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+--- Thread: Update on ZF trouble 87FC35 (/showthread.php?tid=3424)
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Update on ZF trouble 87FC35 - erniecarpet@... - 09-13-2006 08:55
Alan, this is a long shot-- Steve Gureasko, 90WLWB had trouble with his coach
not going into gear. Does your coach have a manual shifter or a touchpad? He
had to replace his touch pad, as there was a burnt part of that. Just another
idea.
Ernie Ekberg
83 PT40
Livingston, Montana
[Non-text portions of this message have been removed]
Update on ZF trouble 87FC35 - erniecarpet@... - 09-13-2006 09:33
Alan, if you can access the backside of your touch pad--- maybe- and just
maybe- a wire might have come off.
Ernie Ekberg
83 PT40
Livingston, Montana
[Non-text portions of this message have been removed]
Update on ZF trouble 87FC35 - Alan - 09-13-2006 12:30
Well, after many hours this is where I currently am.
1. I have zero volts going to my ZF ECU.
2. The coach won't start. Now I'm pretty sure that's because
without voltage to my ECU, the coach doesn't know if it's in gear or
not. (I can jump my starter solenoid and it starts.)
3. I talked to Dan at ZF in Chicago and he was quite helpful. He
told me how to check voltage on the ZF. BUT he didn't know where the
ZF gets it's power off the coach.
4. I am getting volts out of my 75amp ignition relay with the key
turned on.
There are bunches of ZF wires behind the grill in the steering
column access panel. There are also two silver boxes with what are
apparently ZF wires going in and out of them. The boxes are about
4" x 4" x 1". However, I know these aren't the ZF ECU. It is
located underneath the push-button gear selectors by the driver. I
don't know if they have anything to do with power.
Questions (If anyone knows):
1. Where/how does the ZF get power from the coach?
2. Does the power go through the filtered power source under the
couch?
3. What would keep me from getting any power to the ECU?
Tomorrow I'm ordering a full set of electronic drawings, but in the
mean time my neighbors would appreciate it if I can get the coach
moved from the street.
Thanks,
Alan Johnson
972.769.2526
87FC35
Update on ZF trouble 87FC35 - Alan - 09-13-2006 13:25
One more thought. I re-looked at the "fix" on the web site for a
low-voltage problem. I don't think i've ever found that 12 volt
relay for the ZF. I found the 75amp one, but this appears to be
another one. ZF wire #19 is nearly impossible to trace. best i can
tell, it goes under the coach and off into oblivion. ...But my
common sense tells me I'm missing that relay and it's probably
someplace accessible, I just don't know which one it is. ANY IDEAS
ON WHERE THIS RELAY IS?? I'm betting at least 50/50 this is still
my problem.
Ernie, mine has the push-button gear selector.
Bill, your suggestion about checking the barrel connectors was good
too. I had a problem there too. I'm not sure how these problems
are related, but probably somehow. I had a melted pin in one of the
connectors. It was the 12v supply to the ignition switch. I'm
suspecting it had been going bad with corrosion, and somehow all
my "trouble shooting" was the end of it. I corrected that problem.
Thank,
Alan
--- In WanderlodgeForum@yahoogroups.com, "Alan"
wrote:
>
> Well, after many hours this is where I currently am.
>
> 1. I have zero volts going to my ZF ECU.
> 2. The coach won't start. Now I'm pretty sure that's because
> without voltage to my ECU, the coach doesn't know if it's in gear
or
> not. (I can jump my starter solenoid and it starts.)
> 3. I talked to Dan at ZF in Chicago and he was quite helpful. He
> told me how to check voltage on the ZF. BUT he didn't know where
the
> ZF gets it's power off the coach.
> 4. I am getting volts out of my 75amp ignition relay with the key
> turned on.
>
> There are bunches of ZF wires behind the grill in the steering
> column access panel. There are also two silver boxes with what
are
> apparently ZF wires going in and out of them. The boxes are about
> 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> located underneath the push-button gear selectors by the driver. I
> don't know if they have anything to do with power.
