No volts at main relay(no click)
12-13-02, 08:34 AM
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No volts at main relay(no click)
Had to have the car towed home the other nite....
so started testing with Haillers diag. on an old thread
found so far... 12v waiting at main relay, for the relay
to pickup..good.
15 amp fuse ok inside car and 12v here with ign on...
removed 15amp fuse turned on ignition Then put in
fuse to see if the circuit opening relay could be heard
nothing..(would I hear it where is it)
Im stuck now REALLY stuck...
On the diag. it loks like one wire.cant be broke?
all I did was put the retractor fuse in the spare slot by mistake in the dark for half a second.
the diag. Im on is from the Haynes and colours dont
match mine on some wires.
please help if you have any ideas even if they sound
silly Big thanks to anyone whos read all this
Paul..91 coupe TII
so started testing with Haillers diag. on an old thread
found so far... 12v waiting at main relay, for the relay
to pickup..good.
15 amp fuse ok inside car and 12v here with ign on...
removed 15amp fuse turned on ignition Then put in
fuse to see if the circuit opening relay could be heard
nothing..(would I hear it where is it)
Im stuck now REALLY stuck...
On the diag. it loks like one wire.cant be broke?
all I did was put the retractor fuse in the spare slot by mistake in the dark for half a second.
the diag. Im on is from the Haynes and colours dont
match mine on some wires.
please help if you have any ideas even if they sound
silly Big thanks to anyone whos read all this
Paul..91 coupe TII
12-13-02, 08:45 AM
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Main relay is right behind the trailing coil on the drivers side. It does make a clicking noise when it opens. You can remove it from the car by taking out the one bolt on top and pulling the plug out of the bottom. Then go by the haynes manual to test it. You can hook direct current up to it to see if it works.
12-13-02, 08:56 AM
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thanks but done that bit ..tested the Main relay and all that, and its fine just cant get the 12volts to it.
The one I cant find is the circuit opening relay inside
the car (I think)
thanks Paul..
The one I cant find is the circuit opening relay inside
the car (I think)
thanks Paul..
12-13-02, 11:49 AM
#4
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The circuit opening relay is inside the car. Above the steering wheel.
CAUTION, CAUTION, CAUTION, CAUTION........Hailers only has jpg'd series four schematics in the past. Never a series five.
That said, they are probably close to the same.
What does your car do exactly???? I know it won't start, but does it crank????
If it cranks, but not start, can you go to the little white plug that goes to the LEAD coil assy, and disconect the plug and see if you have 12v at the black/yellow wire???Key to ON.
CAUTION, CAUTION, CAUTION, CAUTION........Hailers only has jpg'd series four schematics in the past. Never a series five.
That said, they are probably close to the same.
What does your car do exactly???? I know it won't start, but does it crank????
If it cranks, but not start, can you go to the little white plug that goes to the LEAD coil assy, and disconect the plug and see if you have 12v at the black/yellow wire???Key to ON.
12-13-02, 12:33 PM
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If it dose not turn over try to bypass the ignition and go directly to the starter motor usin jumper cables.
My 86 did the same thing a while back. After I bypassed the ign. and went direct to the starter it started and has not given me any trouble to date.
Maybe this reset something in the CPU.
GOOD LUCK
My 86 did the same thing a while back. After I bypassed the ign. and went direct to the starter it started and has not given me any trouble to date.
Maybe this reset something in the CPU.
GOOD LUCK
12-13-02, 01:01 PM
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The car does crank o.k.
All lights
all everything, except 12v to pick/drive relay
have the steady 'waiting' 12v on both pins at the MAIN
relay.
Is there anything between the 15amp fuse and the
main relay 2pin conector I wonder.
All lights
all everything, except 12v to pick/drive relay
have the steady 'waiting' 12v on both pins at the MAIN
relay.
Is there anything between the 15amp fuse and the
main relay 2pin conector I wonder.
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12-13-02, 01:27 PM
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Neutral safety switch maybe? FC3S.org has the factory service manual online with wiring diagrams. They only have the full diagram for the series 4 but most of it is identical. The haynes manual has a simple diagram. I have been having a hard time reading those diagrams, but maybe you will have better luck. They are refered to as "FSMs."
So you have power to the starter but no spark? Are you sure you have fuel? What led you to suspect the main relay in the first place? Maybe a little background information on your situation would help.
In case you haven't figured it out yet, there are numerous reasons why these cars refuse to start. Learning why you are focusing on this area might help rule out other possibilities.
So you have power to the starter but no spark? Are you sure you have fuel? What led you to suspect the main relay in the first place? Maybe a little background information on your situation would help.
