2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat - Jeep Garage - Jeep Forum

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  #1  
Old 10-21-2015, 12:11 PM
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2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Just bought a 2003 WJ with some problems.
-Dome lights don't come on at any time
-Security lights and horn do not come on when using the key fob to lock or unlock
-radio does not work( bought it with the radio pulled, previous owner stated it didn't work so he pulled it before sale)
-A/C and heat does not work. AZC screen does not come on but the knobs and reset if heater control lights up just nothing turns on. The rear defrost seems to engage but does not light up to indicate it is on but I can hear it power on when button is pushed.

Any ideas as to what is causing this or where I can start looking would be greatly appreciated!!

Thanks in advance!

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  #2  
Old 10-21-2015, 01:18 PM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Welcome to the garage. I would start checking fuse 7 on the junction block under the steering wheel.
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Old 10-21-2015, 08:58 PM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Checked fuse #7 and it looks fine
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Old 10-22-2015, 06:21 AM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Than have a look at fuse #5 in the PDC under the hood.
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Old 10-22-2015, 08:17 PM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

#5 under the hood looks fine as well. Im beginning to think this may have been a bad buy. My last 01 wj didn't have any issues until it was totaled
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Old 10-22-2015, 08:21 PM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Did you check the ground wire in the boot between the door and the body? That would explain the dome lights and a few other things.
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Old 10-23-2015, 05:20 AM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

What your problem has in common, is that the BATT A148 wire is feeding them. (radio is fed, BCM is fed, AZC is fed, only not the AC compressor. But the compressor won´t come on, since the AZC head is dead).
When the BCM doesn´t work, also the dome lights won´t come on.
Eventhough the tip of checking the wires in the door boot is a good idea, i wonder if it would be the problem here. Normally when the black wire breaks, the dome lights will not go off, or you should have dimmed them completely on the left switch stalk.
I would remove fuse #5 from the PDC and measure the voltage on both sides of the fuse slots. One side should have battery power on it. If ok, i would do the same with fuse #7 on the junction block. Let me know if ok sofar.
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Old 10-23-2015, 06:04 PM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Thanks for the quick response guys,I really appreciate the time you've taken to help me out. Have been stuck working late so I will try the things you have suggested on my day off tomorrow and respond with the results. I did check the boot and the black wire is kinked pretty bad but not snapped. I'll take a pic of it tomorrow when testing. Thanks again!
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Old 10-23-2015, 06:12 PM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Also when checking the voltage, do I check voltage in the slot the fuse goes into? Im a complete noob at diagnosing electrical problems.
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Old 10-24-2015, 04:52 AM
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Re: 2003 WJ 4.7 no dome lights, security lights, radio, A/C or heat

Quote:
Originally Posted by wgilbert21 View Post
Also when checking the voltage, do I check voltage in the slot the fuse goes into? Im a complete noob at diagnosing electrical problems.
Yes, just check the voltage from each slot to ground. Without the fuse, only one side will have 12V.
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