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Unread 11-05-2012, 07:00 PM   #1
HighOutputTj
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2000 TJ Wrangler 
 
Join Date: Jul 2011
Location: Plainfield, Illinois
Posts: 24
electrical nightmare

I need some serious help here. Im having an issue with my ignition, heat, and some other things. I'll try to describe as best as i can.

The first issue is my ignition, specifically starting my heep. The key will not start the engine and i had to wire in a push button to jump the terminals on the starter. I still need my chipped key in the ignition to start it however. I've replaced everything ignition wise that deals with starting short of the ecu and the actual key cylinder.

Second issue is my reverse lights and the rear wiper/defroster have stopped working. I replaced the park/neutral sensor and adjusted the contact plate in the trans and gone over almost all the wires and all the conections to the rear end.

Third problem is my hvac system. I replaced the blower motor with a brand new one, resister with a new one, control unit with a new one, and again i've gone over almost all the wiring and have gone over all the conectors.

I need some ideas on what to do and try next. Also i was wondering if all these issues could be some how connected. Could i have possibly fryed my ecu somehow and that could be causing all this electrical asshatery.

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Unread 11-05-2012, 07:36 PM   #2
gmiller0737
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1997 TJ Wrangler 
 
Join Date: Oct 2008
Location: Jacksonville,Fl
Posts: 768
1st Start with a proper wiring diagram for each system then either a Test Light or Volt Meter to diagnose the problems,The no start may be a problem the Neutral Safety Switch (Auto Transmission) Start There I know you said you replaced it but check a wiring diagram to see how the circiuts work and what value to expect at each wire during testing.
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Unread 11-05-2012, 07:40 PM   #3
HighOutputTj
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2000 TJ Wrangler 
 
Join Date: Jul 2011
Location: Plainfield, Illinois
Posts: 24
Quote:
Originally Posted by gmiller0737 View Post
1st Start with a proper wiring diagram for each system then either a Test Light or Volt Meter to diagnose the problems,The no start may be a problem the Neutral Safety Switch (Auto Transmission) Start There I know you said you replaced it but check a wiring diagram to see how the circiuts work and what value to expect at each wire during testing.
I do have quite a few diagrams. And so far i havn't been able to track down anything
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Unread 11-05-2012, 08:18 PM   #4
reisom
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2001 TJ Wrangler 
 
Join Date: Nov 2010
Location: Indiana
Posts: 163
I just hopefully fixed my electrical demon after 2 months of tracking. I would start in the PDC area (fuse box under hood). Check all relays and fuses there. Then make sure all relays are getting good connections into their proper terminals. This was my problem. Starter relay wasnt getting good contact when seated in the PDC. Youre prob gonna have to get wiring schematics for each problem and start from one end and work your way thru until you find the prob. Hopefully you might get some help from RUBI4MYMRS. He knows what hes talking about when it comes to ignition probs. Have some patience, its frustrating, but worth it in the end.
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Unread 11-05-2012, 10:36 PM   #5
Rubi4MyMrs
Tks 4 the upgrade MoodyJP
 
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2005 LJ Wrangler 
 
Join Date: Mar 2011
Location: Trails of, Nevada
Posts: 2,424
Check fuse #8 in the PDC in front of the battery. That supplied power to the starter relay & the ignition switch which with the key on powers fuses 5, 6, 7, & 8 in the fuse block behind the glove box.


Fuses:
5 is airbag
6 is rear wiper/washer
7 is back up lights & rear defrost
8 is HVAC blend door & blower relay control.


Pretty much everything you mention.
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