BOA 165B Installation Manual page 31

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step 8
Immobilizer Bypass Modules
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.
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/556U immobilizer bypass
module available at your local retail dealer.
note: This unit requires you to use one of your factory keys.
You may want to acquire another key from the 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.
To determine what bypass module your vehicle requires, use the
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© 2005 Directed Electronics, Inc.