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Crank no start after installing jumper cables backwards

Tiny
MFERGUSON1
  • MEMBER
  • 2001 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 120,000 MILES
Hey guys, my vehicle won't start. To give some background, I was out of town and my wife needed to move my vehicle. The battery was dead so she jumped it. The problem is she hooked the jumper cables on backwards on my battery since then it will turn over just not start. I need to check the fuses any ideas I would greatly appreciate it.
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Monday, November 3rd, 2008 AT 11:51 AM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

You need to check the power distribution box next to the battery. It is where the positive battery cable goes into. Many times on a reverse polarity attempted jump start, it damages the box.
You will have to test the individual relays and fuses to see what needs to be replaced.

Here are few helpful articles:

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

https://www.2carpros.com/articles/how-to-use-a-voltmeter
https://www.2carpros.com/articles/how-to-check-wiring

I have attached the power distribution box location diagram as well as wiring for the starting system.
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Friday, July 30th, 2021 AT 11:25 PM

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