User manual DEI 556U

[. . . ] Once the correct signal is received, the immobilizer will enable the ignition and/or fuel systems. If an attempt is made to start the vehicle and the transceiver does not receive a valid code, the ignition and sometimes the fuel systems are disabled. The 556U bypasses the immobilizer system only while the remote start is in use, maintaining the factory system's integrity. When the remote start system is not in use the factory immobilizer remains fully functional. 6-Pin Harness RED (+) 12 Volt Input: Connect this wire to a fused source of constant 12V. [. . . ] Disassemble the steering column shroud and place the antenna ring around the vehicle's ignition switch as shown, and plug into the control module. 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. Reassemble the steering column shroud. © 2004 Directed Electronics, Inc. 3 N556U 09/04 INCORRECT CORRECT © 2000 Directed Electronics, Inc. 4 N556U 5/00 Alternate Immobilizer Interface No. 1 This type of interface will only work with immobilizer systems that have a two-wire factory antenna harness. This alternate interface method is not guaranteed to work with all immobilizer systems, due to differences in transponder systems. It is meant to provide the installer with an alternative interface method for most two-wire transponder ring systems. Open the control module and place the vehicle's coded key through the center of the black receiver ring as shown. Disassemble the steering column shroud and locate the factory transponder ring's antenna wires. The two wires are usually located in a tube routing from the transponder ring to the factory transceiver module. NOTE: Some vehicles may require other methods to access the factory transponder ring antenna wires. © 2004 Directed Electronics, Inc. 5 N556U 09/04 4. Plug the three-pin connector into the 556U module and cut the 556U's antenna wire off. Split open the factory transponder ring tube and cut one of the two wires in half. Connect the factory transponder ring side of the cut wire to the BLACK/WHITE normally closed input wire of the 556U. Connect the factory transceiver module side of the cut wire to the 556U's BLACK wire. Connect the BLACK/RED wire to the uncut factory transponder ring antenna wire. 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. Reassemble the steering column shroud. © 2004 Directed Electronics, Inc. 6 N556U 09/04 Alternate Immobilizer Interface No. 2 This type of interface will only work with immobilizer systems that have a two-wire factory antenna harness. This alternate interface method is not guaranteed to work with all immobilizer systems, due to differences in transponder systems. It is meant to provide the installer with an alternative interface method for most two-wire transponder ring systems. Open the control module and place the vehicle's coded key through the center of the black receiver ring as shown. [. . . ] These vehicles require the key sense wire to be located in the vehicle. This wire will show either ground (-) or positive (+) voltage when the key is slid in the ignition and the key chime sounds. Depending on the polarity of the vehicle attach either the GREEN (-) or the VIOLET (+) wire from the 556U to the key sense wire in the vehicle. When the 556U senses an input on these wires it will drop out immediately allowing the vehicle to only see the key that was just placed in the ignition cylinder. Latching Input Some vehicles require that the key code does not change during a run cycle (Mercedes ML series). [. . . ]