I am an avid reader of the posts but this is only the second time I have
My beloved synchro has no lights. Low beam in particular.
When I flick the light switch, I get parkers and can make the high beam
come on by holding the arm in on the steering column. When I release the
arm, the high beam goes off and I am left with parkers only.
I have checked the fuses and they are not blown.
Any assistance and/or guidance towarda previous relevant posts would be
Thank you and wishing everyone a fantastic 2011!
looks like I have similar symptoms
Parking lights work (ignition on or off)
High beam works, but with flash (light switch off) and latches on high beam when headlight switch is off.
Low beam headlights do not work (either side)
Checked so far:
Both fused good and tested
I have installed additional relays so high power does not run through the switch, have relaced relay, no change.
Checked the wiring where I into/out of the relay
Checked the light switch for continuity, all checks out correct
Checked cables and power into plug that connects to light switch
When turning the light switch on, the relay also clicks.
Have not checked the bulbs yet (but would be odd both went at the same time)
Looks like there is a relay in the fuse box, I will check this also. Does the one relay control both high beam and low beam, or are they separate?
Any ideas where else to look?
Sounds like you have done basically everything you can do.
With a multi-meter, do you get power to the headlight terminals when the lights are switched on with ignition on?
Thanks Scott, ignition off there is power to the terminals that supply the parkers and dash lights.
Ignition on I have power to the terminal that supplies the head lights.
With the light switch, I jumped a wire from the supply terminal to the terminal going to the lights with no luck.
Will do some more checking over the week end.
Otherwise my trip away might be day time driving only
Thanks Scott. As they say the problem is always the last place you look… Or for me try the simplest things first!!
Checked the ignition switch also, no luck, pulled the plug from the ignition switch and put on a new one, no change. the power only runs through fuses in the fuse box, not through a relay there
Thinking back on previous testing, the relay (I installed) was turning on/off fine with the light switch, so power was getting to the relay fine.
Just to add a bit more to the story, I have bypassed the main power that runs through the ignition switch, the switch only powers a relay.
So in all, I have three relays to keep high power out of the ignition switch and head light switch, one runs all the accessories, one for low beam, one for high beam (I even doubled up all the high power cables back to the battery).
Anyway, re-did all previous testing, pulled the fuse box out and checked everything there, nothing obvious.
Well, time to look at the head lights themselves, yep power was getting to the light plugs!!
So in short, yes BOTH head lights had blown at the same time (was driving the previous night with both lights working). Never would have thought that.
Anyway, two new bulbs installed and I’m back up and running.
Rather than fit the spare (standard) bulbs I have, bought a set of the “130+” bulbs. But might need to look at LED ones
One day left to finish preparing the bus for a trip away
Good news Richard…perseverance pays off.
Where’re are you off to?
As you say always the last place you check!
Have been busy again, spent a week over on Moreton Island. Great to get away and a nice relaxing trip. Very little driving but a lot of fun.
Seem to be having a few gremlins creeping into the Syncro.
In addition to the bulbs, on Moreton, the radiator fan was not kicking in, was just a blown fuse luckily. Few days later, losr power to the dash accessories. Again a blown fuse. Also having trouble with the battery. Alternator/regulator etc seem fine so far, and cables/connections look sound. The battery is getting quite old though, so will replace it an see how I go.
The AC compressor is also not kicking in now (the clutch does not engage). Have not had much time to investigate, fuses look good, but the relays look original, so will test them and the cabling next.
I took my syncro on Moreton about 20 odd years ago - loads of fun - an awesome island for 4wding.
Maybe give your terminals a clean then refit.
The AC wont work if you have had a leak in the system as the pressure valve will sense insufficient pressure and not allow the compressor to engage.
Cheers Scott, yes I have pulled each fuse and had a look. Most are still original and connections are clean. Might be worth giving each a rub with rough dry scouring sponge.
Checked what I could on AC, still has the original relays, and both still working fine!! Confirmed power to both and both operate fine, and no resistance on the switching terminal when on, fuses are OK
Put power to the AC compressor clutch and works fine.
Had a look at the pressure switch you mentioned, one of the cables was just hanging there, but not connected. I’m guessing when the compressor was replaced (few years ago now) the cable was not supported correctly causing the cable to break. Managed to remove the cap on the switch and re-soldered the cable inside the cap. All running again!
Also bleed the brakes and clutch while I was checking over the van (brakes/bearings/CV’s etc).
Often its just minor things causing an issue.
I think the van is mostly ready now, packing after work tomorrow!