Directed Electronics Valet 561T Guia de Instalação descarregar pdf (Página 9)

There are eight common types of door lock circuits (some vehicles use more unusual systems):

■

TTyyppee AA::

Three-wire (+) pulse controlling factory lock relays. Most GM, some Ford and Chrysler, 1995 Saturn,

some new VW, newer BMW.

■

TTyyppee BB::

Three-wire (-) pulse controlling factory lock relays. Most Asian vehicles, early Saturn, some BMW and

Porsche.

■

TTyyppee CC::

Direct-wired reversing-polarity switches. The switches are wired directly to the motors. This type of

system has no factory relays. Most Fords, many GM two-doors cars and trucks, many Chryslers.

■

TTyyppee DD::

Adding one or more aftermarket actuators. These include slave systems without an actuator in the

driver’s door, but with factory actuators in all the other doors. Type D also includes cars without power locks,

which will have actuators added. All Saabs before 1994, all Volvo except 850i, all Subaru, most Isuzu, and

many Mazdas. Some mid-eighties Nissans, pre-1985 Mercedes-Benz and Audi.

■

TTyyppee EE::

Electrically-activated vacuum systems. The vehicle must have a vacuum actuator in each door. Make

sure that locking the doors from the driver's or passenger side using the key activates all the actuators in

the vehicle. This requires a slight modification to the door lock harness. Mercedes-Benz and Audi 1985 and

newer.

■

TTyyppee FF::

One-wire system - cut to lock, ground to unlock. This system is found in late-model Nissan Sentras,

some Nissan 240SX, and Nissan 300ZX 1992 and later. It is also found in older Mitsubishis, and some early

Mazda MPV’s.

■

TTyyppee GG::

Positive (+) multiplex. This system is most commonly found in Ford, Mazda, Chrysler and GM vehi-

cles. The door lock switch or door key cylinder may contain either one or two resistors.

■

TTyyppee HH::

Negative (-) multiplex. The system is most commonly found in Ford, Mazda, Chrysler and GM vehi-

cles. The door lock switch or door key cylinder may contain either one or two resistors.

■ Three-wire switches will have either a constant ground input or a constant (+)12V input, along with the

pulsed lock and unlock outputs to the factory relays.

■ Many BMW’s and VW’s have no external switch. The switches are inside the actuator, and instead of pulsing,

the proper wires will flip-flop from (+)12V to (-) ground as the door locks are operated.

■ Direct-wired switches will have a (+)12V constant input and one or two (-) ground inputs, along with two

output leads going directly to the lock motors.

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