>
> Questions (If anyone knows):
> 1. Where/how does the ZF get power from the coach?
> 2. Does the power go through the filtered power source under the
> couch?
> 3. What would keep me from getting any power to the ECU?
>
> Tomorrow I'm ordering a full set of electronic drawings, but in
the
> mean time my neighbors would appreciate it if I can get the coach
> moved from the street.
>
> Thanks,
> Alan Johnson
> 972.769.2526
> 87FC35
>
Update on ZF trouble 87FC35 - birdshill123 - 09-13-2006 13:42
Alan: I am looking at the wiring diagram for the FC with a ZF, drawng
#1255157. They show the power source as the starter relay. This relay
has 4 terminals. One is an 8 ga. red and connects to the starter
solenoid, one is black 8 ga. and also connects to the starter solenoid,
one goes to ground. The 4th wire is red and goes to a terminal block
and connects to #4. I dont know where this block is located but I
suspect close to the shifter. There should be 3 terminal blocks. One
with 11 terminals (this is the one you want), one with 4 and another
with 8. Another owner with a ZF told me of having a problem similar to
yours. He found a realy behind the shifter that was faulty. Good Luck
Bruce
Update on ZF trouble 87FC35 - pattypape - 09-13-2006 14:08
Hi Alan,
Do you have the ZF Operating instruction Book?? It is a small
Blue book about 6" x 8" . There is a procedure to manually
shift a lever on the Trans into forward or reverse. This may help
get the bus off of the road. I have not had the opportunity to try
this, nor do I have this experience .
You may want to check the neutral switch under the push button panel.
I believe there is a manual switch or linkage there. The ZF may be
looking for the Neutral button to engage.
I also think that 12v modification Bosh 30 amp. relay, is at the
base of the left side carpeted panel far forward, just hanging by
the wires.
There are two side by side Bosch 30 amp relays mounted forward of
your left foot, these are the headlight relays.
The two relays accessed from the front panel, forward of the
throttle & brake pedals, these are the driving light relays.
I do not know about those silver boxes. They could be turn
signal/hazard light junction boxes. Lots of wires in there.
Hope this helps,
Bill 88 FC
--- In WanderlodgeForum@yahoogroups.com, "Alan"
wrote:
>
> One more thought. I re-looked at the "fix" on the web site for a
> low-voltage problem. I don't think i've ever found that 12 volt
> relay for the ZF. I found the 75amp one, but this appears to be
> another one. ZF wire #19 is nearly impossible to trace. best i
can
> tell, it goes under the coach and off into oblivion. ...But my
> common sense tells me I'm missing that relay and it's probably
> someplace accessible, I just don't know which one it is. ANY
IDEAS
> ON WHERE THIS RELAY IS?? I'm betting at least 50/50 this is still
> my problem.
>
> Ernie, mine has the push-button gear selector.
>
> Bill, your suggestion about checking the barrel connectors was
good
> too. I had a problem there too. I'm not sure how these problems
> are related, but probably somehow. I had a melted pin in one of
the
> connectors. It was the 12v supply to the ignition switch. I'm
> suspecting it had been going bad with corrosion, and somehow all
> my "trouble shooting" was the end of it. I corrected that problem.
>
> Thank,
> Alan
>
>
> --- In WanderlodgeForum@yahoogroups.com, "Alan"
> wrote:
> >
> > Well, after many hours this is where I currently am.
> >
> > 1. I have zero volts going to my ZF ECU.
> > 2. The coach won't start. Now I'm pretty sure that's because
> > without voltage to my ECU, the coach doesn't know if it's in
gear
> or
> > not. (I can jump my starter solenoid and it starts.)
> > 3. I talked to Dan at ZF in Chicago and he was quite helpful.
