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Registered
Join Date: Mar 2008
Location: 88 924S in Essex, UK
Posts: 30
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88 924S, 9-pin engine loom connector and pinout.
I've spent a lot a time in the archives trying to find info on this 9-pin connector that I think is the main connector between engine & vehicle loom and could not find anything!. It sits at the back of the engine on top. - See photo. I thought that if I could figure out what is connected to it, it would be a useful point to make diagnostic measuremenets.
 So i've put together the following summary based on Porsche wiring diagram and looking at the connector wiring. Let me know if you see error please or can answer the question marks - like why two oil pressure sensor wires. My numbering... -------- ( 1 4 7 ! ( 2 5 8 ! ( 3 6 9 ! -------- My colours / What i've figured out from wiring diagram. 1 - Green / Ignition Coil 2 - Red/Blue / Unknown - heads to Tacho from wiring diag! 3 - Red/Yellow / DME relay 12V 4 - Blk/Green / HEGO? 5 - Blk/Green / DME Relay return 6 - Blue/white / Oil Pressure sensor ? 7 - Red/Blk / Starter Key Switch 8 - Blue/Yellow / Coolant temp sensor (For gauge, not DME) 9 - Blue/Black / Oil PressureSensor ? The following helped with understanding the colour coding on the bosch wiring diagrams. Sw - black schwarz (shvahrts) Ws - white weiß (vighss) Gr - gray grau (grou) - rhymes with "cow" Rt - red rot (roht) Bl - blue blau (blou) - rhymes with "cow" Ge - yellow gelb (gelp) Gn - green grün (gruun) Br - brown braun (brown) Steve Last edited by sdelasal; 07-07-2009 at 09:22 AM.. |
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06-21-2009, 03:22 AM
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Proprietoristicly Refined
Join Date: Jul 2001
Location: ~Carefree Highway~
Posts: 5,833
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I have not followed a current path, but the oil pressure sensor has 2 wires, one for the oil pressure guage and one for the idiot light. The oil pressure sensor is grounded to block to complete the curcuit.
GL John_AZ 1988 924S + 1987 924S |
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06-21-2009, 05:08 AM
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