Home alot now with my projects

[HKS]

I got the holders off today so i can see the text on the MOFETs
IC18 : 62971 6611 MAL 70500FB CS0207C
Q25: 76419P Y2 08 F ABN
Q34: 76419P Y2 08 F ABN
Q21: 5125FE I (Diodsign) R 216G OD41
Q32: 5125FE I (Diodsign) R 216G OD31
Q29: 5125FE I (Diodsign) R 216G OD41
Q26: 5125FE I (Diodsign) R 216G OD31
Q31: 5125FE I (Diodsign) R 216G OD41
Q35: RF3505 I (Diodsign) R 213G 08A5
Q28: 5124GE I (Diodsign) R 140E 2300
Q36: IRF 5305 I (Diodsign) R 213G 08 A5 (may be a regulator)
i think it is a diod sign between the I and R
see picture
D3DFEFC9-B29F-467B-9E8A-880F22F9A561.png

OK Fredrick.
1 How did you get the black steel holders off? And how do you propose to get them back on.
I know Swedes are very smart and I would like to see if your method is better than (German) mine.

2 The numbers are meaningless but useful since I do not have access to the FEM manufacturers catalog.
Once I determine that one (MOSFET) transistor is N or P type then I can determine that the other ones with the same part number are also an N or P transistors.
I can then recommend replacement MOSFET transistors.

3 Fredrick, do you have the time to find where each of the MOSFETs Drain (middle unmarked pin) pins go to what pin on which connector?
It is doable but time consuming and 3 or 4 hands may be better than 2 when holding the Ohm Meter probes. Unless you can find way to
clip to each male connector pin you are testing.

Hermann
P.S. The diode design means International Rectifier Corporation, Manufacturer of the part.
Also, I could determine which pins you need to connect to by looking at the FEM drawing.
Stand By

[Fredrik73]

Fredrick,

OK I just remembered. I do not have a schematic of the FEM. If you have the electrical service book like mine, then this is how you reverse engineer it:
Get an Ohm Meter with sharp pin test leads. You need to break through the clear coating applied to all components.

The MOSFETs transistors have Gate and Source marked as G and S. The Drain pin is in the middle and is not marked. That is the one you want to connect to most of the time.
The power window MOSFETs are N Channel since they apply a ground to operate (just like tail lights and headlights), go ahead and measure from pin 1 and/later pin 2 of FEM connector C201G.

From pin 1 and later pin 2 measure a short or very low resistance to all 11 MOSFETS Drain (the unmarked middle pin).
Locate which Q # (like Q21 etc) is associated with pins 1 and pin 2 of FEM connector C201G. This connector has 4 big pins to handle FEM power and Driver's Power window.

After you have found which Q numbers correspond to C201G pins 1 and 2, let me and all of us know.

When I have time I will try to identify all the other MOSFETS and recommend replacement part numbers and sources. The lights should be easy. All the N channel transistors should be the same. So far, I have only found two P channel circuits, dash lights and power steering solenoid.

Time to stop information overload. To be continued.
Hermann

Oh this makes me want to get out in the garage right now but its night here so i have to so it tomorrow, it sounds like thats the one making problem.
i Will tell you all when i have tested it
thank you Hermann

[Fredrik73]

Can they be custom built and ordered?

Nice birdhouse
a hole village for birds
/Fredrik

[Fredrik73]

Gene,

When complete, I will cut and paste and put it all together in the how to fix it thread.
HKS

If this is not going well i need help to find a new FEM

[Fredrik73]

om Hoping to find all new and replace them

[Fredrik73]

Ok I will look them up and tell you what each one does.
Hermann
Q35 is power steering and is PMOS MOSFET positive.

I got the holders off today so i can see the text on the MOFETs
IC18 : 62971 6611 MAL 70500FB CS0207C
Q25: 76419P Y2 08 F ABN
Q34: 76419P Y2 08 F ABN
Q21: 5125FE I (Diodsign) R 216G OD41
Q32: 5125FE I (Diodsign) R 216G OD31
Q29: 5125FE I (Diodsign) R 216G OD41
Q26: 5125FE I (Diodsign) R 216G OD31
Q31: 5125FE I (Diodsign) R 216G OD41
Q35: RF3505 I (Diodsign) R 213G 08A5
Q28: 5124GE I (Diodsign) R 140E 2300
Q36: IRF 5305 I (Diodsign) R 213G 08 A5
i think it is a diod sign between the I and R
see picture
D3DFEFC9-B29F-467B-9E8A-880F22F9A561.png

[007Cruiser]

Gene,

When complete, I will cut and paste and put it all together in the how to fix it thread.
HKS

Excellent

[HKS]

I think you should have a whole new thread under “How to fix it” so that future people will be able to find this important information.

Gene,

When complete, I will cut and paste and put it all together in the how to fix it thread.
HKS

[wcoates]

Lots and lots of landscaping and THEN gone birdie by building Bird House.jpgBird House2.jpg bird houses for Claudia and family!

Can they be custom built and ordered?

[007Cruiser]

I think you should have a whole new thread under “How to fix it” so that future people will be able to find this important information.

[HKS]

Same same but different hihihi

Fredrick,

OK I just remembered. I do not have a schematic of the FEM. If you have the electrical service book like mine, then this is how you reverse engineer it:
Get an Ohm Meter with sharp pin test leads. You need to break through the clear coating applied to all components.

The MOSFETs transistors have Gate and Source marked as G and S. The Drain pin is in the middle and is not marked. That is the one you want to connect to most of the time.
The power window MOSFETs are N Channel since they apply a ground to operate (just like tail lights and headlights), go ahead and measure from pin 1 and/later pin 2 of FEM connector C201G.

From pin 1 and later pin 2 measure a short or very low resistance to all 11 MOSFETS Drain (the unmarked middle pin).
Locate which Q # (like Q21 etc) is associated with pins 1 and pin 2 of FEM connector C201G. This connector has 4 big pins to handle FEM power and Driver's Power window.

After you have found which Q numbers correspond to C201G pins 1 and 2, let me and all of us know.

When I have time I will try to identify all the other MOSFETS and recommend replacement part numbers and sources. The lights should be easy. All the N channel transistors should be the same. So far, I have only found two P channel circuits, dash lights and power steering solenoid.

Time to stop information overload. To be continued.
Hermann

[ISSYRO]

Lots and lots of landscaping and THEN gone birdie by building Bird House.jpgBird House2.jpg bird houses for Claudia and family!

[HKS]

here are the MOFETS i wonder about
what they do and what kind it is so i can change them if i find any one faulty
Fredrik

IMG_0603.JPG

Ok I will look them up and tell you what each one does.
Hermann
Q35 is power steering and is PMOS MOSFET positive.

[Fredrik73]

Same same but different hihihi

[007Cruiser]

here are the MOFETS i wonder about
what they do and what kind it is so i can change them if i find any one faulty
Fredrik

IMG_0603.JPG

I’m impressed! I wouldn’t know a MOSFET from a ratchet.