Rear defroster switch

ANGIEMERES

MEMBER
1997 JEEP CHEROKEE
124,000 MILES

Rear defroster switch on but not working. Problem is that turning it on made the dash lights go out. Still working odometer light. Still working headlights and inside overhead light. Light on switch still on. Tried for dash lights with vehicle running and not running.

Wednesday, December 27th, 2017 AT 6:48 AM

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
51,986 POSTS

Hello,

Check fuse #3 which is a 40 amp this supplies power to the systems.

Here is a guide to help you:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Here is a wiring diagram so you can see how the system works and the fuse panel and relay diagrams as well:

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Check out the diagrams (below).

Please let us know what you find. We are interested to see what it is.

Cheers, Ken

Images (Click to make bigger)

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Thursday, December 28th, 2017 AT 1:29 PM

ANGIEMERES

MEMBER
2 POSTS

Thank you for going the extra mile with diagrams. Unfortunately, were are not able to find a fuse marked #3 nor any fuse that seems to be related to the defroster.

Thank you for your time.

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Friday, December 29th, 2017 AT 12:42 PM

KEN L

MASTER CERTIFIED MECHANIC
51,986 POSTS

Can you take a picture of your fuse box so we can see which configuration we are dealing with. Please use your phone and upload here to the site so we can see what's going on.

Cheers, Ken

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Sunday, December 31st, 2017 AT 11:34 AM

ANGIEMERES

MEMBER
2 POSTS

Wanted to let u know we gve up trying to figure out the fuses and took to the shop. $45 to replace fuse. He said he used a testerto find fuse as Jeep is not very user friendly on fuse diagram. Thank you for your time.

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Wednesday, January 10th, 2018 AT 10:28 PM

KEN L