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Bypassing the Rain Tracker

If you are still having trouble with the system in manual modes, try this diagnostic:
Remove the Rain Tracker interface module.  Use a stiff wire to connect the BLU and GRN wires together at the Rain Tracker 
interface connector.  Connected this way, the wiper system should behave just as it did from the factory.  If it does not, there 
is some problem with the interface wiring.

3. Verify that the interface can make the wiper motor run—Pulse the Rain Tracker 
activation switch.

With the ignition on, turn on the activation switch for a few seconds.  Each time you do this, the wipers should run slow once.

Symptom

Check

Wipers run slow for 
one wipe when you 
pulse the switch

Go to step 4.

A simple test for wiring 
can eliminate problems 
quickly

This test is done with the Rain Tracker module unplugged from the interface connector (J1) and 
the vehicle on. 

For HSS applications:
Using a stiff wire as a jumper, on the Rain Tracker connector, connect YEL to BLU. Wired 
correctly, the wipers will run slow.

To check fast, connect YEL to PNK. Wired correctly, the wipers will run fast. 

Since the module is unplugged, the wipers will not run home. You can plug in the module to run 
the wipers back home. 

For GSS applications:
Using a stiff wire as a jumper, on the Rain Tracker connector, connect WHT to BLU. Wired 
correctly, the wipers will run slow.

To check fast, connect WHT to PNK. Wired correctly, the wipers will run fast. 

If you do not get the expected result, check the corresponding wires. Check the connection on 
the BLU wire. Also, check the connection on the YEL (WHT on GSS applications) which 
connects to the RED power wire (GND wire for GSS applications).

If you get the expected results, please proceed with the procedure.

I cannot hear a relay 
click inside the Rain 
Tracker interface module 
when I pulse the wiper 
switch

You probably have a problem with the power, ground, or activation switch.

Check to see that the activation switch is working: there should be about 12V at the activation 
switch / mode reader (GRY wire) coming into the Rain Tracker.

Rain Tracker RT-50A Troubleshooting Procedure: Motor-switching Applications
www.raintracker.com

Page 2 of 6

Last Revised: 08/02/12

Summary of Contents for Rain Tracker RT-50A

Page 1: ... 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 2 Check how the system behaves in each of the manual modes With the Rain Tracker activation switch off Symptom Check Manual off slow and fast and wash work as before Go to step 3 Manual slo...

Page 2: ...y the wipers will run slow To check fast connect YEL to PNK Wired correctly the wipers will run fast Since the module is unplugged the wipers will not run home You can plug in the module to run the wipers back home For GSS applications Using a stiff wire as a jumper on the Rain Tracker connector connect WHT to BLU Wired correctly the wipers will run slow To check fast connect WHT to PNK Wired corr...

Page 3: ... 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 fir...

Page 4: ... a good choice into the sensor cable and check with a multi meter Sensor responds barely at all Is the sensor mounted too far in the shade band From the mid 90 s on most US vehicles come with infrared absorbing shade bands The Rain Tracker sensor can be mounted on the edge but not deeply within the shade band Is the windshield an infrared reflective type These are very rare on some Chevy venture v...

Page 5: ...ose to the edge of the wipe pattern will make the system wipe too much No amount of water will make the system run fast Are you doing this in bright sunlight Note that the Rain Tracker will not run the wipers fast when in bright sunlight The Rain Tracker is intentionally less sensitive in very bright conditions which are often due to road spray This is to prevent smearing If possible have an assis...

Page 6: ... Wipers wipe when I drive over bumps Check to be sure that the sensor is securely snapped into the Rain Tracker coupler This can happen if the sensor cable has a long way to go to reach the headliner and is not secured Solution secure the sensor cable to the mirror mount base with a cable tie Wipers wipe when I tap the sensor Stop tapping the sensor Properly installed the sensor is immune to norma...

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