He
> > told me how to check voltage on the ZF. BUT he didn't know where
> the
> > ZF gets it's power off the coach.
> > 4. I am getting volts out of my 75amp ignition relay with the
key
> > turned on.
> >
> > There are bunches of ZF wires behind the grill in the steering
> > column access panel. There are also two silver boxes with what
> are
> > apparently ZF wires going in and out of them. The boxes are
about
> > 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> > located underneath the push-button gear selectors by the driver.
I
> > don't know if they have anything to do with power.
> >
> > Questions (If anyone knows):
> > 1. Where/how does the ZF get power from the coach?
> > 2. Does the power go through the filtered power source under the
> > couch?
> > 3. What would keep me from getting any power to the ECU?
> >
> > Tomorrow I'm ordering a full set of electronic drawings, but in
> the
> > mean time my neighbors would appreciate it if I can get the
coach
> > moved from the street.
> >
> > Thanks,
> > Alan Johnson
> > 972.769.2526
> > 87FC35
> >
>
Update on ZF trouble 87FC35 - Gregory OConnor - 09-13-2006 16:08
Why find it. find a good hot lug and use a ignition wire to open a
new relay to power the ECU. find out the amp limit and fuse it. Make
a note on #19 of the change you made. You may have to power the
relay that cuts off the starter solenoid as we now know that the
starter solenoid wont power at all without power to the ecu. I know
it sounds like ducttape and bailing wire advice but if you replace
the relay supplying the power you may only be repairing a result and
not a cause. It just sounds to me that fixing your failure will not
correct the problem.
I dont like to reengineere things. In my field of expertiese, I use a
hammer. When that hammer wont complete the task, I get a bigger
one. I think you need the expert advice of JohnF, TomW, CurtS JeffM
and the other electrical members. This ZF power thing is gonna get
some one hurt. It would be great to do an upgrade to a bus and keep
it from developing the "ZF'up"
Gregory O'Connor
94ptRomolandCa
--- In WanderlodgeForum@yahoogroups.com, "Alan"
wrote:
>
> One more thought. I re-looked at the "fix" on the web site for a
> low-voltage problem. I don't think i've ever found that 12 volt
> relay for the ZF. I found the 75amp one, but this appears to be
> another one. ZF wire #19 is nearly impossible to trace. best i
can
> tell, it goes under the coach and off into oblivion. ...But my
> common sense tells me I'm missing that relay and it's probably
> someplace accessible, I just don't know which one it is. ANY IDEAS
> ON WHERE THIS RELAY IS?? I'm betting at least 50/50 this is still
> my problem.
>
> Ernie, mine has the push-button gear selector.
>
> Bill, your suggestion about checking the barrel connectors was good
> too. I had a problem there too. I'm not sure how these problems
> are related, but probably somehow. I had a melted pin in one of
the
> connectors. It was the 12v supply to the ignition switch. I'm
> suspecting it had been going bad with corrosion, and somehow all
> my "trouble shooting" was the end of it. I corrected that problem.
>
> Thank,
> Alan
>
>
> --- In WanderlodgeForum@yahoogroups.com, "Alan"
> wrote:
> >
> > Well, after many hours this is where I currently am.
> >
> > 1. I have zero volts going to my ZF ECU.
> > 2. The coach won't start. Now I'm pretty sure that's because
> > without voltage to my ECU, the coach doesn't know if it's in gear
> or
> > not. (I can jump my starter solenoid and it starts.)
> > 3. I talked to Dan at ZF in Chicago and he was quite helpful. He
> > told me how to check voltage on the ZF. BUT he didn't know where
> the
> > ZF gets it's power off the coach.
> > 4. I am getting volts out of my 75amp ignition relay with the key
> > turned on.
> >
> > There are bunches of ZF wires behind the grill in the steering
> > column access panel. There are also two silver boxes with what
> are
> > apparently ZF wires going in and out of them. The boxes are
about
> > 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> > located underneath the push-button gear selectors by the driver.
