Rear Fog Light Woes Follow-up....

[9bar]

To anyone who might is interested and might be able to help me, read on......

Here's my findings so far......I picked up another fog-light switch and fitted same...nothing happens.

Used a multimeter to check voltages, continuity etc. on the orange connector the switch fits into with the lights on.....there is voltage at the green wire, and the red and black wire.....both nothing at all at the red and yellow wire terminal.

I tested the black and white earth terminal...it reads 0 when tested, though I did not disconnect the Battery when doing same so maybe I'm doing it wrong.

Here's the interesting part.....when I test the red and black wire for current (500mA setting, with the black probe in the B/W Wire/earth terminal of the orange connector) ) the instrument panel clicks/turns over, and the fog light panel warning light lights up...hurray......but then the fuse in the multimeter blows.

I'm sure by now you've worked out from this rambling post that I'm not much good at electronics....the real killer is I can't find the Fog Light relay (I assume it's buried behind the dash somewhere horribly awkward to get at no doubt) and I don't have the Carina handbookto refer to either.

Can anyone help me at all?

Cheers

Jonny

[9bar]

A wee update.....

I had a tow bar fitted (by the previous owner)....I checked the wiring in the boot to find it was joined to the car electric loom running across the inside of the boot just above the bumper serving both the rear tail lights.....I didn't check the tow-bar socket, I just disconnected the cable/splicing altogether......then checked the fog light switch...still nothing.

Before disconnecting the tow-bar cable I used a multimeter to check the orange switch connector for the fog light in the front dash panel....it was reading 6V voltages with the headlights on for the green wire, the black and red wire with full continuity across the black and white earth wire.

There was nothing at all for the yellow and red wire, even with a wiggle test.

After removing the tow bar cable I checked the orange connector again....there was voltage across black and red wire, nothing across the red and yellow wire as before, but this time no voltage for the green wire either.

I don't know what the correct voltage should be for these wires, or what they do (except for the earth wire obviously)....but here's the interesting thing......testing current across the red and black wire using the black probe in the earth socket there is a click and the orange fog light instrument panel indicator lights up....as do the rear fogs......hurray....so current is flowing......but two different switches I picked up from a scrapyard still don't work, and it's unlikely that both are broken.

I'm guessing it is likely to be an open-circuit fault, but and pretty peed off re: tracing same...I have the Haynes manual and have checked for an earth fault, though I'm pretty sure it's not the latter.....

E8: RH Kick Panel Passenger Compartment.....??? Any idea where is it located?

Is this near the pedals at the front of the drivers foot well?

E12:Luggage Compartment Centre Panel....Checked and found to be OK

E14: Base of RH 'C' Pillar...Any idea where same is? I'm guessing somewhere near the rear seat belt connector on the right/offside.

I just don't know where the damn Fog Light Relay is...I can see the door relay and the light reminder relay with the centre fascia/stereo panel open.....I really don't fancy having to rip out the front fascia to chase the wire....I don't suppose I'd be lucky enough that the Fog Light Relay is of the three clustered at the passenger fuse box? I changed them around (they are all identical with similar markings) in any event and still no joy with the switch.

At the rate I'm going I'll be bald by XMas unless someone has a moment of clarity and can enlighten me....I love my Rina and really don't want her to fail the NCT in January.....more to the point I've come so far as a complete mechanophobe and learned so much along the way I don't want to let this get the better of me......

Thanks for your time anyway

Cheers

Jonny

To anyone who might is interested and might be able to help me, read on......

Here's my findings so far......I picked up another fog-light switch and fitted same...nothing happens.

Used a multimeter to check voltages, continuity etc. on the orange connector the switch fits into with the lights on.....there is voltage at the green wire, and the red and black wire.....both nothing at all at the red and yellow wire terminal.

I tested the black and white earth terminal...it reads 0 when tested, though I did not disconnect the battery when doing same so maybe I'm doing it wrong.

Here's the interesting part.....when I test the red and black wire for current (500mA setting, with the black probe in the B/W Wire/earth terminal of the orange connector) ) the instrument panel clicks/turns over, and the fog light panel warning light lights up...hurray......but then the fuse in the multimeter blows.

I'm sure by now you've worked out from this rambling post that I'm not much good at electronics....the real killer is I can't find the Fog Light relay (I assume it's buried behind the dash somewhere horribly awkward to get at no doubt) and I don't have the Carina handbookto refer to either.

Can anyone help me at all?

Cheers

Jonny

[moonstone mart]

Usually when a car has a towbar fitted and the rear fog doesnt work - a quick kick of the towbar socket soon sorts it out as the small peg insdie the socket gets stuck and stops the foglamp from working.

