Mechanics

REAR WIPER RUNNING NON-STOP WHEN IGNITION IS ON.

1994 Dodge 600 • 6 cylinder FWD Automatic • 137,321 miles

1994 dodge caravan 3.0 base. Rear wiper continues to run non-stop, no intermittent, when ignition is turn on, and it only stops when ignition is turn off or connection to the rear wiper motor is disconnect.

The rear switch on the dash seeme fine, the defrost led, push on/off button led on the switch comes on when engaged, as well as rear window washer shoots water when pushed. Except the push on/off button has no effect on the rear wiper running.

I installed remanufactured one from Chrysler, but same issue--running non-stop when ignition is turn on.

How to fix this? Thanks. Felix.
Avatar
Karnsem
June 3, 2011.



Maybe faulty wiper module. Check for voltage on Dark Blue/Red wire at module if voltage then switch bad. If none check voltage atBrown/Light Green if voltage module bad

Docfixit
Jun 3, 2011.
Thanks, where exactly is the module?

Tiny
Karnsem
Jun 3, 2011.
Helloooo, anybody home. It was checked by a mechanic, he said all his test shows wires leading to switch and rear wiper motor are good.
He suspect the dash switch.
First he suspected the motor until I told him the original motor as well as the remanufactured one from Mopar I installed both run non-stop.

When he bangs the liftgate several times with force, sometimes the wiper stops, he's saying the switch probably is stuck.I don't know but I've ordered switch from ebay and the dealer. Your help is apprecited. Thanks.

Tiny
Karnsem
Jun 5, 2011.
Module is next to motor switch signals module and then module powers motor. Banging on lift gate indicates possible module or contacts.

Docfixit
Jun 6, 2011.
Where is the rear wiper getting power from if the switch is disconnected from the dash?

I've replaced the rear wiper motor with remanufactured one from Auto Zone. However, when ignition is on, motor still continue to run non-stop at first.I then suspected a faulty switch, So I disconnected the wiring harness behind the switch, the wiper stopped running but I can still here clicking noise intermitently every five seconds or so coming from the motor even though the blade or nothing is moving outside the motor except clicking intermmitently every five seconds inside the motor when ignition is on.

This is after completely disconnected the rear wiper switch from its wiring harness on the dash. Where is the rear wiper getting power from if the switch is disconnected and ignition is on?

I then re-installed the original rear wiper ( the default one) this time to see how it'll react while the switch is disconnected and ignition is turn on, unfortunately it continued to run non-stop. Anothe source of power feeding the rear wiper motor from where ecactly?

Tiny
Karnsem
Jun 8, 2011.
Fuse 13 in I/P box that powers module

Docfixit
Jun 8, 2011.
Yes, fuse #13 =rear wiper, washer, airbag, so I now know where rear wiper is getting power from, now how do I solve the non-stop running issue? A new switch from the dealer is on its way, though I do not think the switch is the issue simply because its still running non-stop when the switch is disconnected.I've gone thru 2 wiper motors including the original one on the van with same issue= runing non-stop. Any ideas?

Tiny
Karnsem
Jun 8, 2011.
Like I have stated three times MODULE

Docfixit
Jun 8, 2011.
Docfixit, I do not see anthing next to the wiper motor. The wiper motor is bolted onto a plate

As you can see, I have excact same part if there a module next to the motor, it's not on the plate or next to it, unless you're referring to the van motor/engine?

The whole rear wiper unit is bolted onto this plate, I do not see any module anywhere around. Could you please be specific as to the module's location? Thanks.

New switch from mopar arrived, installed but did not solved anything.
If only I can find and replace this module you are referring.

Tiny
Karnsem
Jun 8, 2011.
Docfixit, I think I'm able to find the rear wiper mudule, thanks to Mitchelleone Electrical component locator: Rear Intermitent wiper module-In liftgate behind trim panel at right end.

This one is far from the wiper motor, it's located at right corner of liftgate.
I saw it before but wasn't sure what it was, please confirm if this is it so I can place an order for it. Thanks.

Tiny
Karnsem
Jun 8, 2011.
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