System Description Opel Vectra B

System Description

Bases

The multitimer unifies previous individual components and relays in a central electronics unit. This predominantly involves the gathering together of individual time lag relay delay functions in one module.

The multitimer is integrated in the fuse box (central electrical system) and is similar to a drawer which is inserted into the fuse box.

The multitimer is connected via a 38 pin plug (of which 8 are power contacts). Relays, which are controlled by the multitimer, directly contact the corresponding multitimer contacts with their relay coils via the fuse box. The relays power contacts only contact the fuse box (except for the 2 turn signal relays).

Function

The multitimer is fitted as standard and has the following functions:

Basic functions

• Turn signal control with hazard warning lamp function
• Dimmer
• Warning buzzer
• Windscreen wiper interval control
• Heated rear screen control
• Rear fog lamp control
• Interior lamp delay

Additional functions

• Fog lamp control
• Rear screen wiper interval control
• Heated outside mirrors

Turn Signal Lamp Control (With Hazard Warning Lamp)

Directional Signal:

with and without trailer.

Lamp Failure Control:

If a turn signal lamp fails, the signal frequency is doubled.

Hazard Warning Signal

Directional Signal Telltale:

The telltale flashes in synchronisation with the directional displays. If, e.g. a directional display is permanently displayed due to a relay contact �sticking�, the telltale is also permanently illuminated, even if the turn signal lamp switch is not actuated.

If flashing occurs on the non-defective side in the event of sticking, the telltale is permanently illuminated and the trailer telltale flashes. If flashing occurs on the defective side, the telltale is permanently illuminated.

Trailer Directional Turn Signal Lamp Telltale:

The trailer telltale is active if more than 3 directional displays (2 x 21 W + 1 x 5 W) are connected to one side. With the hazard warning function, and when the trailer is connected, the telltale flashes in synchronisation with the directional turn signal lamp telltales.

Hazard Warning Lamp Telltale (In Switch):

The telltale is active (permanent illumination) at ignition ON. When hazard warning lamp is ON, the telltale flashes in synchronisation with the turn signal lamps.

Atws Signal

If ATWS signal is active, the respective input of the multitimer is deprived of voltage. All signal lamps then follow the ATWS signal. ATWS signal has priority over hazard warning signal.

ATWS = Anti�theft warning system

Central Door Locking System Signal:

For functional control purposes, the signal lamps flash once on locking, theft�proofing and unlocking.

CDLS = Central door locking system

Instrument Dimmer

With the illumination dimmer, the instrument illumination can be altered when the parking lamp is switched on. The illumination level is adjusted via a potentiometer integrated in the central lamp switch.

This potentiometer signal serves as an input for the multitimer to alter the passenger compartment illumination.

Acoustic Warnings

Three similar warnings, lamp, parking lamp and key�in�warning (Japan only) differ as regards their frequency.

Lamp warning:

The lamp warning notifies the driver that the lamp is switched on on leaving the vehicle.

Function:

The buzzer sounds if the ignition is switched off and the parking lamp or low beam lamp is switched on when the door is open.

Parking lamp warning:

The parking lamp warning informs the driver that the parking lamp is switched on.

Function:

In order to recognise the position of the turn signal switch, the turn signal switch is switched to terminal 30. Via terminal 15 �ON/OFF�, the multitimer decides whether to activate the turn signal lamp or the parking lamp warning.

The buzzer sounds for approx. 2 seconds if the turn signal lamp switch has been actuated and the ignition is switched off when the door is open.

Key�in�warning:

The �key�in�warning� function (Japan only) notifies the driver that the ignition key is in the ignition lock. This is carried out via the warning buzzer.

Function:

The buzzer sounds if the ignition key is inserted and the door is opened when the ignition is switched off.

Acoustic Warnings

Warning sound table

Interior Lamp Delay

This function controls the passenger compartment illumination when the ignition is OFF. When the ignition is switched on, the interior lamp delay does not function.

Functions:

The interior illumination is faded in:

• on receipt of a valid release command at the multitimer �release central door locking system� input
• on opening a door.

The passenger compartment illumination is immediately switched off at ignition ON

The passenger compartment illumination is faded out:

• on receipt of a valid locking command at the multitimer �lock central door locking system� input, insofar as no door is open.
• after all doors have been closed, the passenger compartment illumination switch is not actuated and the big time out has expired.
• after the maximum time out has expired if the door is open or the passenger compartment illumination switch is actuated.

Interior Lamp Delay

Observations

• With ignition ON the passenger compartment illumination is switched on and off undimmed.
• The passenger compartment illumination is always switched on and off undimmed via the passenger compartment illumination switch (independent of whether ignition is ON/OFF).
• Interior lamp is not controlled with ignition ON and activation of central door locking system disengage/engage inputs (e.g. via manual actuation of interior locking buttons).
• The big time out is only activated after ignition has been switched OFF.

Windscreen and Rear Screen Wiper Interval Control, Windscreen and Rear Screen Washing

Windscreen and rear screen interval control

Both the rear screen intermittent wiper and the windscreen wiper are controlled via the odometer signal input via a speed�dependent electronic advance (see illustration) in interval mode.

• Number of wipe cycles/min.

Functions:

• Vehicle dependent control of windscreen and rear screen wipers.
• Synchronisation of windscreen and rear screen intermittent wiping (rear wiper is synchronised to front wiper).
• Windscreen and rear screen washing (priority over intermittent wiping).

Windscreen and Rear Screen Wiper Interval Control, Windscreen and Rear Screen Washing

Windscreen and rear screen washing functions

The windscreen washing function is active when the ignition is switched on and the windscreen washing tip switch is simultaneously actuated. The wiper speed corresponds to level 1. The wiping process commences immediately on actuation of the operating lever.

The rear screen washing function is active when the ignition is switched on and the rear screen washing tip switch is simultaneously actuated. The wiper speed corresponds to level 1. The wiping process commences with a delay of approx. 1 second.

If, while the windscreen and rear screen wipers are running in synchronisation, a washing process is carried out, the wipers are subsequently synchronised.

Heated Rear Screen and Heated Outside Mirror

The heated rear screen and heated outside mirror can only be switched on when the engine is running. If the battery voltage drops below 10.8 V for longer than 3 minutes, the rear screen heating is automatically switched off. It can only be switched on again with the operating switch when the battery voltage is greater than 12 V.

The heated rear screen/outside mirror are switched on/off via actuation of the switch via:

• Automatically on termination of each valid period of heating (approx. 15 minutes).
• Via actuation of the switch within the valid period of heating.
• When ignition is OFF

Fog Lamp and Rear Fog Lamp Control

Function:

• Control of rear fog lamps (one or two according to vehicle equipment). With trailer, one additional rear fog lamp.
• Control of both fog lamps.

The fog lamps can be switched on if

• Ignition is ON and
• Parking lamp is ON

The rear fog lamp can be switched on if

• Ignition is ON and
• Parking lamp is ON and
• Fog lamp is ON or low beam is ON.

The fog lamp and rear fog lamp are automatically switched off as soon as one of the above conditions is no longer fulfilled.

In addition to the descriptions in chapter 3 of this checking procedure, the � Vectra�B new technical features� brochure contains further information.