Lock
Unlock
+12V
Door lock switch
key cylinder
Orange
White
Yellow
Orange/black
White/black
Yellow/black
NC
COM
NO
NC
COM
NO
(Lock signal)
(Unlock signal)
Lock
Unlock
Drivers door
EC002 output
central car lock control unit
BCM
+
12V (vehicle fused co12V)
+
12V (vehicle fused co12V)
not used
(insulate separately)
not used
(insulate separately)
Lock resistor
(if required)
Unlock resistor
(if required)
Type H: Negative (-) multiplex. Same as Type G system, but uses (-) pulse instead.
Single wire negative central locking
Single wire, negative lock, negative unlock.
Two potential (resistor may require) negative trigger.
Single-resistor style: 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 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 multi-meter 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 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 multi-
meter displays zero resistance in one direction, no resistor is need for that direction.
4.Once the resistor value(s) is determined, refer to the wring diagram for proper wiring.
EC002 output
central car lock control unit
Lock
Unlock
Door lock switch
key cylinder
Orange
White
Yellow
Orange/black
White/black
Yellow/black
NC
COM
NO
NC
COM
NO
(Lock signal)
(Unlock signal)
Lock
Unlock
Drivers door
BCM
not used
(insulate separately)
not used
(insulate separately)
Lock resistor
(if required)
Unlock resistor
(if required)
Chassis Ground
Chassis Ground
-30-
©
EASYGUARD
Electronics
.
All
right reserved.
-29-
©
EASYGUARD
Electronics
.
All
right reserved.
