no wipers, washers

Reply Subscribe

Thread Tools

Search this Thread

Dec 12, 2011 | 04:39 PM

artieb

Thread Starter

Mountain Pass

Joined: Dec 2011

Posts: 104

Likes: 0

no wipers, washers

Hi, I got a 2001 F350 PSD and I don't have any B+ at my 5 pin motor connector. I have searched, and searched on this and other forums with no luck. My dash #33 30a fuse is good? Where and when should I get B+ at my wiper motor's connector? key on? I have no relays do anything at any point of my stalk's operation and/or "jiggling" Appreciate some advice, Artie

Dec 12, 2011 | 07:24 PM

artieb

Thread Starter

Mountain Pass

Joined: Dec 2011

Posts: 104

Likes: 0

I'd like to add some more info. on my underhood power dist. on relays 34 park / run and 35 high / low I do not have any B+ anywhere. Relay 33 washer pump I have B+ on term #3 no where else.... what years do I have in common with my 2001 F350? What is a good manual to get?? Which ones to stay away from? Thanks for some input, Artie

Dec 13, 2011 | 02:25 AM

carltonwebb

Cargo Master

Joined: Oct 2010

Posts: 2,089

Likes: 16

Power to that circuit starts at maxi fuse 21 under hood. It is 50 amps. That fuse feeds half the free world. Ignition switch, vacuum pump shift interlock if auto, & radio are just some of the things on it. If those work, then it is good.

Fuse 21 also feeds the ignition switch. There are 2 yellow wires there that should get power all the time.

The fuse 21 circuit leaves the ignition switch on term A1 (blk with lt green stripe) to fuse box inside to power the wiper circuit and fuel tank selector if u have and radio circuit.

Fuse 11 cab inside provides power to wipers. It provides B+ to wiper run relay term 1 & 5 , term 1 of pump relay, Term 1 of high low relay & to pin 4 (bk/lg wire) of wiper motor connector.

Relay 33 term # 3 that u have power on gets that power from Fuse 2 under the hood.

Dec 13, 2011 | 07:20 AM

artieb

Thread Starter

Mountain Pass

Joined: Dec 2011

Posts: 104

Likes: 0

Carltonwebb, I can't thank you enough! No wonder there's so many wiper horror stories. Ford is running a 30a wiper circut through an ignition switch, fuse panel, bulkhead connector and a "Y" splice somewhere, TOO MUCH! IMHO.
I'm going to either find a switched B+ in my underhood power panel or run a relay control wire from the cab and wire in a 40a Bosch relay with a 30a cir brkr for the positive side of the motor, wiper run relay, pump relay, and high / low relay. Keep the wiper circut all under the hood, AND reduce the load on the ignition switch.
I don't think I want to disturb the factory's seal on the firewall connector, as we have moisure problems getting our GEM wet, since this connector is lower than the wires and water runs downhill, thru the bulkhead and into our interor electronics.
So, part of the GEMs functions is to take the control fron the wiper stalk and throw out B- battery on the relays?
IF I have no other electical issues, so I should be ok. Does this relay idea make sense???

Dec 14, 2011 | 01:13 AM

carltonwebb

Cargo Master

Joined: Oct 2010

Posts: 2,089

Likes: 16

Was fuse 11 in the cab getting power? I left out the couple of connectors and splices but can help u narrow down the original circuit if u want.

The relay idea works but it is up to you and your knowledge of circuits in general. It could be just that u have a bad connection somewhere.

The gem does supply the ground side of the circuit via stalk. A better way of saying it is that the stalk (multi function switch=MFS) sends power to the GEM. The GEM then grounds the relays based on that info. I tried to include how to test MFS but computer and I are having a disagreement

If u need more, holler back. I am a late night person so its usually early am when i am online.

Dec 14, 2011 | 04:31 AM

artieb

Thread Starter

Mountain Pass

Joined: Dec 2011

Posts: 104

Likes: 0

Thanks Carltonwebb, I rang the circut from the motor connector to the bulkhead connector. When I was surprised to see 30a circut on such a small bulkhead pin, I decided to cut it loose there and go the with the relay , and control the relay with switched power. The wipers work! What else does the Generic Electronic Module control?

Dec 15, 2011 | 01:18 AM

carltonwebb

Cargo Master

Joined: Oct 2010

Posts: 2,089

Likes: 16

LOL...its almost what does it not have a hand in. Did i understand u to say that your gem took on water? For future reference if u have to replace it, u have to have that programmed to your truck configuration.

The GEM controls a variety of systems:

4-wheel drive functions
front and rear wiper/washer
warning chimes
keyless entry
interior and exterior lamps
power windows
brake warning
door ajar
seat belt switch
headlamp hi/lo
interior lamp
horn ground for relay
park brake applied light

The ignition switch position is very important to the GEM function. Often times, erratic or unexpected GEM function can be traced to problems with these GEM inputs.