I can hear a relay click in
the interface module, but
the wipers do not run
Check the wiring around the SNO terminal, and the power diode (GRN, WHT, YEL wires from
the Rain Tracker.)
Check for this especially common problem: the Switch and Motor side connections to the Rain
Tracker are reversed. The PPL wire from the Rain Tracker should go to the switch side of the
break you made in the SLOW wire. The BLU wire from the Rain Tracker should go to the motor
side.
Check for proper wire gauge. For all of these sorts of application (motor-switching applications)
the connections are fairly heavy gauge wire-18 AWG or thicker- in the vehicle. If you have
connected the Rain Tracker to any thin wires in the vehicle, you probably have connected to a
wrong wire.
Could you have connected to some wire other than SLOW?
•
For Hot-Side Switching systems: check that the SLOW wire goes to +12V for manual slow
mode, ground for off mode.
•
For Ground-Side Switching systems: check that the SLOW wire goes to 0 for manual slow
mode, +12V for off mode.
I hear a short buzzing
The connection to the slow has likely been switched. Make sure you have the PPL wire from the
Rain Tracker going to the switch side of the vehicle slow wire and the BLU is going to the motor
side.
Wipers stop on the middle
of the windshield
or
I when I spray water the
wipers “step” to make a
complete wipe.
Some vehicles have digital systems that do not run the wipers direct from the switch. The wires
run through the computer first. When the wipers are operated with the Rain Tracker, the computer
does not know to run the wipers home. To fix the problem, tie the Rain Tracker CAM wire to the
CAM wire at the wiper motor. This will allow the system to run the wipers back home.
Check the SNC connection (PPL wire from the Rain Tracker). Be sure it is going to the switch
side, not the motor side.
Some applications will do this if you try to run both the Rain Tracker and the intermittent mode
simultaneously. Keep the factory system off when running the Rain Tracker.
The wiper fuse just blew!
If you use the Hot Side Switching Diagram for a Ground Side Switching system, or the other way
around, you will be shorting power to ground, causing the fuse to blow or breaker to trip.
Rain Tracker RT-50A Troubleshooting Procedure: Motor-switching Applications
www.raintracker.com
Page 3 of 6
Last Revised: 08/02/12