It sounds as if the wiring for the towbar is aftermarket and a bit ropey - genuine Toyota wiring kits arent really that much to buy.

Just a couple of thoughts.

Mart :)

[9bar]

Cheers for the insight Mart

Methinks the smart thing for me to do would have been to check the tb socket before I disconnected the cable join from the car loom to rule that out....the wire splicing was a simple aftermarket job right enough but very tidy all the same...and removing that cable should have surely isolated/ruled out a socket problem anyway.......it's interesting cos no garage nowadays seems to want to know about wiring jobs, especially on old(er) cars.....

Still.... if I can find the location of E8 and E14 and more importantly the fog light relay I reckon I can solve the puzzle.....so if you know their whereabouts or know anybody who might...

Thanks for your time in any event

Jonny

[Diesel 888]

Hi,

Don't know if this helps but I am having problems with my rear fog lights, seems like the same problem.

Lights on constantly can't turn them off, I took it into the garage to get the brakes fixed and asked them to sort out the fog lights.

They also couldn't find the problem so just removed the Relay this wasn't much help as it also turned off the dashboard lights and the rear lights (which I found out coming home from work in the dark with just front lights, really good fun :( )

It's Sunday, garage is not open so I thought I would put the Relay back myself and it is one of the 3 clustered behind the fuses in a L shape, it's the one that makes the horizontal part of the L.

Took me a while to find them and almost put my back out doing it :D

But still have problem, I also have a towbar fitted and have a feeling that it is causing it somehow. Unfortunately I don't think the Relay is the problem :(

Cheers

[9bar]

Story Diesel 888

Sorry to hear you're having similar problems.....here's what I ended up doing for a finish...(once I'd filled in the disclaimer forms for a hair transplant)..it's not likely to help you out but I'm posting for the benefit of anyone else following the post who has been curious re: where I am at.

The key to my problem is orange block connector behind the dash for the fl switch...I figure it is a fault somewhere in the red/yellow wire myself.......I was messing around with a multimeter and quite accidentally by shorting the earth wire terminal (black/white) with the red and black wire terminal, the fog light dash switch came on and the lights worked (I stuck a MM probe in each slot on the orange block connector, and turned on the lights, literally)

So that gave me an idea....I removed both the aforementioned wires (you need to fiddle with the white plastic holder on top of the orange block connector)...wired them to a simple on/off rocker switch and hey presto...with the lights on, flick the switch and your fogs will glow a lovely shade of bright red.

But I'm nearly certain your problem is different...it sounds like a loose earth connection, I'd start by checking the wiring into the rear foglight bracket, then each of the earth points in the car...I can send you on a diagram from the Haynes manual showing their locations if it's any help).

Also, depending on the quality of tow-bar job..I'd bee checking the wiring of same esp. the black and white earth ones...someone did helpfully suggest on here that it is the socket pin of the tow-bar that causes the problem...and a good kick sorts same....but it's your motor brother, not mine so......

Good luck anyway...my next job is to (try)wire a Nokia CK-7W hands free bluetooth kit into a Blaupunkt MP68 stereo..jaysus I'm sweating at the thoughts of same... ;-)

Hi,

Don't know if this helps but I am having problems with my rear fog lights, seems like the same problem.

Lights on constantly can't turn them off, I took it into the garage to get the brakes fixed and asked them to sort out the fog lights.

They also couldn't find the problem so just removed the Relay this wasn't much help as it also turned off the dashboard lights and the rear lights (which I found out coming home from work in the dark with just front lights, really good fun :( )

It's Sunday, garage is not open so I thought I would put the Relay back myself and it is one of the 3 clustered behind the fuses in a L shape, it's the one that makes the horizontal part of the L.

Took me a while to find them and almost put my back out doing it :D

But still have problem, I also have a towbar fitted and have a feeling that it is causing it somehow. Unfortunately I don't think the Relay is the problem :(

Cheers

[BALIKBAYAN]

9Bar:

How about the diode (number 65 in Haynes) that is on the R/Y wire from the rear foglight switch to the combination switch terminal 13? If that one is blown you will not be able to turn on the foglights, unless you make a connection between R/Y wire and earth as you described you did.

You must have the sidelights or the headlights turned on to get the foglights to work.

Diesel 888:

How about the rear foglight relay? It does happen that relays get stuck and then you can't get it to work. The connectors in the relay glues together. To fix it you should try to change the rear foglight relay. I don't know where to find the rear foglight relay. I found in a pdf file in my computer that the celica from 93 has it behind right side kickpanel. The celica and the carina are very close to each other. All I can tell is start to search for the relay.