26
© 2 0 0 3 d i r e c t e d e l e c t r o n i c s , i n c .
type G: positive (+) multiplex
This 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.
SSIIN
NG
GL
LE
E--R
RE
ESSIISST
TO
OR
R T
TY
YP
PE
E:: If one resistor is used in the door
lock switch/key cylinder, the wire will pulse (+)12V in one direc-
tion and less than (+)12V when operated in the opposite direc-
tion.
T
TW
WO
O--R
RE
ESSIISST
TO
OR
R T
TY
YP
PE
E:: If two resistors are used in the factory
door lock switch/key cylinder, the switch/key cylinder will read
less than (+)12V in both directions.
D
DE
ET
TE
ER
RM
MIIN
NIIN
NG
G T
TH
HE
E P
PR
RO
OP
PE
ER
R R
RE
ESSIISST
TO
OR
R V
VA
AL
LU
UE
ESS:: 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.
IMPORTANT:
To ensure an accurate resistance reading, do not touch
the resistor or leads during testing.
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 constant (+)12V source.
Some good constant (+)12V references are the power input
source to the door lock switch/key cylinder, the ignition switch
power wire, or the (+) terminal of the battery.
Summary of Contents for 110D
Page 1: ...1 11 10 0D D O Ow wn ne er r s s I In ns st ta alllla at tiio on n G Gu uiid de e ...
Page 21: ...18 2003 directed electronics inc type A positive triggered relay driven system ...
Page 51: ...48 2003 directed electronics inc ...
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