Technical Support

6 May 2005

Door lock and/or unlock does not work.

Symptom

The bypass kit is unable to lock and/or unlock the vehicle.

Cause

The connected remote-starter or alarm does not have a perfect ground on the lock/unlock signal. Some modules have short-circuit protection by using either an internal diode, transistor, or resistor which prevents the lock/unlock output pulse from having a ground that is at a low enough potential for the bypass kits' input to recognize.

Solution

Try grounding the bypass kits' lock/unlock input manually to chassis ground. If the locks function properly then relays will need to be added in series between the remote-starter or alarm to properly shape the modules output ground pulse(s). Also ensure that the remote-starter or alarm and the bypass kits' power and ground are taken from the same location to reduce any likelyhood of a differential voltage potential.

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