Part 2
Description of parameters
Stoplamp, right, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Stop (brake) light switch, status
Displays the status of the stoplamp switch.
Activated = stop lamp switch is activated.
Not activated = stop lamp switch is not activated.
Low beam, left, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Low beam, right, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Parking lamps, group 1, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Parking lamps, group 2, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Fog lamp, rear, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Back-up (reversing) lamp, status
Displays the status of the reversing lamp.
Activated = back-up (reversing) lamp comes on.
Not activated = back-up (reversing) lamp does not come on.
Hazard warning signal flashers, status
Indicates the status of the hazard warning lamp switch.
Activated = the button for hazard warning lamps is depressed.
Not activated = the button for hazard warning lamps is not depressed.
Interior lighting, value
Measurement range 0 to 100 % of supply voltage.
The normal value when the supply voltage is 13.5 V is approximately 98 %.
When the supply voltage exceeds 13 V, the voltage level is regulated using pulse width modulation. The value indicates what proportion of the voltage level is being used.
Lamp, seat belt reminder, status
Displays the status of the lamp, seat belt reminder.
Activated = seat belt reminder lamp lit.
Not activated = seat belt reminder lamp lit.
Lighting rotary switch, status
Displays the status of the lighting rotary switch.
Activated = lighting switch activated.
Not activated = lighting switch not activated.
Relay
Relay for the horn, status
Indicates the status of the relay for the horn.
Activated = the relay for the horn is activated.
Not activated = the relay for the horn is not activated.
Relay, interior lighting, status
Displays the status of the relay, interior lighting. This relay supplies voltage to:
Courtesy lighting.
Roof lighting.
Lighting in sun visor.
Lighting in glove compartment.
Activated = relay, interior lighting is activated.
Not activated = relay, interior lighting is not activated.
Relay extended X-supply, status
Displays the status of extended X-supply, status. Extended X-supply, supplies voltage to:
Cigarette lighter socket in passenger compartment.
Seat heating.
Parts of the SRS system.
Parts of the climate control system.
Speed control.
Activated = the extended X-supply is activated.
Not activated = the extended X-supply is not activated.
Relay infotainment, status
Displays the status of relay infotainment.
Activated = relay, infotainment is activated.
Not activated = relay, infotainment is not activated.
Fuel pump (FP) relay, status
Displays the status for the fuel pump relay.
Activated = fuel pump relay activated.
Not activated = fuel pump relay not activated.
Relay washer motor, front, status
Displays the status of the washer motor, front.
Activated = washer motor for windshield is activated.
Not activated = washer motor for windshield is not activated.
Rear washer motor relay, status
Displays the status of the rear washer motor relay.
Activated = washer motor for rear windshield is activated.
Not activated = washer motor for rear windshield is not activated.
Relay, headlamp washing, status
Displays the status of the relay, headlamp washing.
Activated = headlamp washing is activated.
Not activated = headlamp washing is not activated.
Relay, rear windshield heating, status
Displays the status of the relay, rear windshield heating.
Activated = rear windshield defroster is activated.
Not activated = rear windshield defroster is not activated.
Relay front fog lamps, status
Note! On vehicles equipped with the function for running lights, the relay supplies the front fog lights instead of the running lights.
Displays the status of the relay, fog lamps.
Activated = relay, front fog lamps are activated, front fog lamps come on.
Not activated = relay, front fog lamps are not activated, front fog lamps do not come on.
Relay high beam, status
Displays the status of the relay, high beam.
Activated = relay full beam activated.
Not activated = relay full beam not activated.
Automatic start/stop of engine
(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 range 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 (2011-)
Note! Only on vehicles with the function Automatic engine start/stop and/or Brake energy regeneration.
Note! For model year 2010, and also model year 2011 with engine profile D4164T, the battery monitoring sensor is diagnosed by Engine control module (ECM).
Battery current
The parameter shows current in as well as out from the battery. Measuring 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.
Important! 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's voltage at the battery's terminals. Measuring range: 0-16 V. The value shows the battery's current voltage calculated by the battery monitoring sensor via Central electronic module (CEM).
Temperature (main) battery
The parameter shows the battery's calculated temperature. Measuring range: -40 - + 80 °C. The battery monitoring sensor calculates the battery's internal temperature (battery acid) based on the minus terminal's temperature to control the right charging voltage as well as calculate the right battery capacity.
Charge level (main level) battery (SoC State of Charge)
The parameter shows the battery's calculated degree of charge. Measuring 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 shows current charging balance for the battery. Measuring 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 shows current status of the battery monitoring sensor's calculation of battery status. Not reliable = Sensor's calculation is not reliable. Reliable = 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 shows current status of the battery monitoring sensor's calculation of battery status. Measuring range: 0 mA- 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 shows current status of communication between the battery monitoring sensor and Central electronic module (CEM) on the serial communication net LIN. The following may be shown: No communication = Communication failure. Communication ok = Communication works. In case of communication failure, a fault code will be 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 shows current status of the internal control that the battery monitoring sensor performs. The following may be shown: Internal failure detected = Failure detected. No failure = No failure detected. In case of detected internal failure, a fault code will be 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. Measuring range: 0 days - 4095.
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 shows what voltage the alternator should generate in the current driving situation. Measuring range: 10.6 -16.0 V In case of detected internal failure, a fault code will be stored in Central electronic module (CEM).
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 shows current status for alternator control. The alternator will, depending on the engine's efficiency, power consumption in the vehicle, and the battery's status be controlled differently. The following may be shown: Conventional charging. Regeneration brake energy, slow. Regeneration brake energy, fast. Regeneration brake energy, slow without charging. Reconditioning battery. Battery identification. For more information, see Design and function Brake energy regeneration.