556U Immobilizer Interface
Product Description
interface module is used when installing remote start products in vehicles equipped with based immobilizer system. This type of system uses a small chip imbedded in the ignitransponder, to transmit a very low powered RF signal. This signal is picked up through an the ignition switch which is then sent to the immobilizer’s transceiver. Once the correct immobilizer will enable the ignition and/or fuel systems. If an attempt is made to start transceiver does not receive a valid code, the ignition and sometimes the fuel systems are system will then render the remote start useless. The 556U bypasses the immobilizer remote start is in use, maintaining the factory system’s integrity. When the remote start
factory immobilizer remains fully functional.
put: Connect this wire to a fused source of constant 12V.
put: Connect this wire to the remote start negative (-) status output.
Input: Connect this wire to the vehicle’s true ignition output. (Refer to Latching Input, page 7.)
Ground Input: Connect this wire to the vehicle’s chassis ground.
se Input: Connect this wire to the vehicle’s positive keysense output wire. (Refer to Key Sense
e Input: Connect this wire to the vehicle’s negative keysense output wire. (Refer to Key Sense
RED Wires: Both of these are antenna ring wires.
to alternate wiring diagram.
© 2004 Directed Electronics, Inc. |
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Immobilizer Interface Instructions
in the Standard Immobilizer Interface section describe an immobilizer
of vehicles; however, some vehicle immobilizer systems may require an
issues, cosmetic differences, or RF loss when coupling the factory key RF
ring. (See Alternate Immobilizer Interface.)
the installation inform the customer that one of the vehicle’s installation and installed permanently in the unit. If a new key dealer, make sure to code the new key to the factory immobi-
. In many vehicles, the new key must be coded at the dealer.
installer's responsibility to notify customers of the following: If they programmed to the vehicle's immobilizer system in the future, require that all programmed keys be reprogrammed at the time the system are programmed. In this case, it would be necessary to key from the 556U module to reprogram it. (If the customer programmed to the vehicle in the future, the shaft of the key
© 2004 Directed Electronics, Inc. |
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Standard Immobilizer Interface
1.Open the control module and place the vehicle’s coded key through the center of the black receiver ring as shown.
2.Reassemble the control module. This will secure the key inside.
IMPORTANT! When using the ring method of installing the 556U, the ring from the 556U MUST be in front of the factory receiver ring. It CAN NOT be on top of, or behind the factory receiver ring. See illustration below.
3.Disassemble the steering column shroud and place the antenna ring around the vehicle’s ignition switch as shown, and plug into the control module.
4.Plug the 6-pin power plug into the control module.
5.Connect the BLACK wire to chassis (ground).
6.Connect the red wire to a fused source of constant 12V.
7.Connect the blue wire to the status output (blue wire) of the remote start system that provides a latched negative (-) ground while the remote start is active.
8.Test unit before reassembling the steering column.
9.Reassemble the steering column shroud.
© 2004 Directed Electronics, Inc. |
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