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© 2006 Directed Electronics
power wire, or the (+) terminal of the battery.
3. Operate the door lock switch/key cylinder in both directions to
determine the resistor values. If the multimeter displays zero resis-
tance in one direction, no resistor is needed for that direction.
4. Once the resistor value(s) is determined, refer to the wiring dia-
gram for proper wiring.
type H: negative (-) multiplex
The system is most commonly found in Ford, Mazda, Chrysler
and GM vehicles. The door lock switch or door key cylinder
may contain either one or two resistors.
SSIINNGGLLEE--RREESSIISSTTOORR TTYYPPEE::
If one resistor is used in the door lock
switch/key cylinder, the wire will pulse ground in one direction and
resistance to ground when operated in the opposite direction.