I
> > don't know if they have anything to do with power.
> >
> > Questions (If anyone knows):
> > 1. Where/how does the ZF get power from the coach?
> > 2. Does the power go through the filtered power source under the
> > couch?
> > 3. What would keep me from getting any power to the ECU?
> >
> > Tomorrow I'm ordering a full set of electronic drawings, but in
> the
> > mean time my neighbors would appreciate it if I can get the coach
> > moved from the street.
> >
> > Thanks,
> > Alan Johnson
> > 972.769.2526
> > 87FC35
> >
>
Update on ZF trouble 87FC35 - one_dusty_hoot - 09-13-2006 16:17
Alan,
A diesel engine doesn't need a lot to keep running.
There is an upright fuel shut-off solenoid at the
front of the engine near center. A little smaller
than a drink can. This get 12 v from the ignition
switch and allows the engine to have fuel.
The fuel pump at the tank gets 12V when the oil pressure
switch on the 3208 has oil pressure. There is an internal
an internal pump within the injector pump as well and may
be to pull the fuel from the tank. This is a mechanical pump.
With 12V on the solenoid, bump the starter, it should start.
NOW, not for the faint at heart. This is not safe at all and you
can be killed doing this so you are at risk in more ways than the
coach rolling over you.
****UNDERSTAND COMPLETELY THE RISK, PROCEED WITH CAUTION******
There is a lever on the ZF that will get the coach to move in just
such a situation. It is a short lever on the transmission. This has
the function of Forward, Neutral, Reverse.
Forward 20* down
Neutral center
Reverse 20* up
The engine and torque converter has to be running.
Someone in coach with parking brake, not foot brake on
(must be ready to keep the coach from moving.)
Another person goes under the coach and moves the lever
to go forward or reverse then return to center (neutral).
Personally this scares the hell out of me to consider doing this
but if you have to get it moved this will do it. Understannd also
this coach is very heavy and can crush you.
Bob Janes, Greenville, SC
--- In WanderlodgeForum@yahoogroups.com, "Alan"
wrote:
>
> Well, after many hours this is where I currently am.
>
> 1. I have zero volts going to my ZF ECU.
> 2. The coach won't start. Now I'm pretty sure that's because
> without voltage to my ECU, the coach doesn't know if it's in gear
or
> not. (I can jump my starter solenoid and it starts.)
> 3. I talked to Dan at ZF in Chicago and he was quite helpful. He
> told me how to check voltage on the ZF. BUT he didn't know where
the
> ZF gets it's power off the coach.
> 4. I am getting volts out of my 75amp ignition relay with the key
> turned on.
>
> There are bunches of ZF wires behind the grill in the steering
> column access panel. There are also two silver boxes with what are
> apparently ZF wires going in and out of them. The boxes are about
> 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> located underneath the push-button gear selectors by the driver. I
> don't know if they have anything to do with power.
>
> Questions (If anyone knows):
> 1. Where/how does the ZF get power from the coach?
> 2. Does the power go through the filtered power source under the
> couch?
> 3. What would keep me from getting any power to the ECU?
>
> Tomorrow I'm ordering a full set of electronic drawings, but in the
> mean time my neighbors would appreciate it if I can get the coach
> moved from the street.
>
> Thanks,
> Alan Johnson
> 972.769.2526
> 87FC35
>
Update on ZF trouble 87FC35 - Tom Warner - 09-13-2006 16:26
Gregg you are absolutely correct in the hurt part but I am afraid of
"hurting" the ECU and advised Alan of that tonight. I understand that
a replacement is on the order of $6000...OUCH!. Thats totally insane.
If I had the schematics for the 1987 (I have a few of them but not
the ones Alan needs) that includes the wiring from the dash to the
ECU then I would troubleshoot the problem and correct it rather then
running new wires and bosch relays. I have advised Alan to order the
set of schematics for his specific coach from Earl Davis, about $85
and postage. In fact anyone on this forum that does not have the full
set of factory drawings for his specific coach should buy them. They
are an invaluable aid to keeping your coaches running.
