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Rx7 88 convertible short in convertible top and ac
Hello to everyone, i have and issue whit the convertible top of my car. The car blew the fuse of the convertible top always when you turn the igniton acc,also my ac blower doesn't do anything and i have no voltage from the circuit breaker of the ac. I have tested everything from the switch disconnected the top motors everything that i think have to do whit the system any other suggestions. Thank you for your attention!.
What is the amperage of the convertible fuse (fuse also powers the cooling fan)? And this fuse should have power w/key to on and not ACC.
Pull the fuse for the top/cooling fan. There are two parts to the slot which the fuse plugs into (they are referred to as tangs). W/key to on one of the two tangs will receive voltage (find out which tangs has the voltage). Then turn the key to ACC and see if the same tang has voltage (actually, check both tangs for voltage w/key to ACC).
The blower motor connects to a plug w/7 wires. One of these wires is Black/Yellow which is the fuse you say is blowing w/key to ACC. The Blue/Yellow wire and or the Green/Red wire in the 7 wire plug would have voltage w/key to ACC. It is possible that your problem lies within one of the two relays related to the fan as the L/Y wire runs to the ex-hi relay and this relay also has the B/Y wire running to it and the other relay has the B/Y wire as well as the G/R wire.
And does the fuse blow if you have the fan unplugged from its 7 wire plug?
What is the amperage of the convertible fuse (fuse also powers the cooling fan)? And this fuse should have power w/key to on and not ACC.
Pull the fuse for the top/cooling fan. There are two parts to the slot which the fuse plugs into (they are referred to as tangs). W/key to on one of the two tangs will receive voltage (find out which tangs has the voltage). Then turn the key to ACC and see if the same tang has voltage (actually, check both tangs for voltage w/key to ACC).
Sorry is whit the key on that i have the short, and nothing in my a/c unit work either i have no voltage in the circuit breaker
Sorry is whit the key on that i have the short, and nothing in my a/c unit work either i have no voltage in the circuit breaker
What is the amperage of the fuse which blows w/key to on? (should be 30 amps)
Unplug the 7 wire plug from the fan and see if the fuse continues to blow w/key to on.
If it continues to blow then take the meter set to continuity and place one lead to a ground source and the other lead to the Black/Yellow wire in the 7 wire plug and see if it rings out. If it does then the wire is accidentally grounded out. Do this test w/the plug to the fan in the unplugged position. And this test is done w/no key.
What is the amperage of the fuse which blows w/key to on? (should be 30 amps)
Unplug the 7 wire plug from the fan and see if the fuse continues to blow w/key to on.
If it continues to blow then take the meter set to continuity and place one lead to a ground source and the other lead to the Black/Yellow wire in the 7 wire plug and see if it rings out. If it does then the wire is accidentally grounded out. Do this test w/the plug to the fan in the unplugged position. And this test is done w/no key.
Sorry but what fan you are talking? The blower ac fan because my car has no radiator electric fan
Ok thank you, i know the fuse of the convertible top is 30 amp and also supplies for ac blower ? Now i have a test light for test purpose in the fuse location
Ok thank you, i know the fuse of the convertible top is 30 amp but also is for ac blower? Now i have a test light for test purpose in the fuse location
If you need to do the continuity test you'll need a multimeter. Don't worry about testing the fuse slot since you corrected yourself earlier and stated the fuse blows w/key to on and not ACC. Just focus on the info contained within post #4. And yes, the fuse powers both the top and the AC blower fan.
If you need to do the continuity test you'll need a multimeter. Don't worry about testing the fuse slot since you corrected yourself earlier and stated the fuse blows w/key to on and not ACC. Just focus on the info contained within post #4.
Whit the test light attached to the fuse location i disconnected the fan and the short still there. Yes i have a multimeter
The fuse has two tangs. One side connects to the B/Y wire. The other side is powered by the ignition switch w/key to on. You need to isolate the short thus the need to test the B/Y wire at the fan plug (when it is unplugged)..
I made the continuity test of the 7 wire and the multimeter ring
If the B/Y wire rings out when performing a continuity to ground test then that confirms the wire grounding out is your problem. This wire, again, comes from the slot for the conv. top, so the wire also feeds the top along w/the wire in the 7 wire plug for the ac fan. You'll need to isolate where the grounding out occurs. You need to look at the wiring diagram so you can isolate the connector FR-02 (located down near the CPU. The plug has 4 corners to it and the wires in the corners are Red/White, Green and a Green/White wire and the 4th corner is blank and has 16 wires in all) so you can narrow down the short. When this plug is unplugged you once again perform the same test to the B/Y wire at the 7 wire fan plug and see if the meter rings out again. If it does not then the ground is isolated after FR-02. If it rings out still then the short is isolated before FR-02 or the wire running to the fan.
If the B/Y wire rings out when performing a continuity to ground test then that confirms the wire grounding out is your problem. This wire, again, comes from the slot for the conv. top, so the wire also feeds the top along w/the wire in the 7 wire plug for the ac fan. You'll need to isolate where the grounding out occurs. You need to look at the wiring diagram so you can isolate the connector FR-02 (located down near the CPU. The plug has 4 corners to it and the wires in the corners are Red/White, Green and a Green/White wire and the 4th corner is blank and has 16 wires in all) so you can narrow down the short. When this plug is unplugged you once again perform the same test to the B/Y wire at the 7 wire fan plug and see if the meter rings out again. If it does not then the ground is isolated after FR-02. If it rings out still then the short is isolated before FR-02 or the wire running to the fan.
