charge trek VII - 'the unloader'

[tim eh?]

... from episode IV ....

-what does the 'unloader' relay do? I keep seeing it in wiring diagrams.

well... this is the unloader relay.



i still don't know what it does, but i'm pretty sure i need a new one.

there is no continuity between any of the terminals.

here it is in a wiring diagram... i was going to pull out the cluster but i think i'll deal with the easy stuff first.



tiger put me on the right track...

it's also hooked up to the dinky euro horns the PO installed.



have ordered one from the dealer that he thinks is a match - the numbers don't match anything he has but he thinks he has the right one.
shogun, may need you here...

here is the topside, sorry for the photo.

that is ...

602.039

61.36
1388745

pretty sure it is #3 here - could be #2 but the colour of #3 matches the one i have.



i'll dig around for that 'uncoupling diode' but otherwise i'll cross my fingers and hope it's the problem, not a symptom. i like the smell of this tho.

what does it do anyway? i noticed in later models (bentley 610-1) it is the terminal 'r' where i believe voltage is measured for the obc.

TBC...

[tim eh?]

i think this is all the result of the PO's 2nd alarm, dinky horn job and ignition switch replacement.




this job was tucked away, i only just found it now even tho i have been down here before a couple of times.
i think one wire (blue/violet) has to do with the horns... but the other one i'm not sure... unless...


i think that other wire is only blue but it may have brown or orange in it.... i must confess i am slightly colour blind with some combinations scary huh?

maybe something to do with this diode i am looking for that is supposed to be under the dash somewhere.... maybe it is the diode....no...



i have no idea if this is what i am looking for, but whatever it is it's supposed to match my interior?




oh yes... episode vi

Car stereo shops has those rings for thick gauge wires...

i beg to differ... most car stereo shops...




*- oh yeah... the unloader kills power to non vital electrical components when starting so that all the juice goes to the starter.
**- .... i think....

[tim eh?]

wait.... just.... a ..... second.....



i use the obc code alarm.

the first time i discovered the hood sensor and factory horn was around 8am one saturday morning, my neighbours were not happy.

soon after that my first alternator died....


edit- actually..... there is no doubt in my mind when this thing got fried.

http://www.bimmernut.com/forum/showthread.php?p=286252

btw- i don't go there anymore

i have to do other touch up work anyway

LMAO





TBC...

[tim eh?]

oops... i had the meter set too low.

85-86 = 100 ohm
85-87 = 1000 ohm
86-87 = 1000 ohm
30 = nada

#3 i think, so maybe it's ok then? looks ugly.

how do i test this?

[Tiger]

put positive to 30 and ground to 87 and you should hear a click... if so, it works.

[Ross]

put positive to 30 and ground to 87 and you should hear a click... if so, it works.

No. If it clicks the coil is good. The load contacts may still be bad, stuck or have high impedance.

[tim eh?]

no click.

[Tiger]

oops... my mistake... the 85 and 86 should make it click. Tim, make a rig so when you power it up, you can measure resistance between 30 and 87.

[attack eagle]

That is the clutch switch connector, and the factory bypass for automatic cars.

not an issue.

---------------------------------------------

standard bosch (now tyco) relay pin setup.


hope that explains how to test it.

[tim eh?]

That is the clutch switch connector, and the factory bypass for automatic cars.

not an issue.

---------------------------------------------

standard bosch (now tyco) relay pin setup.

hope that explains how to test it.

thankyou i was going nuts trying to figure out what that was -

even if i can't fix the car i'll have learned a pile about electrical stuff thanks to you guys.

...make a rig so when you power it up, you can measure resistance between 30 and 87.

my rig - i call it 'the exorcist'


ok still no click and no reading between 30 and 87.

the relay looks pretty fried.

when the weather clears up i'll test the plug terminals, don't feel like setting up my tent. the terminals look good at least...


would be cool if it was just the relay... but i'd really like to find this decoupling link too.
i don't get it - why is it 'natural colour'? i'm starting to go crosseyed looking at the etm.



i feel like i'm getting closer....