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© 2006 Directed Electronics
TTWWOO--RREESSIISSTTOORR TTYYPPEE::
If two resistors are used in the factory
door lock switch/key cylinder, the door lock switch/key cylinder
will read resistance to ground in both directions.
DDEETTEERRMMIINNIINNGG TTHHEE PPRROOPPEERR RREESSIISSTTOORR VVAALLUUEESS::
To
determine the resistor values, the door lock switch/key cylinder
must be isolated from the factory door lock system. For testing, use
a calibrated digital multimeter that is set to ohms.
1. Cut the output wire from the door lock switch/key cylinder in half.
2. Test with the meter from the switch side of the cut door lock
switch/key cylinder wire to a reliable ground source. Some good
ground references are the ground input source to the door lock
switch/key cylinder or the battery ground.
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.
note: Please refer to the Door Locking Systems document
on
wwwwww..ddeessiiggnntteecchh--iinnttll..ccoomm
(On-Line Tech Support,
Tech Tips) for complete resistor test procedure and addi-
tional information for multiplexed door locks.
note: To ensure an accurate resistance reading, do not
touch the resistor or leads during testing.
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