Tony H.

Alan I just jumped 30 to 87 and the blower came on no speed control but the blower did come on almost like it does when I use to put it in defroster mode. and my key was not on at all when i jumped it. does that tell you anything special, I should know? the selector was in the center position of the head unit when I jumped 30 to 87.

Tony H.

Hey Alan, Still out there???

Tony H.

well Alan, I can tel you this I hooked 30 to 87 and started the car turned on A/c and it blows cold, but when I turn the car off it still keep the blower gouing because it is hooked to 30 which has power all the time with or without key, all of the section of the selector worked properly and the compressor did as well, I had no sped control of the fan it was on high only, but let me say this it blows nice and cold, all I have to do now is find out how to fix the fan speeds and the blower to shut off when I turn the key off. 86 pin must be part of my issue plus the fan speeds for the resister pack are not getting power from the blower switch 0-4, if you don't mind maybe a little more help and I can get it right.

Tony H.

any one else out there that can help until Alan get freed up again what make the relay close from 30 pin to 87 pin on the relay and then open up when you turn the car off.

Randy V

Sorry, I only specialize in grammar and punctuation.



Alan will be back soon.

Alan

OK with the jumper in place seems some things work - so the relay is an issue.

Pin 86 & pin 85 are the coil connections that cause the relay switch terminals between 30 & 87 to close.

For this relay pin 85 is connected directly to ground so pin 86 must go to 12v for it to switch. Seems it probably does not (normally pin 86 is supplied via the head unit and ignition switched power. With the relay out can you verify if Pin 86 has power to it? with ignition & head unit on.

Follow up with the other tests for power at the pins of the blower resistor pack (with the jumper in place).

Alan

WallyP

Tony,

With the jumper between 30 (power) and 87 (load - blower switch, resistor pack, blower motor) the blower should run at all speeds on the blower switch. If it runs only on 4 (high speed), then either the resistor pack has a broken wire or is hooked up incorrectly.

My first suggestion is for you to go back and carefully read every post in this thread. You now understand more than you did, so read every post and try to understand what we are telling you. I think that you may have all of the info that you need to fix the problem.

Tony H.

To Alan and WallyP thanks for your help as for Randy V have a great day? And I hope that grammer was ok for you if not I can say it a different way if you like.
I will go back and read all of the other threads, well (except for Randy V) it really is not much help unless I want to write a book.

Tony H.

Alan I reread your thread on testing the pins of the resister pack and it said I should have power on at least pin 4, well I tested the pack pins withe the jumper runing from 30 to 87 and I only have voltage on pin 8 which used to be 6 (2 black wires) I do not have it on 4 at all or any other pin for that matter. Number 8 pin has been taken out off the pack completely as you said, since I do not need it, it had 2 red wires to it and the wires are still cinnected to the pin it is just sitting outside of the plug for the pack, do I need to seperate the 2 red wires connected to that pin by cutting them?
I just wanted to let you know what I have found out to this point, I do not have power to 86 on the relay plug with the key turn on and going from seperate ground selector is in the center position and blower is on 1.
So from what I have read it seems like you are saying that the head is not feeding my 86 pin to cause the relay to work the blower and the blower switch. *& pin when jumped does run the blower only on high I have looked at the wires in the resister plug and they all look to be in the proper place, but i am gopint to recheck them again. If I am reading the daigram correct the 1 pin is white 4 is red 5 is white and green 7 is wite and blue and 8 formally 6 is black 2 wires. If you can confir that please do. I know it is the week end and people are out injoying their cars, but you never know maybe your there or will see it later. Thanks again.

Tony H.

Alan one last thing I do not have power to 86 with key on and unit on, I rechecked to make sure the wires in the pack plug were in the proper place and they are, and the old 8 pin is not in it at all, 6 is there instead, I think that was the 2 changes you wanted me to make to the plug for the new type resister I got from Roger (1-) to take out old 8 pin and (2-) put in 6 pin where 8 was). If I am wrong please let me know.
I read it twice am I am almost positive that is what I was suppose to do. All other wires and color with corresponding pin numbers are correct in the plug according to the diagram. So it looks like I need to find out why I have no power on 86 pin so it will operate the relay, but even when I jump 30 to 87 I still have no speed control of the fan only on high pin 8 shows power/ vdc which used to be 6.
All of the wires seem to be in the right place so I should have speed control when I jump 30 to 87 please excuse anything I may be repeating, I just want to make sure I have told you what I have found out.
I hope to hear back sometime when you get the chance, I think I am catching on but still have not solved it.
I tried to follow the diagram to see which wire feeds the 86 pin and I think it is the 14 wire of the head unit rear plug red and black which is also the color of G14 but I only learning I could be way off.

the flyin' scotsman

With key on and the HVAC unit NOT set on defrost or off you should have power at terminal 86. If not you have a problem with the head unit or internal temp sensor.

