Preco Electronics, Inc. 415 N. Maple Grove, Boise, ID 83704 (800) 453-1141 Copyright 2003 Page 8 of 10
370-894-1B
COMMON INSTALLATION PROBLEMS AND TROUBLESHOOTING
Display power ON green LED is not illuminated.
Verify that DC power is applied to the sensor when the vehicle is in reverse (+12V to
red wire and ground to black wire).
Verify that the cable between the sensor and display is properly connected.
Display continuously flashes.
Check connection between display and sensor.
All the display LED’s are illuminated when sensor is mounted.
Verify the sensor is pointing outward from the vehicle in an open area with no
obstructions. This may require removing the mounting screws and lifting the sensor out
away from the rear of the vehicle. If the display LED’s are not active when moved away
from the vehicle, reposition the sensor to a new location that offers and unobstructed
view.
Back up alarm does not operate when connected to the PreView
tm
sensor.
Verify that the back up alarm positive is wired per the schematic provided in these user
instructions.
Disconnect all other back up alarm connections to the vehicle.
Sensor is detecting the ground, indicated by a few of the display LED’s being lit.
In an open field, either position the sensor to a higher mounting location or slightly angle
the sensor upward 2 to 5 degrees. The minimum recommended mounting height is 30
inches. Contact Preco for an angle bracket if one is required.
Cable between display and sensor is too short.
Contact Preco for an extension cable. This cable is placed between the sensor and
display cable and comes in 5’, 10’, 15’ and 25’ increments.
Detection pattern seems wider when a vehicle is detected rather than a person.
This is normal since a vehicle presents a larger radar cross section than a person.
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