SOLVED No power to washer pump

[Capsalot1]

BTW, how do I let everyone know how to solve a very strange instrument cluster issue I fixed the other day?

 

[Capsalot1]

Welcome to the Forum from NH.

Lots of knowledgeable folks here who freely share their knowledge, experiences, and perspectives. Knowledge is power.

I hope that you will become a participating member in the Forum's discussions.

Pics of the truck, please.

It appears that you tested the pumps by connecting them directly to the battery 12 volt source. I am assuming that you disconnected the pumps' electrical connectors on the pumps' electrical connector pigtails. While you had the connectors apart, did you check the other end of the connectors to confirm that you are getting 12 volts to those connectors, when the pump switches are activated?

I’m on board to participate, where would you like the pictures to post?

 

[Capsalot1]

Not sure if your underhood fusebox is the same as mine, but have you checked/swapped the relay there?

View attachment 348712

Ah, got it, the windshield wipers are working and that fuse is good but no power to motors. Could that relay still be bad?

 

[OR VietVet]

I’m sorry but I’m not sure how to see what Fless said or what was circled, I’m missing something

Scroll back to post #4.

 

[Fless]

If yours is like mine, the wiper fuse is in the instrument panel fusebox, inside the cab. The washer fuse and relay I pointed out are in the underhood fusebox/power center.

 

[Capsalot1]

If yours is like mine, the wiper fuse is in the instrument panel fusebox, inside the cab. The washer fuse and relay I pointed out are in the underhood fusebox/power center.

Roger that, thank you sir, I’ll take a look at that relay

 

[Capsalot1]

Roger that, thank you sir, I’ll take a look at that relay

 

[Capsalot1]

This is mine

 

[Fless]

So check this one in the underhood fusebox:




And this one (#12) in the in-cab center of dash fuse center:

 

[Capsalot1]

So check this one in the underhood fusebox:

View attachment 348860


And this one (#12) in the in-cab center of dash fuse center:

View attachment 348861

Those have been checked and are good, the wipers work when both switches are activated but the pumps aren’t getting power