Step 9 – Directed Electronics Ready Remote User Manual

Page 48

step 9

Immobilizer Bypass Modules

Most newer vehicles have a factory engine immobilizer system

designed to prevent any unauthorized use of the vehicle. These

immobilizers will cut off power to the starter and the fuel supply

preventing a thief from starting the vehicle.

There are several types of immobilizers, with the most common

being the resistance based passlock/passlock 2 systems found on

most newer GM vehicles. This system can be bypassed using the

555L immobilizer bypass module available at your local retail

dealer. The majority of transponder-based immobilizer systems

can be bypassed using the 555U or 556U immobilizer bypass

module available at your local retail dealer.

The BLUE wire (H1/1) of the primary harness supplies a

200mA output as soon as the control module begins the remote

start process. This wire can be used to activate an immobilizer

bypass unit.

note: This unit requires you to use one of your factory keys.
You may want to acquire another key from the dealer.

note: Any vehicle equipped with a factory immobilizer
must use an immobilizer bypass module to remote start.
If not used, the vehicle ignition or fuel supply circuits
could lock up and require a costly trip to the dealer to
reset the computer system.

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