Q45 Electrical Problems. Help!

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Qlicious
Posts: 16
Joined: Wed Nov 17, 2004 12:52 pm
Car: 1994 Infiniti Q45, 18" M45 Chrome

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Anyone familiar with the 94 Q LAN system??I'm having problems with the right side of the car. The passengers seat, window, and lock won't work. Also the rear right passengers window doesn't work, but the lock works. The dealer diagnosed a faulty BCM(body control module). I purchased not 1, but 2 BCM's, and the BCM is not the problem. So much for the dealer being helpful. I did my own diagnostic and it reported as follows:

LCU 02-A(Data Line A: No Response)LCU 02-A(Data Line B: No Response)LCU 02-B(Data Line A: No Response)LCU 02-B(Data Line B: No Response)LCU 03 (Data Line A: No Response)LCU 03 (Data Line B: No Response)LCU 04 (Data Line A: No Response)LCU 04 (Data Line B: No Response)

I've checked all the fuses. When I performed the tone diagnostic, the center console switches gave a tone(meaning they work), but all the switches on both doors on the right side, did not give a tone. I've checked the wiring as best as I could for any broken wires or connections and have not found any. If anyone has any insight or ideas please share. This one's joggin' my noggin'.Thanks.

P.S. What happened to taking your car to the dealer as a last resort? I'm losing my faith in them.


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JT_MONEY_2004
Posts: 409
Joined: Wed Jun 30, 2004 12:14 pm
Car: 1990 Q45, Pearl

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Does the telescoping feature work?

Qlicious
Posts: 16
Joined: Wed Nov 17, 2004 12:52 pm
Car: 1994 Infiniti Q45, 18" M45 Chrome

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Yes.Everything on the drivers side works. It almost seems as if there was a break in the line or a bad relay between the center console and the passenger door.

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elwesso
Posts: 30810
Joined: Sun Feb 23, 2003 4:52 pm
Car: 94 Infiniti Q45t 5 spd
2007 BMW M Coupe
2007 Infiniti G35 S 6MT
Location: Indiana
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I wonder if the 2 little computers on the pass side are bad.. There are 2 little computers that control all that stuff.....

Qlicious
Posts: 16
Joined: Wed Nov 17, 2004 12:52 pm
Car: 1994 Infiniti Q45, 18" M45 Chrome

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Which computers are you talking about?


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