As Alan found out he has at least one burned pin in one of the barrel
connectors that he had to wire around. I dont like to do that
preferring instead to replace the connector or the pins and keeping
everything original if possible. But as we know there are times when
a change is necessary for example installing Bosch 30 amp relays to
repower the headlights so they get full voltage.
Also I would encourage anyone that has a FC model to do the same with
the circuits for the A/C fans and the heat fans. That will get a lot
of the heavy current items out of the dash and eliminate the big
voltage drops. When I do that I also install relay sockets with
pigtails so in the future just have to unplug a bad relay and put in
a new one. I have been buying the Bosch 30 Amp relays for about
$1/each and the sockets for I believe $1.05 or so.
I think Ernies idea is a good one to check the push button
transmission selector to see if there is any corrosion in it. I
believe the transmission shifting problem and the starting problem are related.
Tom Warner
Vernon Center,NY
1985 PT 40
At 12:08 AM 9/14/2006, you wrote:
>Why find it. find a good hot lug and use a ignition wire to open a
>new relay to power the ECU. find out the amp limit and fuse it. Make
>a note on #19 of the change you made. You may have to power the
>relay that cuts off the starter solenoid as we now know that the
>starter solenoid wont power at all without power to the ecu. I know
>it sounds like ducttape and bailing wire advice but if you replace
>the relay supplying the power you may only be repairing a result and
>not a cause. It just sounds to me that fixing your failure will not
>correct the problem.
>
>I dont like to reengineere things. In my field of expertiese, I use a
>hammer. When that hammer wont complete the task, I get a bigger
>one. I think you need the expert advice of JohnF, TomW, CurtS JeffM
>and the other electrical members. This ZF power thing is gonna get
>some one hurt. It would be great to do an upgrade to a bus and keep
>it from developing the "ZF'up"
>
>Gregory O'Connor
>94ptRomolandCa
>
>
>--- In WanderlodgeForum@yahoogroups.com, "Alan"
>wrote:
> >
> > One more thought. I re-looked at the "fix" on the web site for a
> > low-voltage problem. I don't think i've ever found that 12 volt
> > relay for the ZF. I found the 75amp one, but this appears to be
> > another one. ZF wire #19 is nearly impossible to trace. best i
>can
> > tell, it goes under the coach and off into oblivion. ...But my
> > common sense tells me I'm missing that relay and it's probably
> > someplace accessible, I just don't know which one it is. ANY IDEAS
> > ON WHERE THIS RELAY IS?? I'm betting at least 50/50 this is still
> > my problem.
> >
> > Ernie, mine has the push-button gear selector.
> >
> > Bill, your suggestion about checking the barrel connectors was good
> > too. I had a problem there too. I'm not sure how these problems
> > are related, but probably somehow. I had a melted pin in one of
>the
> > connectors. It was the 12v supply to the ignition switch. I'm
> > suspecting it had been going bad with corrosion, and somehow all
> > my "trouble shooting" was the end of it. I corrected that problem.
> >
> > Thank,
> > Alan
> >
> >
> > --- In WanderlodgeForum@yahoogroups.com, "Alan"
> > wrote:
> > >
> > > Well, after many hours this is where I currently am.
> > >
> > > 1. I have zero volts going to my ZF ECU.
> > > 2. The coach won't start. Now I'm pretty sure that's because
> > > without voltage to my ECU, the coach doesn't know if it's in gear
> > or
> > > not. (I can jump my starter solenoid and it starts.)
> > > 3. I talked to Dan at ZF in Chicago and he was quite helpful. He
> > > told me how to check voltage on the ZF. BUT he didn't know where
> > the
> > > ZF gets it's power off the coach.
> > > 4. I am getting volts out of my 75amp ignition relay with the key
> > > turned on.
