E9 D-Jetronic Injectors not Triggering

So - now running and tracking down the short in CSV relay wiring.

Congrats!
 
This shows the connection from the CSV relay terminal to the CSV's plug. 20250916_161135.jpg
Note that the CSV relay as shown on the left comes with an additional connector compared to the main control relay.20250920_101720.jpg
This is showing the diagram for the connection of thermal delay switch (160) to the cold start relay (169).20250920_104914.jpg
Make sure not to mix the connectin with the water temperature sensor.
20250920_104936.jpg
 
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Thanks to this community & SFDON's Lending Library/guidance, the engine started.

For some reason unplugging the CSV, allowed the ECU to trigger the injectors.

@TomHom
Thanks for the info/pics. Verified it is the 5 pronged CSV relay.
Verified connections @ Thermo switch and CSV by wire #.

#19 (30) to ECU verified grounded
#38 (87) to CSV verified grounded. Believe this is normal since its grounding through internals of the CSV?
#40 (85) coolant temp switch verified ground, not sure how this works, bimetallic?
#43 (86) coolant temp switch verified ground, not sure if this is the correct reading.
#44 (86c) to starter 50, verified 12v when starter activated.

Is it common for the diodes in the CSV to fail, could this possibly explain symptoms?

Thanks everyone!
 
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