration, fast.
Brake energy regeneration, slow without discharge.
Battery reconditioning.
Battery identification.
For further information, see Design and function Brake energy regeneration.