User's Manual
Preco Electronics, Inc.
415 N. Maple Grove, Boise, ID 83704 (800) 453-1141 Copyright 2002 Page 7 of 10
370-871-1B
If for some reason the system is malfunctioning, all of the yellow LED’s will be flashing and the
buzzer will be sounding. Refer to the Error Indications and Troubleshooting sections below to
determine the error and solution.
Once the system has been installed, the detection zone should be tested. Testing is
accomplished by using two individuals. One individual is engages the parking brake and
places the vehicle in reverse. The other individual then walks through the detection zone
noting where the display buzzer or the back up alarm activates. By moving about the rear of
the vehicle and noting when the display or back up alarm activate, an accurate detection zone
can be mapped.