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Old 03-20-2009, 12:57 PM   #1 (permalink)
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Date registered: Feb 2009
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Vacuum pump wiring diagram?

Hey guys i'm looking for the wiring diagram for the vacuum pump under the rear seat.

This should be the pump that controls the central locking system.

Every single wire running to the pump has been cut and connected with electrical tape. It's awful. The wires coming out of the pump's harness are all red...then they are all connected to standard MB wires with electrical tape. So if someone has the wiring diagram for that section of the car with the wire colors and such, that would be a huge help.

In other news. I rewired the bose amp back to life. Yet another hack wiring job to make a shitty CD player work on the factory speakers. I got the correct harness, and then rewired the entire harness at the amp. someone just cut all the wires and spliced into them.
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Old 03-20-2009, 04:48 PM   #2 (permalink)
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Quote:
Originally Posted by bazookatooth View Post
Hey guys i'm looking for the wiring diagram for the vacuum pump under the rear seat.

This should be the pump that controls the central locking system.

Every single wire running to the pump has been cut and connected with electrical tape. It's awful. The wires coming out of the pump's harness are all red...then they are all connected to standard MB wires with electrical tape. So if someone has the wiring diagram for that section of the car with the wire colors and such, that would be a huge help.

In other news. I rewired the bose amp back to life. Yet another hack wiring job to make a shitty CD player work on the factory speakers. I got the correct harness, and then rewired the entire harness at the amp. someone just cut all the wires and spliced into them.
If you have alldatadiy.com... will be more than happy to guide you to the diagram for this PSE or send an email to deutschland.mechanix@me.com and one of our team will be happy to email some diagrams for an assistance... may take a couple of days, but will be glad to help. alldatadiy.com has all of the information that our shop WIS and STAR systems also have.

Dutch
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Old 03-20-2009, 05:56 PM   #3 (permalink)
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Post Diagrams... A37: PSE partial data

Quote:
Originally Posted by bazookatooth View Post
Hey guys i'm looking for the wiring diagram for the vacuum pump under the rear seat.

This should be the pump that controls the central locking system.

Every single wire running to the pump has been cut and connected with electrical tape. It's awful. The wires coming out of the pump's harness are all red...then they are all connected to standard MB wires with electrical tape. So if someone has the wiring diagram for that section of the car with the wire colors and such, that would be a huge help.

In other news. I rewired the bose amp back to life. Yet another hack wiring job to make a shitty CD player work on the factory speakers. I got the correct harness, and then rewired the entire harness at the amp. someone just cut all the wires and spliced into them.
Partial electrical diagram connector information for PSE (A37 on diagram's)

This will get you started... note wire color abrv. and connector numbers, etc.

Robert
Attached Thumbnails
Vacuum pump wiring diagram?-94854455.jpg   Vacuum pump wiring diagram?-94854455-1.jpg   Vacuum pump wiring diagram?-94854455-2.jpg   Vacuum pump wiring diagram?-94854455-3.jpg   Vacuum pump wiring diagram?-94854455-4.jpg  

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Old 03-21-2009, 08:01 AM   #4 (permalink)
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wow, thanks a ton. I'll need to buy alldata. seems very usefull
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Old 03-05-2014, 04:29 PM   #5 (permalink)
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Quote:
Originally Posted by bazookatooth View Post
Hey guys i'm looking for the wiring diagram for the vacuum pump under the rear seat.
I think that the diagram for the external connections to the PSE control unit (A37) shown on post #3 is correct, but is too small to be legible.

I have saved this drawing from my WIS on a pdf, which can be readily enlarged to enable the details to be read. Page 4 is from another system that is also connected to A37.

The wires have 2 (or 3) colored stripes, which are abbreviated in English as: RD=red, GN=green, BL=blue, BK=black, YE=yellow, GY=gray, WH=white, BN=brown, PK=pink.

The pins on the circuit diagram are all shown on connector 1. (is there another?)

pin 7 is shown to cct 30. This is unswitched battery voltage. Fused at F4 fuse f11, 20A.
pin 4 is shown to cct 15. This is +12v dc with Ig switch in posn 3 (i.e. Ignition ON) Fused at F4 fuse f3, 20A.
pin 21 is shown to cct 31. This brown wire always goes to chassis earth.

Have the fuses been checked?
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File Type: pdf W140 PSE external cct.pdf (753.7 KB, 189 views)
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