Turn Signals Don't Work

Post by **scotty-2-forty** » Wed Feb 03, 2010 7:22 am

Well, like the title says they stopped working. The fuse is good, so I'm thinking relay? ... and where is that located? Anything else I could check?

Post by **numbnuts240** » Wed Feb 03, 2010 7:24 am

hazard light button gone bad?

Post by **scotty-2-forty** » Wed Feb 03, 2010 7:27 am

Nah, the hazard light button was removed years ago to custom fit the turbo timer and boost controller.

** ... and I just realized this should probably be in the Technical forum, sorry. **

Post by **numbnuts240** » Wed Feb 03, 2010 7:56 am

what did you do with the wiring for the hazard lights? i'm wondering if something came loose there.

Post by **scotty-2-forty** » Wed Feb 03, 2010 8:18 am

numbnuts240 wrote:what did you do with the wiring for the hazard lights? i'm wondering if something came loose there.

Just unplugged it (years ago). The turn signals weren't affected. But now they stopped working. Where is the relay located, in the fuse box? Anyone have a diagram?

Post by **bersh240** » Wed Feb 03, 2010 8:19 am

do the blinkers on the dash come on?just the lights dont work?i had a bunch of bulbs blow at the same time.could be as simple as that?

Post by **scotty-2-forty** » Wed Feb 03, 2010 8:26 am

bersh240 wrote:do the blinkers on the dash come on?just the lights dont work?i had a bunch of bulbs blow at the same time.could be as simple as that?

Nope, no dash indicators or audible clicks. That's why I'm thinking relay. Or maybe the signal switch itself (on column)??? Hmmm

Post by **Steady_One_S13** » Wed Feb 03, 2010 8:34 am

Light switch?? The copper clips may not be making contact. You know...the clicks that you should hear. It happen to my old one. I tried fixing, butI accidentally bent the contacts.

Post by **scotty-2-forty** » Wed Feb 03, 2010 8:42 am

Steady_One_S13 wrote:Light switch?? The copper clips may not be making contact. You know...the clicks that you should hear. It happen to my old one. I tried fixing, butI accidentally bent the contacts.

Copper clips on what, the column switch?

Post by **Kelbizzle** » Wed Feb 03, 2010 8:45 am

scotty-2-forty wrote:
Just unplugged it (years ago). The turn signals weren't affected. But now they stopped working. Where is the relay located, in the fuse box? Anyone have a diagram?

Here you go. 1991-1994 240sx: Wiring diagram

Modified by Kelbizzle at 10:50 AM 2/3/2010
Modified by Kelbizzle at 10:56 AM 2/3/2010

Post by **Steady_One_S13** » Wed Feb 03, 2010 8:55 am

The switch itself. It has a series of copper contacts that allow the headlights, blinkers ans running light to operate. There's a write-up on this, but I can't seem to find it.

Post by **Kelbizzle** » Wed Feb 03, 2010 9:03 am

Another wiring diagram this one has been scanned @ 150dpi.

1991 Nissan 240 SX Wiring Diagram

Post by **scotty-2-forty** » Wed Feb 03, 2010 9:09 am

Thanks so far everyone, but is the 91 model year the same wiring as the 96?

Post by **scotty-2-forty** » Wed Feb 03, 2010 3:59 pm

So now, I'm thinking it could be the Combination Flasher Unit. I think it's one of the four to the left of the fuses inside the driver's kickpanel. Does anyone know which one it is and what the others are? The panel lid schematic only shows the fuses, not these units.

Post by **scotty-2-forty** » Thu Feb 04, 2010 4:20 am

Okay, so nobody knows. Does anyone know if the diagram here also applies to the S14? I'm just trying to limit pulling each one and testing them.

Post by **Steady_One_S13** » Thu Feb 04, 2010 4:51 am

Check your TCU. If it's not the switch nor relays or fuses, then my guess is the TCU. It's a small white box, driver-side kick panel (89-94). Not sure on the S14s.

Post by **scotty-2-forty** » Thu Feb 04, 2010 4:54 am

Steady_One_S13 wrote:Check your TCU. If it's not the switch nor relays or fuses, then my guess is the TCU. It's a small white box, driver-side kick panel (89-94). Not sure on the S14s.

Thanks. Yes, I'm thinking that or the Turn Signal/Hazard Flasher Unit as shown in the above pic. I can only find this diagram for the S13 and I just wanted input if it's relatively the same for the S14.

Post by **Steady_One_S13** » Thu Feb 04, 2010 5:07 am

BTW, your user name reminds me of the once wwe wrestler, Scotty 2 Hotty... lol.

Post by **scotty-2-forty** » Thu Feb 04, 2010 5:17 am

Steady_One_S13 wrote:BTW, your user name reminds me of the once wwe wrestler, Scotty 2 Hotty... lol.

Well, you're right! I had a kid that used to work for me that would always call me Scotty 2 Hotty (I guess because my name IS Scott, lol!), and when I first bought the 240 he modified the name. So I guess we could count that as the first real mod I made in the 240 scene.