With the jumper in place between terminals 30 and 87 of socket of relay X there should be power on post 4 (red wire) of the connector for the resistor pack. If not there's an wiring issue between the VS VIII connection point and the resistor block.

Did you cut the red/white wire between post 4 and 8 of the resistor block connector?

Tony H.

To the flyin scotsman. when you say cut the wire btween them I am not sure what you mean inside the plug the are and were not connected the 2 wires going to termional 8 originally had 2 red wires to it maybe one of them also had a white sripe on it, I took the whole pin 8 out of the plug, as I thought I was told to do, they did not connect to the pin 4 inside the plug so when you say cut them off of 4 pin I am not sure exactly what is being said since I do not see where they meet pin 4 at all unless it is inside the harness further back away from the plug itself. I think someone maybe Alan said something like it the lume or loupe, if I wer the cut them off at the pin will that be were I should cut them or shopuld one of the wirw on pin 8 say connected? I was told to just remve the whole pin out I don't need it but I did that but nothing or I should say none of the wire to pin have been cut. I do not have pwer to pin 4 so I guess I need to cut the wire of pin 8 somewhere? If there is something I have missed maybe youu can explain I have read and reread all of the threads I do remember one of them saying cut/remove re/whit wie on pin 8 and then it said to just take the whole pin out you don't need it,
But I guess I need to cut the wires as well. please let me know ! I hope I am not ticking people off like Randy V but grammer isn't going to fix the car. I think I am making progress but my typing may not be up to speed for some.

the flyin' scotsman

Understand that the old resistor pack is functionaly different from the new and consequently so is the wiring.

I would suggest you fix the known issue, using the new resisor pack with the old wiring, then if there's further need we'll fix the remainder.

Follow Alan's direction in post #32, do you see all the wires, their colours on the numbered posts of the resistor pack connector?

Tony H.

One other thing for the scotsman, where would the VS Vlll conction piont be located on the car I see it in the diagram it spilts off to the bloer switch and the resister pack.
But I was just wondering where it does that on the car? I am catching on I think but still with helpful people like yourself , Alan and WallyP I ammaking some progress I road home Friday with the air working for the first time even though it only had high but in Florida most of the time you need high anyway., My inside sensor does draw in smoke, so I am back to leaning on the head unit being bad, I got if from 928 worldwide and he said he tried it on his car and it worked but I do not have pwer on 86 in my car, so I wonder if I put the head unit in without disconnecting the battery first mnay have ciaused an issue with the head or the head was not good anyway I trust Mason at 928 but I don't have pwer to 86 so something is wrong. Could I have a pwer issue from ignition to the head unit causinf it not to feed the unit/>
When i test the rear plug of the unit I have pwer on one of the pins in the plug none of the rest of the pin have power just the one somewhere arounf 11-14 in that area i could count it f starting at the rea of the head if that helps you. whren i turn the ignition on I have pwer on others also but I am not sure which pin on that plug feeds 86 on the relay.
In the diagram it looks like it could be any of them they all kook to a big block with lots of circles and again I am neew to diagrams i thought maybe 14 but I could be wrong. Hince the G14 coming from 86 pin maybe 14 of head unit/ Just a guess though. Let me know what you think. Thanks again Tony H.

Tony H.

to answer the question do I see all of the number pins in the pack plug and colors , yes I do and I thought I did just what he said to do remove pin 8 completely and put 6 pin in that position, I did read cut/remove red whit wire connecting pin 8 to pin 4 but I did not see where they connected at all so I just took pin 8 out of the plug as he said and moved the 6 pin to where the 8 pin was. If I need to cut the wires of pin 8 then i will but nothing in the plug fro the resister pack connected them together when I first open the resister plug. no wire going from 8 to 4 unles like i say it conects somewhere else beside in the plug for the resister. Should I just cut the wires of pin 8 and seperate them from the pin?
Right now pin 8 is outside of the pulg for the pack and the 2 wires are connected to the pin. if that makes since to you at all. Thanks