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  #1  
Old 10-09-2009, 03:40 PM
RAugur33 RAugur33 is offline
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interior light issues....HELP

Not a single interior light works on my 92' SVX.

No overhead, maps, doors, floors or instrument panel, nada!

However, all other accessories work fine: mirrors, lapbelts, clock, stereo....


What can be the common factor be that effects all interior lighting?????
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  #2  
Old 10-09-2009, 04:05 PM
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Trevor Trevor is offline
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Re: interior light issues....HELP

Quote:
Originally Posted by RAugur33 View Post
Not a single interior light works on my 92' SVX.
No overhead, maps, doors, floors or instrument panel, nada!
However, all other accessories work fine: mirrors, lapbelts, clock, stereo....

What can be the common factor be that effects all interior lighting?????
Check the two ground connections under the passenger seat, on the raised section alongside of the ABS control unit, and fastened with a single screw.
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  #3  
Old 10-09-2009, 04:16 PM
trophy956 trophy956 is offline
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Re: interior light issues....HELP

hi ive seen this at my shop ,all of these run through the light timer ,connector b91 r/s a piller ,both times the plugs were loose ,very comman subaru problem ,b91 is a 20 pin black connector
you have to remove the glove box and lightly pull out on the dash to reach this
charlie
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  #4  
Old 10-09-2009, 08:23 PM
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redlightningsvx redlightningsvx is offline
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Re: interior light issues....HELP

Check the fuses.
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  #5  
Old 10-09-2009, 08:48 PM
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SoCal LS-L SoCal LS-L is offline
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Re: interior light issues....HELP

Quote:
Originally Posted by trophy956 View Post
hi ive seen this at my shop ,all of these run through the light timer ,connector b91 r/s a piller ,both times the plugs were loose ,very comman subaru problem ,b91 is a 20 pin black connector
you have to remove the glove box and lightly pull out on the dash to reach this
charlie
Even the instrument panel goes through the timer?

Check fuse #25 in the main box..... it supplies both the courtesy lights and the time control unit. Its the 4th blade fuse down on the left side, engine compartment box.
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  #6  
Old 10-12-2009, 10:30 AM
RAugur33 RAugur33 is offline
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Re: interior light issues....HELP

Thanks for the info, I will post my findings.
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  #7  
Old 10-15-2009, 06:45 PM
RAugur33 RAugur33 is offline
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Re: interior light issues....HELP

ok, not a fuse.

Looking for the b91 plug. Only black plug I can find is on the P/S floor, not a 20 pin. Have a picture by chance?

Thanks
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  #8  
Old 10-15-2009, 07:55 PM
trophy956 trophy956 is offline
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Re: interior light issues....HELP

hi ill see if i can copy it from the wiring book
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  #9  
Old 10-16-2009, 05:17 PM
RAugur33 RAugur33 is offline
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Re: interior light issues....HELP

Found the TCU, not the problem!
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  #10  
Old 10-16-2009, 05:43 PM
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Re: interior light issues....HELP

Quote:
Originally Posted by Trevor View Post
Check the two ground connections under the passenger seat, on the raised section alongside of the ABS control unit, and fastened with a single screw.
I do not see any confirmation that this has been checked. Based on logic this is a very possible fault.
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  #11  
Old 10-16-2009, 06:24 PM
AUSVX AUSVX is offline
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Re: interior light issues....HELP

There's also a ground wire that runs under the centre console. I'm not sure what it grounds but worth a check.
When you remove the centre console it's aft of the shifter
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  #12  
Old 10-16-2009, 07:28 PM
trophy956 trophy956 is offline
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Re: interior light issues....HELP

hi well since you found the unit you might as well make sure you have all the power there ,since there is 2 plugs there ,b91 red wire pin 3 12v from fuse 9,pin 7 blue/white 12v fuse 3,b90 red/white pin9 fuse 15 ,blue/red pin2 fuse 25,by the book the ground is the same as door locks ,turn signals and you dont have problems with them ,all the rest is in the bulk head wiring harness so i dont think theres another plug un done
good luck ,ill keep looking
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  #13  
Old 10-16-2009, 09:26 PM
RAugur33 RAugur33 is offline
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Re: interior light issues....HELP

Quote:
Originally Posted by Trevor View Post
I do not see any confirmation that this has bthe een checked. Based on logic this is a very possible fault.
This is next, I just didn't want to pull the chair/carpet if I didn't have to.

I did forget to mention that I lost one by one. First the spot/room lights went, then the floor lights, then RS door, a finally LS door and instrument panel. THis was about a two year process. Strange that power windows, sunroof, radio, seatbelts, locks and climate control still work.

Would the timer control unit go bad?
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  #14  
Old 10-16-2009, 10:19 PM
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Trevor Trevor is offline
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Re: interior light issues....HELP

Quote:
Originally Posted by RAugur33 View Post
This is next, I just didn't want to pull the chair/carpet if I didn't have to.

I did forget to mention that I lost one by one. First the spot/room lights went, then the floor lights, then RS door, a finally LS door and instrument panel. THis was about a two year process. Strange that power windows, sunroof, radio, seatbelts, locks and climate control still work.

Would the timer control unit go bad?
If as you now advise the lights ceased to operate “one by one. First the spot/room lights went, then the floor lights, then RS door, a finally LS door and instrument panel. THis was about a two year process.” There is but one common denominator, bulbs and the life of same.
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  #15  
Old 10-17-2009, 12:18 AM
RAugur33 RAugur33 is offline
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Re: interior light issues....HELP

I haven't checked all of the bulbs, but I did replace the door bulbs with no luck.

The fuses look good, but I am going to put a meter on them.

Thanks
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