smorris

Have searched but can't seem to find an apparent reason...
Replaced relay to ensure this isn't the issue, same problem with new relay.

Headlight switch will send power to relay which activates motors and raises the headlights, power goes to all dash and parking/driving lights. High beam switch will activate lower driving lights but I get no high or low beams from main Headlamps.

With ignition on and headlight switch on, headlights go up but no power comes from terminals 56a or 56b which should send power the appropriate fuses and then to Headlamps? Jumping power directly to proper fuses will power lights so they are not the issue.

Any ideas? Have replaced the relay with a new one from Roger and same issue.... am I missing something?

ROG100

Combination switch - high beam stalk not working maybe?

smorris

Roger,
How would I test for that?
Everything worked perfectly when I took the car apart almost 4 years ago!

It has got to be a switch or wire somewhere, checked the pod switches to be sure that all wires were connected and none push out of the back of the connectors... will double check all wires and connections at the high beam stalk...

Everything seems to work as it should, just no power through the relay to the lights!

I can't seem to make sense of the relay wiring so not sure what isn't sending a signal or power to activate something else! (Should have studied electrical engineering in school!!)

Alan

What year is this? Since you know the lights work from the relay onward and you supect its not the relay (there are different relays by year are you sure you had exactly the same type as a replacement?), then that leaves the light switch or its wiring to the relay or the power to the relay.

The relay has 1-2 relays (depends on year) related to the motor up/down, a beam on/off relay and a beam hi/lo relay. It seems the motor relay(s) work OK, the on/off relay isn't working and the hi/lo is indeterminate at this point. The hi/lo relay is controlled by the combination switch and it is NOT the cause of this issue - can't say it works for sure but it doesn't cause a no beam output issue - it can only ever be in one of hi or lo mode.

Depending on year this could be caused by an X-Bus failure - do your front foglights work, how about the brake lights?

Alan

smorris

All lights except main beams work...
Turning pod switch will activate dash lights, (fog lights if on), lights raise and will power the inboard driving lights if the hi beam switch is flashed or activated.
Brake lights work, parking lights work, everything seems to work except no power out of the relay to the appropriate fuse powering the main beams or high beams.
Car is an '82 euro, relay is the double one, same results with new and old relay.

Alan

So you have the HL relay version with 3 internal relays.
How did you do this exactly? what fuse terminals did you connect to? specifically does it work from the bottom fuse terminals?

Check connectivity from the relay socket to the bottom fuse terminals

56a to the bottom of fuses 24 & 25
56b to the bottom of fuses 26 & 27

Check on pin 56 of the relay socket - this is the signal that turns on the lights when the HL switch is in position 2 (of 0-2).

Alan

smorris

First, I appreciate your help!

To answer your questions:
Yes, the Lights work if 12v is jumped to the bottom of fuses 24-27.

I tested connectivity between 56a and 56b and their respective fuses, all is working and connected properly

Checked the back side of the relay terminals with the NEW relay in place and found the following:
In position 2 terminal 56 does have power but terminals 56a and 56b still do not. Checked it through out the switch positions and 56 is only powered in post 2 as it should be.

This would point to a malfunctioning relay, correct?

Alan

I think so yes (but two malfunctioning relays in this case right?)

Terminal 56 active initially causes the pods to rotate up and then when the pods are fully up enables the headlights.

The lights go on when the relay thinks the pods are up and since the pods rotate up and park at the right place and rotate down and park at the right place - that all seems to be working OK.

I don't have any other logical reason for it not to work unless the relay 30 terminal is not connected to the battery - test for 12 at the socket terminal.

Alan

smorris

Did some tests:
Ignition off, light switch position 0:
12v to term 30, 30a, 30b

Ignition on, switch position 0:
Power to 30, 30a, 30b + power to x and 30bm

Ignition on, light switch in position 1:
Power to 30, 30a and x
*parking light front and rear are on

Ignition switch on, light switch in position 2:
Power to 30, 30b, x, and 56
*pods go up fully, parking lights on, no main beams
**Term 30m and 86m are powered while pods lift, once raised no power. Relay makes audible click at either end of cycle.

Ignition switch on, lights switch position 2, bright switch activated
power to 30, 30b, x, 56 and now 86
*lower driving lights on, no main beams

If I understand the wiring diagram, it would seem that 86m initiates the motors to raise and lower the pods, with the main beams (56a) receiving power from 30/30a with the signal from 56. High beams would receive power with the same and a signal from 86.

Would seem all is in order except the signal from 56 is not activating the internal relay that sends power to 56a/56b... meaning both relays are faulty with the same issue!?

Is there a bench test that i can perform on each relay to test?
Anyone willing to test one of the 2 relays I have in a known working car?

Alan

This is not correct - 30b should only be active with the headlight switch in position 0. This is the signal that makes the pods go down.

Everything else sounds fine. Recheck to make sure?

Alan