Post by **scotty-2-forty** » Thu Feb 04, 2010 11:05 am

Okay, I don't give up ... it dawned on my that I had something from years ago. So after rummaging through some archived files I had stored on an external hard drive a few years ago, I came across a complete and official PDF version of the Nissan Service Manual for my S14. I found this (don't know why it's so stretched) which shows what those four relays are in the kick panel by the fuse box. Not what I expected, but at least that answers that. Then, a spark of wisdom occurred to me ... the combo flasher is part of the actual turn signal lever connected at the steering column! Don't laugh too hard ... I'm getting old ... and at least I figured it out. Now I just gotta dig into it, test it and/or replace it.

PS - If we don't have an official Nissan service manual here, I'll see if I can get it to upload. It is PDF files and if you have an S14 I can email you a copy, just hit me up

Post by **soupmotorsport** » Sat Feb 06, 2010 5:51 pm

oh man please keep me updated on how u will fix this, it just so happen it happen to my 95. no click no indicator light or signal nor hazard. thanks

Post by **Johannes** » Sat Feb 06, 2010 9:43 pm

soupmotorsport wrote:oh man please keep me updated on how u will fix this, it just so happen it happen to my 95. no click no indicator light or signal nor hazard. thanks

Sameee here. Ughh.

Post by **vancouverbc** » Sun Feb 07, 2010 2:47 pm

test turn signal switch. simple switch. clean or replace. $87 at rock auto

from 98 fsm:

look up headlight in tutorials for how to clean

Post by **scotty-2-forty** » Sun Feb 14, 2010 3:03 pm

Today I took off the headlamp/turn signal combo switch and took it apart. The contacts are all in great shape and nothing seemed unsual. So I took the harness plug that goes to the combo switch and looped a wire between the pin inserts ... still got nothing. I'd think that would eliminate a problem with the combo switch. I double checked the fuses (both turn signals and hazard); both were fine. Unless I'm missing something here, maybe the wiring went bad? I think next I'll bypass the factory harness with a couple of wires to the fuse and see if I get a positive result. If anyone has any other ideas, please feel free. So simple, yet so frustrating.

Post by **scotty-2-forty** » Mon Feb 15, 2010 7:24 am

Scratch that last thought. I was sitting here thinking about yesterday when I was redoing the mess in my dash (see Quite Dashing post), and it occurred to me that there wasn't a hazard switch on the end of the harness behind the dash. See, I removed the hazard switch from the dash to place the turbo timer there. But I had it still functioning behind the dash. I think when my friend put that stereo in, he removed the switch. I know the turn signal wires run through that switch, right? Hmmm ... I'm going to have to recheck that tonight.

Post by **vancouverbc** » Mon Feb 15, 2010 8:15 am

this is for 91

http://img169.imageshack.us/im...9.jpg

Post by **numbnuts240** » Mon Feb 15, 2010 8:28 am

scotty-2-forty wrote:I know the turn signal wires run through that switch, right?

no hazard button plugged in, no turn signals at all. i ran short of connectors when i was wiring up my mirrors one night. i ran to the parts store with my center console all apart and was wondering why my turn signals weren't working. i eventually figured out that my hazard button not being connected was the reason why, which is why i suggested it earlier. it's simple to check and quickly ruled out if it isn't the issue.

Post by **scotty-2-forty** » Mon Feb 15, 2010 8:33 am

numbnuts240 wrote:
no hazard button plugged in, no turn signals at all. i ran short of connectors when i was wiring up my mirrors one night. i ran to the parts store with my center console all apart and was wondering why my turn signals weren't working. i eventually figured out that my hazard button not being connected was the reason why, which is why i suggested it earlier. it's simple to check and quickly ruled out if it isn't the issue.

Yes, I know you brought it up and thanks. It just didn't occur to me due to being out of sight (out of mind). The damn switch was there behind the dash, but it got removed completely during the time the car was not in my posession. Mental Note: Never ever ever EVER let go of your 240 again Scott! << That's me slapping myself!

Post by **numbnuts240** » Mon Feb 15, 2010 8:38 am

scotty-2-forty wrote:Mental Note: Never ever ever EVER let go of your 240 again Scott! << That's me slapping myself!

i went through the same thought process after getting rid of my first s13 and picking up a sentra

Post by **scotty-2-forty** » Mon Feb 15, 2010 8:47 am

numbnuts240 wrote:
i went through the same thought process after getting rid of my first s13 and picking up a sentra

Hahaha ... well, at least I got the same car back which was hardly ever driven and very well taken care of other than the fact that my friend has no eye for detail or asthetics. It's a simple mistake, so I won't hound him too much. This is my ex-business partner and he kept the car knowing I was making a mistake trying to get a sport bike (duh!). Hey, had fun with the bike though! The 240 sat stored in his shop for almost 5 years, only driven to the track a few times ... hell, put barely 1K miles on it. But snapped the crank (yes I said 'crank') at the track a couple years ago, so the bottom end was rebuilt ... same in internals as before though. I consider myself very lucky.

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