Type H: Negative (-) Multiplex - Clifford IntelliGuard 850 Installation Manual

H2/1
#30
#87
H2/2
#87A
ON-BOARD
LOCK
RELAY
H2/3
H2/4
#30
#87
H2/5
#87A
ON-BOARD
LOCK
RELAY
H2/6
DIA-629

type H: negative (-) multiplex

single-resistor type
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.
two-resistor type
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.
determining the proper resistor values
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.
I I M M P P O O R R T T A A N N T T ! ! 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
© 2004 directed electronics, inc.
WHITE/BLACK
NOT USED
GREEN/BLACK
LOCK #30 COMMON (OUTPUT)
VIOLET/BLACK
LOCK #87 NORMALLY OPEN (INPUT)
BROWN/BLACK
NOT USED
BLUE/BLACK
UNLOCK #30 COMMON (OUTPUT)
VIOLET
UNLOCK #87 NORMALLY OPEN (INPUT)
DOOR LOCK SWITCH/
KEY CYLINDER
(+)12V
CONSTANT FUSED
LOCK
LOCK RESISTOR
(IF REQUIRED)
VEHICLE FUSED
+12 VOLT CONSTANT
15A
UNLOCK RESISTOR
(IF REQUIRED)
BCM
UNLOCK
19