Is it also called a distributor pick-up coil? Having a hard time finding this part under Hall Effect Sensor or Hall Effect Pick-up.Originally Posted by 135sohc
Is it also called a distributor pick-up coil? Having a hard time finding this part under Hall Effect Sensor or Hall Effect Pick-up.
Yes that is correct. It should have two wires for turbo models.
Regards,
Miles
DD '87 Sundance T1, SLH with rear disks
'87 CSX #432 2.5 CB TII, SLH
OK, I'm back. Armed with my new shop manuals, having removed the battery from the car, along with a bunch of plastic that was getting between me and the wiring harnesses. I have a question about the natural state of the ASD Relay. It has four wires going to it, two smaller ones to activate the coil to make the relay work, and two larger ones, a red one bringing 12V from the charging system and a green one that is supposed to pick up the 12v on the other side of the relay. The question I have is whether the relay is normally closed (i.e. when there is no power to the actuator coil) or is it open and only closes when the coil is "hot"?
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I am thinking that it is thing 2 but I just wanna be sure...
Indeed the relay closes (conducts current) when the coil is activated. When the relay is in the car I have 12v on the red wire, but none on the green wire, with the ignition switch on which means the coil is not activating for whatever reason. Chasing that now.
The ASD is only activated under certain conditions. It's not hot at all times with the ign. on. It'll make connection to prime the pump, and when cranking the car. Other than that I believe the computer needs to see a signal from the HEP for it to be energized.
Hi Cordes,
According to to the wiring diagram, at least the way it looks to me, both the fuel pump and the ignition coil get their +12V through the ASD, which means it would have to be activated (closed) for them to work. I put a meter on the the blue/yellow wire that brings +V to the ASD activator coil, tried cranking the car, no 12v, so the ASD is OPEN thus no voltage to the ign coil and fuel pump. Am I barking down a cold trail?
HWBAT
That's correct. If you're not getting power to the Z1 circuit while cranking there is a problem. It could be a bad relay, wiring to/from the relay, or the computer itself.
The blue/yellow wire that is supposed to bring the +12v to the ASD, but is not doing so, comes out of the SMEC. I believe that I have been SMEC'd.
So what happens if I just hot-wire it so I can activate the ASD from a switch inside the care. Would that blow the damn thing up?
I've thought about, but never done that. I would think that it would freak out the computer, but I don't know for sure.
Found a SMEC online, new, for about $130. Might as well do that.
You can try that. In my experience, if the car won't prime the pump and the wiring to the pump and ASD is good, then it's the computer.
Thanks, Cordes. Will let you know how it works out.
Corrosion at the fusible link bundle.
I've fixed this before. On an H body the battery pukes acid right on top of it.Over time, lotza corrosion. Loose motor mounts allow for a rockin/stretchin wiring harness. Till you finally rock too hard.
Arghhh! New SMEC, no voltage. Back to the drawing board : /
BigBrudda, fusible link bundle looks like new, all links solid, no stretch BUT, since it does not seem to be the SMEC, I gotta recheck everything. what I am thinking at this point is that there is an input to the SMEC that would trigger the voltage I am looking for so I am going to go "Beyond The SMEC" in search of the truth.
Have you checked the pins are seated in the smec connector? Mine has two broken latches for holding the pins in the proper location. I had to secure those pins in place so they dont unplug when the smec is plugged in.
So, what sort of event must occur for Automatic Shutdown to take place? There must be some input to the SMEC saying "no more voltage to the Z1 circuit, please."
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SMEC connections are solid.
Meanwhile, back at the SMEC diagram, there is mention of Fuse J2. Can see all kinds of references to J2 on sheet H8 but no sign of a Fuse J2. All the rest of the fuses have numbers but no letters. Who can solve the mystery of the whereabouts of Fuse J2?
J2 is the dark blue wire which runs every which way. Including to the ASD and diagnostic connector. It probably has a fusible link for it? I don't think it runs to a fuse under the dash, but the wire does run up there to the ign switch I believe.
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