In case you haven't figured it out yet, there are numerous reasons why these cars refuse to start. Learning why you are focusing on this area might help rule out other possibilities.
12-13-02, 02:21 PM
#9
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All right. Turns over. Then you MUST go to the small white plug on the LEAD coil assy(one in front of the left strut tower) and see if it has the 12v on the black/yellow wire. Should be a two pin plug. Don't worry about the other wire right now. Just look for the 12v on the B/Y wire. ( I'M counting heavily on the series five having the same colored wires at the plug.)
Actually, three of the wires on the MAIN RELAY should have 12v. Not the two prong plug, but the other with four sockets.
On the four socket one, the black/white should have 12v when key is to start, the white blue and black/green all the time.
Concentrate on the small white plug for the LEAD coil right now and write back if you get the chance.
Actually, three of the wires on the MAIN RELAY should have 12v. Not the two prong plug, but the other with four sockets.
On the four socket one, the black/white should have 12v when key is to start, the white blue and black/green all the time.
Concentrate on the small white plug for the LEAD coil right now and write back if you get the chance.
12-13-02, 03:05 PM
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I actually read your first post this time. So the 15amp fuse is good? And there is 12v at the 15amp fuse?? But there is not 12v at the main relay where the 15amp fuse feeds the main relay? Yeah. Thats what the post said. You might put the meter on ohms, then put one lead on the feed FROM the 15amp fuse and the other lead on the wire that gets the 12v at the MAIN RELAY. The black/white one by my schematic(hope that is the same on your series). Should read .1 ohm or less. Off to work now.
12-15-02, 01:34 PM
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wow this forum moves quick...
so I ve run a wire between fuse (15A) and bw wire on 2pin main relay conector 11kohms in the loop!
now were cooking..
right found the c,ct. opening relay and the BW wire
and I m going to trace the wires out through the loom
even if I have to cut the car in half.
Im thinking about putting on a 'false' feed on now
to see what happens but I,m worried about the feed going back to the c'ct opening relay if there could be a
insulation brakedown somewhere..
Hailers just a Q. for you please if your still on this one
do you know what the
A-----------------------------------------------------
2-----------------------------------------------------
1-----------------------------------------------------
S-----------------------------------------------------
B -----------------------------------------------------
is about page(s)288-296 Haynes I assume its the loom
but its vauge cant even find the Bat?
anti theft device did Mazda only fit this on the starter
c,ct.....dam is there a cut in the ignition c'ct between
THAT 15A and the relay feed?
sorry so long but with your help Im getting somewhere
now thanks so far
Paul...
so I ve run a wire between fuse (15A) and bw wire on 2pin main relay conector 11kohms in the loop!
now were cooking..
right found the c,ct. opening relay and the BW wire
and I m going to trace the wires out through the loom
even if I have to cut the car in half.
Im thinking about putting on a 'false' feed on now
to see what happens but I,m worried about the feed going back to the c'ct opening relay if there could be a
insulation brakedown somewhere..
Hailers just a Q. for you please if your still on this one
do you know what the
A-----------------------------------------------------
2-----------------------------------------------------
1-----------------------------------------------------
S-----------------------------------------------------
B -----------------------------------------------------
is about page(s)288-296 Haynes I assume its the loom
but its vauge cant even find the Bat?
anti theft device did Mazda only fit this on the starter
c,ct.....dam is there a cut in the ignition c'ct between
THAT 15A and the relay feed?
sorry so long but with your help Im getting somewhere
now thanks so far
Paul...
12-15-02, 01:55 PM
#12
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Oh darn. I don't have a series five schematic at home. Its just the way the series five schematics show the path of power for a given circuit. The series four jpg that I posted does not use that type of way of describing the electrical path to the fuses. Sorry 'bout that.
Lets see how close your series five is to the series four.On the MAIN RELAY PLUG, there are two connectors. One round. It has a Black and a Black and White wire. The other plug has four sockets. One is White with a blue stripe, one is black with a green stripe, and a third is black with a white stripe and the last is black with a yellow stripe.
So, does your car have the same color wires????? If not, I need to drop out on this because I don't have access to a series five schematic.
Lets see how close your series five is to the series four.On the MAIN RELAY PLUG, there are two connectors. One round. It has a Black and a Black and White wire. The other plug has four sockets. One is White with a blue stripe, one is black with a green stripe, and a third is black with a white stripe and the last is black with a yellow stripe.
So, does your car have the same color wires????? If not, I need to drop out on this because I don't have access to a series five schematic.
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