If the B/Y wire rings out when performing a continuity to ground test then that confirms the wire grounding out is your problem. This wire, again, comes from the slot for the conv. top, so the wire also feeds the top along w/the wire in the 7 wire plug for the ac fan. You'll need to isolate where the grounding out occurs. You need to look at the wiring diagram so you can isolate the connector FR-02 (located down near the CPU. The plug has 4 corners to it and the wires in the corners are Red/White, Green and a Green/White wire and the 4th corner is blank and has 16 wires in all) so you can narrow down the short. When this plug is unplugged you once again perform the same test to the B/Y wire at the 7 wire fan plug and see if the meter rings out again. If it does not then the ground is isolated after FR-02. If it rings out still then the short is isolated before FR-02 or the wire running to the fan.
I tried to find in the diagram the fr-02 connection but i didn't find anything, also i tried to find the plug that has 4 corners to it and none of the wires match the exact colors in the photos are some of the plugs that i think have to do with the problems
I disconnected all the plugs that i think might be the one that you talk about and checked whit the multimeter and still beep
Wrong plugs. The plug you are looking for is near the CPU and the CPU is next to the fuse box thus you are looking on the wrong side of the car (think driver side kick panel). The diagram of the convertible top shows where FR-02 is located by the way. (and if it doesn't have 16 wires and the corner wires I spoke of then it's not the correct plug!)
Wrong plugs. The plug you are looking for is near the CPU and the CPU is next to the fuse box thus you are looking on the wrong side of the car (think driver side kick panel). The diagram of the convertible top shows where FR-02 is located by the way. (and if it doesn't have 16 wires and the corner wires I spoke of then it's not the correct plug!)
The proof is in the pudding for either it has the proper wires or it does not. Can't really tell by the pic. You could always look at the wiring diagram and it shows 'all' the wires in the plug. Plus the plug houses the B/Y wire at the fan plug. A continuity test would prove beyond a shadow of a doubt whether you have the right plug or not (you know one lead to the B/Y wire at the fan plug and the other lead to the B/Y wire (located between the Red/White and Blue/White wire) in the suspected plug and if it rings out then it must be the plug you are searching for.
In taking a second look at your pic that is clearly not the plug because it doesn't have 16 wires on each side nor do the corner wires match what was told to you. Plus 5 of the 16 wires on either side of the plug are Blue based thus look for a large plug w/a bunch of blue wires might help you in your search. There are also 7 wires in each side that are White w/a stripe or have a White stripe to them. So, look for a bunch of Blue and White.
The proof is in the pudding for either it has the proper wires or it does not. Can't really tell by the pic. You could always look at the wiring diagram and it shows 'all' the wires in the plug. Plus the plug houses the B/Y wire at the fan plug. A continuity test would prove beyond a shadow of a doubt whether you have the right plug or not (you know one lead to the B/Y wire at the fan plug and the other lead to the B/Y wire (located between the Red/White and Blue/White wire) in the suspected plug and if it rings out then it must be the plug you are searching for.
In taking a second look at your pic that is clearly not the plug because it doesn't have 16 wires on each side nor do the corner wires match what was told to you. Plus 5 of the 16 wires on either side of the plug are Blue based thus look for a large plug w/a bunch of blue wires might help you in your search. There are also 7 wires in each side that are White w/a stripe or have a White stripe to them. So, look for a bunch of Blue and White.
Ok i think i find the plug because i did a test from de a/c fan to the b/y wire and it rings, i unplug the conector and still rings when put on ground,
Try and locate the B/Y wire which comes from the convertible top fuse and then try to find where the wire splits off into two separate wires (one feeds the ac fan plug and the other runs to the conv. circuit).
When you locate the split then the easiest thing to do is to to cut one of the two wires after the split so you could isolate which wire is grounded for it's the wire to the fan or to the top. Hopefully it's to the fan for it would be easier to splice in a new wire from the cut wire to the fan plug and just bypass the damaged section of the wire.
Try and locate the B/Y wire which comes from the convertible top fuse and then try to find where the wire splits off into two separate wires (one feeds the ac fan plug and the other runs to the conv. circuit).
When you locate the split then the easiest thing to do is to to cut one of the two wires after the split so you could isolate which wire is grounded for it's the wire to the fan or to the top. Hopefully it's to the fan for it would be easier to splice in a new wire from the cut wire to the fan plug and just bypass the damaged section of the wire.
Ok any idea where i start the search of the split off?
I have a problem finding the split the fuse box have so many wire but in the photo is the fuse box from the wire side, the two wire have continuity with ground but the connection that come from the soft top from the back is ok and the plug that first i have to find near the cpu the female side is ok also
When you unplugged the 16 wire plug known as FR-02 there are two sides to the plug. One is the front side of the harness and the other is the rear side. I thought you already checked the rear side for continuity to ground and the meter ringed, as the rear side runs to the top motors and such.
If FR-02 separates the B/Y wire between the fan B/Y wire and the conv.top B/Y wire then there will only be continuity(not continuity to ground but plain continuity) between the B/Y wire at the fan plug and one of the B/Y wires at unplugged FR-02.
EDIT:
There should be continuity to ground at the fan plug B/Y wire. There should be continuity to ground at the B/Y wire found on front side of FR-02. There should be continuity to ground at the B/Y wire coming off of the back of the fuse box. If that were so and it may not that means the split occurs before FR-02 (speaking of the front side of that connector) and not after it (rear side of FR-02). It is important to know if the split occurs before or after FR-02.
Another thing. There are more than one B/Y wires at the back of the fuse box as there are at least two of them. If you are not certain that you have isolated the proper one then a continuity test would help do that or w/key to on the second B/Y wire would have voltage to it as it is powered by the meter fuse.
10-25-16, 09:23 PM
