|
|
|
The headlights on my 1990 240DL wagon only work when the switch is in the parking light position. When I turn it to the headlight postion, the lights go out. I have looked up the headlight relay on the Dave Barton website and it says that the relay is a single pole single throw relay. I don't understand how that could cause the problem. Isn't a SPST relay simply an on/off switch?
Sign me confused in Portland.
Bikerider
|
|
|
|
I'm betting on the Main Light relay. Internal arcing maybe connected the 2 output terminals (87 and 87c). So they are getting powered by the Parking light fuses in Switch position 2.
That relay is unique.
The 2 outputs aren't "common" 'til the relay is energized.
This prevents Parking light voltage from back-feeding to headlights when switch is in the PL position
Volvo # is 1324749 (usually a Bosch 006
Good Bosch numbers are: 0 332 015 006/012/013
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
|
|
|
|
I'd be betting with you, Bruce. Bet my entire ISO character set and what a bunch of characters they be. Some grew up in Autagaville.
However, I would always suspect, on a new purchase, the seller may have had less than expert assistance prepping the car for sale. Could be anything stuffed in that socket, eh?
--
Art Benstein near Baltimore
Mothers of teens now know why some animals eat their young.
|
|
|
|
|
Love the picture Art. Just what's needed here.
But by '90, didn't the Main light relay migrate up behind the vents, to the left of the glove box?
In any case, I sure wish we knew what number is on the potential culprit. I've asked twice, but get only something about "charset..." which leaves me scratching.
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
|
|
|
|
|
Yup, that's all I see from OP. He's probably scratching his head too, along with the sudden move to Alabama in his profile.
I admit the photo above is from our '89, pre-airbag, but I believe the relay we are discussing did not migrate to the rail behind the vents until the harness changed in '91, when the FI fuse moved indoors and the AC lost its TXV.
In the past, I've searched my photos for one of a '90, in answering this very question, so I know all I have is a photo of the relays that are on the rail in '90 and not one of the headlight relay. But vague as it sometimes is, I've had some feedback (check post #16) from those who used the '89 photo to find it, and found it in their '90.
Seems odd I wouldn't have my own picture, though. Maybe my grandson (owner of the '90) has not yet had the burned headlight relay socket problem yet.
--
Art Benstein near Baltimore
Children seldom misquote you. In fact, they usually repeat word for word what you shouldn't have said.
|
|
|
|
|
An spst switch is indeed a simple on-off switch ("single throw") for one circuit ("single pole").
As for your headlight problem, I have a wiring diagram (Volvo's green book). You say that the headlights only go on in the light switch's parking light position, and that they go off when you move the switch to its headlight position?
First, to clarify, (1) you are observing this with the engine on, and running, right *? And (2), this is a new problem in a car that you've owned for some time -- i.e., you haven't just bought this car from someone else and discovered this as you brought it home **?
[to eliminate other possibilities:
* the headlights shouldn't work in "headlight position" when the engine is off -- so that the headlight switch can be left on indefinitely to serve as DRLs.
** to be sure that this wasn't a deliberate modification by some stupid prior owner.]
Then, three further questions to further help figuring this out:
1) when the headlights are on, does the high-low beams switch normally back and forth by the turn signal's "flasher" switch, or is only the high or the low beam the only one that works?
2) when the headlights are on, are the parking lights also on?
3) when the light switch is in headlights position, while the headlights are off are the parking lights also off, or are they on?
|
|
|
|
|
I just bought the car, and the problem existed when I bought it. I assumed it was simply the switch. So much for assumptions.
To answer the questions;
1) The high/low switch works
2) The parking lights are on with the headlights
3) Both the headlights and parking lights go off when the switch is turned to the headlight position.
I hope this info helps.
Phil
|
|
|
|
|
Still sounds like the Main Light relay to me
"I just bought the car, and the problem existed when I bought it."
• Wrong or shorted Main relay contacts (if HL come on in light switch position 2).
[Switched 12v to PL fuses 15&16 is back-feeding to Hi/Lo Step relay via Main relay 87 contact(s).]
• Plus Main relay not working correctly (if no HL or PL in switch position 3).
[Switched 12v should "pick" Main HL relay, sending 12v to PL fuses AND High/Low Step relay.]
What is the Bosch number on the Main Light relay?
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
|
|
|
|
|
I will replace the relay and see what happens. It will be a few days before I get to it but I will let you know the result.
|
|
|
|
|
...What is the Bosch number on the relay you have now?
If it came from Volvo, it will probably be a Bosch 0332 015 006.
Bosch 0332 015 012 or 013 are OK too.
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
|
|
|
|
|
I fially had the time to work on this. The relay that was in the car has two sets of numbers. On one side is Volvo 9130269 on another side is Hella 4RA 003 510 73. I replaced it with a relay from Dave Barton. The headlights now work properly, going off with the ignition switch. However the headlights still come on with the parking ligts. I am assuming that someone has spliced the circuits together. So my next project will be to trace the wires to find the splice.
|
|
|
|
|
"However the headlights still come on with the parking ligts. I am assuming that someone has spliced the circuits together."
No - you have the wrong relay, which is effectively "splicing" the parking and headlight circuits together.
• You need Volvo part # 1324749, or one of the Bosch numbers I posted earlier: Bosch 0332 015 006 (012 or 013 are OK too).
Your present (wrong) relay (9130269) is used as an S70/V70 Flasher or as a 700/900 series Power Window relay.
--
Bruce Young, '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.
|
|
|
|
|
