Hydreon Rain Tracker RT-50A Troubleshooting Procedure

Rain Tracker RT-50A Troubleshooting Procedure
Motor Switching Applications
This procedure is for Rain Tracker installations that apply current directly to the wiper motor. For example, HSS (Hot Side
Switching) and GSS (Ground Side Switching) applications. If the installation required external resistors, see the "External
Component Applications" procedure.

Notes on wiring

•
Did you get the instructions from our website at www.raintracker.com? If you did not, check that first.
•
If you did and its not operating properly, go through the procedure.
•
If you checked and the instructions did not include your vehicle, a few notes:
◦ You can test for wire function and use the instructions included in the kit
◦ Sometimes, previous years are the same as current years. Check for this.
◦ Access to the vehicle wiring diagram is always very helpful. Try to obtain a wiring diagram for your vehicle.
Following this procedure will save you time.

1. Check that the Rain Tracker is getting power and ground

Use a multi-meter or test lamp. Unplug the Rain Tracker interface (J1) so you can put the test probes into the connector.
Symptom
12 V Present?
No 12V

2. Check how the system behaves in each of the manual modes.

With the Rain Tracker activation switch off:
Symptom
Manual off, slow, and
fast and wash work as
before
Manual slow does not
work
Wipers run all the time
Fast speed is slower than
it should be
Fast does not work
Wash does not work
Rain Tracker RT-50A Troubleshooting Procedure: Motor-switching Applications
www.raintracker.com
Check
Go to step 2
If possible, check the ground with a multi-meter. There should be no more than a couple ohms
from the Rain Tracker ground (black wire) to a good chassis ground. (Such as the connection on
the outside metal sleeve of the cigarette lighter.)
Check
Go to step 3
Check the connections to the SLOW relay, both the motor and the switch side. (PPL and BLU
on the Rain Tracker.)
If the system is responding to water but manual slow is not working, then the problem is
probably the SNC connection. (PPL wire from the Rain Tracker.)
Could be a damaged Rain Tracker interface module. See "Bypassing the Rain Tracker" on the
next page.
There is some wiring error that is shorting the wiper motor slow and fast windings together. For
example, the power diode (YEL & WHT) from the Rain Tracker is not wired in place. Be sure
to correct this as it wears the wiper motor out.
Did you cut the FAST wire, rather than Tee into it?
The Rain Tracker does not control wash. Did you cut a wire you should not have?
Page 1 of 6 Last Revised: 08/02/12