> > >
> > > There are bunches of ZF wires behind the grill in the steering
> > > column access panel. There are also two silver boxes with what
> > are
> > > apparently ZF wires going in and out of them. The boxes are
>about
> > > 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> > > located underneath the push-button gear selectors by the driver.
>I
> > > don't know if they have anything to do with power.
> > >
> > > Questions (If anyone knows):
> > > 1. Where/how does the ZF get power from the coach?
> > > 2. Does the power go through the filtered power source under the
> > > couch?
> > > 3. What would keep me from getting any power to the ECU?
> > >
> > > Tomorrow I'm ordering a full set of electronic drawings, but in
> > the
> > > mean time my neighbors would appreciate it if I can get the coach
> > > moved from the street.
> > >
> > > Thanks,
> > > Alan Johnson
> > > 972.769.2526
> > > 87FC35
> > >
> >
>
>
>
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>
>
>
>
Update on ZF trouble 87FC35 - Gregory OConnor - 09-14-2006 03:21
Tom, I do remember someone taking a ZF'ed board to a TV shop to make
repairs with ZF factory schematics in hand. The delicate nature of
the electronics is the reason I would 'Glass Fuse' the input power.
Circuit Breakers I think work off of heat (post from a Canadian Tulip
farmer). The more expensive breaker may allow too much amp-draw and
too much damage to generate the heat to trip. The cheap glass are by
design delicate and the hope is they are 'just as sensitive' if
not 'more sensitive' than the component they protect.
If a component on the transmission side of the ecu goes bad and
draws a request of too much amps, will that draw pass and damage the
ecu???
CurtS and I replaced all the wires in my taillight loom. the wires
were black within the jacket and it looked burnt. what causes this???
I wonder what the input power wire to an in-operation zf-ecu looks
like?
GregoryO'Connor
94ptRomolandCa
--- In WanderlodgeForum@yahoogroups.com, Tom Warner
wrote:
>
> Gregg you are absolutely correct in the hurt part but I am afraid
of
> "hurting" the ECU and advised Alan of that tonight. I understand
that
> a replacement is on the order of $6000...OUCH!. Thats totally
insane.
>
> If I had the schematics for the 1987 (I have a few of them but not
> the ones Alan needs) that includes the wiring from the dash to the
> ECU then I would troubleshoot the problem and correct it rather
then
> running new wires and bosch relays. I have advised Alan to order
the
> set of schematics for his specific coach from Earl Davis, about $85
> and postage. In fact anyone on this forum that does not have the
full
> set of factory drawings for his specific coach should buy them.
They
> are an invaluable aid to keeping your coaches running.
>
> As Alan found out he has at least one burned pin in one of the
barrel
> connectors that he had to wire around. I dont like to do that
> preferring instead to replace the connector or the pins and keeping
> everything original if possible. But as we know there are times
when
> a change is necessary for example installing Bosch 30 amp relays to
> repower the headlights so they get full voltage.
>
> Also I would encourage anyone that has a FC model to do the same
with
> the circuits for the A/C fans and the heat fans. That will get a
lot
> of the heavy current items out of the dash and eliminate the big
> voltage drops. When I do that I also install relay sockets with
> pigtails so in the future just have to unplug a bad relay and put
in
> a new one. I have been buying the Bosch 30 Amp relays for about
> $1/each and the sockets for I believe $1.05 or so.
>
> I think Ernies idea is a good one to check the push button
> transmission selector to see if there is any corrosion in it. I
> believe the transmission shifting problem and the starting problem
are related.
>
> Tom Warner
> Vernon Center,NY
> 1985 PT 40
>
> At 12:08 AM 9/14/2006, you wrote:
> >Why find it. find a good hot lug and use a ignition wire to open a
> >new relay to power the ECU. find out the amp limit and fuse it.
