Ready Remote 24927 - Manual (Page 36)

33 © 2 0 0 6 D i r e c t e d E l e c t r o n i c s
S tep 6, 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
20402, 29402 or 556L immobilizer bypass modules available at
your local authorized retailer or at www.directedstore.com. The
majority of transponder-based immobilizer systems can be
bypassed using the 20402, 29402 or 556U immobilizer bypass
module available at your local authorized retailer.
The WHITE/BLACK wire of the 6-pin harness supplies a 400mA (-)
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 which bypass module your vehicle requires, use the
website Interface Module Look-Up tool at www.readyremote.com.
note! Any vehicle equipped with a factory immobi-
lizer 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 sys-
tem.