Central Electronic Module (Cem) - Design and Function: Other Volvo V40 I рестайлинг

Activating components/functions

This function allows the system components/functions to be activated individually. The ignition must be on for activation to be possible.

The following components and functions can be activated

1. high beam
2. low beam
3. parking lamps
4. rear fog lamps
5. front fog lamps
6. bulb failure warning sensor
7. instrument lighting
8. windshield wipers
9. tail lamps/side marker lamps
10. tailgate wiper

For further information about activation, see Description of activation .

Reading off input and output signals

Using this function, the values and status of the control module input and output signals can be continuously read off.

The following parameters can be read off

1. the switch for high beam flash, input signal
2. lighting switch, input signal
3. high/low beam switch, input signal
4. high beam, high beam warning lamp and the socket for auxiliary lamps, output signal
5. low beam, output signal
6. parking lamps, output signal
7. tail lamps/side marker lamps, output signal
8. rheostat turn angle
9. lighting in the combined instrument panel, infocenter, cigarette lighter etc.
10. switch for front fog lamps, input signal
11. front fog lamps, output signal
12. switch for the rear fog lamp, input signal
13. rear fog lamp, output signal
14. stop (brake) light switch, input signal
15. back-up (reversing) lamp switch, input signal
16. warning lamp for the bulb failure warning sensor, output signal
17. intermittent wiper switch in the windshield wiper lever, input signal
18. parking position switch in the windshield wiper motor, input signal
19. windshield wiper motor via the windshield wiper lever, output signal
20. switch for the windshield washer, input signal
21. switch for the tailgate wiper, input signal
22. tailgate wiper motor, output signal
23. switch for the tailgate washer, input signal
24. ignition switch position, input signal
25. battery voltage. 15/2-supply from the ignition switch
26. speed signal

For further information about parameters, see Description of parameters .

Programming and reading off the programmed values, central electronic module (CEM)

With this option, the data in the control module can be programmed and read off. The aim of programming is to adapt the system to the type of body, market requirements and the equipment level.

All these functions are dealt with via VIDA vehicle communication.

Programming automatic low beam

This parameter determines whether low beam should be on when the ignition is switched on and the lighting switch is in position 0.

This function is market dependent. Contact the dealer if you are not sure about this function. Unless otherwise stated, automatic low beam is standard for the USA.

Programming twin headlamps

This parameter indicates if the car is equipped with twin headlamps (separate headlamp inserts for high and low beam) or not.

Note. If the car is equipped with separate headlamp inserts for high and low beam, low beam will be lit when high beam or high beam flash is activated.

Programming the front fog lamps

This parameter indicates whether the car is equipped with front fog lamps or not.

Note. The parameter must be programmed when installing after market fog lamps.

Programming the tailgate wiper

This parameter indicates whether the car is equipped with a tailgate wiper or not.

Programming the tailgate wiper when reversing

This parameter indicates whether the tailgate wiper starts when back-up (reverse) gear is selected or not.

Note. The tailgate wiper only starts if the windshield wipers are activated.

Reading off the follow-me-home lights

This parameter indicates how long the follow-me-homes should light.

Note. The parameter can only be read. It cannot be programmed.

Functions

See Functions

Lighting

See Lighting

Wiper functions

See Wiper functions