Make
> >a note on #19 of the change you made. You may have to power the
> >relay that cuts off the starter solenoid as we now know that the
> >starter solenoid wont power at all without power to the ecu. I
know
> >it sounds like ducttape and bailing wire advice but if you replace
> >the relay supplying the power you may only be repairing a result
and
> >not a cause. It just sounds to me that fixing your failure will not
> >correct the problem.
> >
> >I dont like to reengineere things. In my field of expertiese, I
use a
> >hammer. When that hammer wont complete the task, I get a bigger
> >one. I think you need the expert advice of JohnF, TomW, CurtS
JeffM
> >and the other electrical members. This ZF power thing is gonna
get
> >some one hurt. It would be great to do an upgrade to a bus and keep
> >it from developing the "ZF'up"
> >
> >Gregory O'Connor
> >94ptRomolandCa
> >
> >
> >--- In WanderlodgeForum@yahoogroups.com, "Alan"
> >wrote:
> > >
> > > One more thought. I re-looked at the "fix" on the web site for
a
> > > low-voltage problem. I don't think i've ever found that 12 volt
> > > relay for the ZF. I found the 75amp one, but this appears to be
> > > another one. ZF wire #19 is nearly impossible to trace. best i
> >can
> > > tell, it goes under the coach and off into oblivion. ...But my
> > > common sense tells me I'm missing that relay and it's probably
> > > someplace accessible, I just don't know which one it is. ANY
IDEAS
> > > ON WHERE THIS RELAY IS?? I'm betting at least 50/50 this is
still
> > > my problem.
> > >
> > > Ernie, mine has the push-button gear selector.
> > >
> > > Bill, your suggestion about checking the barrel connectors was
good
> > > too. I had a problem there too. I'm not sure how these
problems
> > > are related, but probably somehow. I had a melted pin in one of
> >the
> > > connectors. It was the 12v supply to the ignition switch. I'm
> > > suspecting it had been going bad with corrosion, and somehow all
> > > my "trouble shooting" was the end of it. I corrected that
problem.
> > >
> > > Thank,
> > > Alan
> > >
> > >
> > > --- In WanderlodgeForum@yahoogroups.com, "Alan"
> > > wrote:
> > > >
> > > > Well, after many hours this is where I currently am.
> > > >
> > > > 1. I have zero volts going to my ZF ECU.
> > > > 2. The coach won't start. Now I'm pretty sure that's because
> > > > without voltage to my ECU, the coach doesn't know if it's in
gear
> > > or
> > > > not. (I can jump my starter solenoid and it starts.)
> > > > 3. I talked to Dan at ZF in Chicago and he was quite
helpful. He
> > > > told me how to check voltage on the ZF. BUT he didn't know
where
> > > the
> > > > ZF gets it's power off the coach.
> > > > 4. I am getting volts out of my 75amp ignition relay with the
key
> > > > turned on.
> > > >
> > > > There are bunches of ZF wires behind the grill in the steering
> > > > column access panel. There are also two silver boxes with
what
> > > are
> > > > apparently ZF wires going in and out of them. The boxes are
> >about
> > > > 4" x 4" x 1". However, I know these aren't the ZF ECU. It is
> > > > located underneath the push-button gear selectors by the
driver.
> >I
> > > > don't know if they have anything to do with power.
> > > >
> > > > Questions (If anyone knows):
> > > > 1. Where/how does the ZF get power from the coach?
> > > > 2. Does the power go through the filtered power source under
the
> > > > couch?
> > > > 3. What would keep me from getting any power to the ECU?
> > > >
> > > > Tomorrow I'm ordering a full set of electronic drawings, but
in
> > > the
> > > > mean time my neighbors would appreciate it if I can get the
coach
> > > > moved from the street.
> > > >
> > > > Thanks,
> > > > Alan Johnson
> > > > 972.769.2526
> > > > 87FC35
> > > >
> > >
> >
> >
> >
> >
> >
> >
> >
> >
> >Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>