| Let me just answer some of my questions here: The pin next to 2P is the SIG and SIG is one that receives speed signal from speed sensor, and 2P sends signal to ECU, is that correct? Yes, 2P is responsible for sending signal to ECU.
Coils inside speedo, what do they exactly do?
Coils just actuate on voltage sent by speed sensor and make the needle move to show you speed. They don't affect speed signal.
Is it possible that something is dead on the board and that is why speed signal isn't getting to ECU?
Yes it is possible! And it could be anything, from bad soldering connection, bad condensator, bad resistor, bad diode. Any component on the circuit can be bad.
How exactly is speed signal transferred to ECU, is the circuit board in any way amplifying it or modifying it?
Speed signal is a two wire analog sign wave, goes speed sensor to the speedo. Speed converts it, and then sends a digital speed signal out to the ECU.
Could I simply reroute speed signal from SIG to 2P pin?
Nope, analog signal to speedo, digital to ECU.
Is it normal to have conductivity through pin 53 on ground wires?
Not 100% sure, but convinced that yes it is. Cluster back circuit board also shows conductivity to ground through them, so I guess that is not coincidences.
Anyway, my speed signal is still not reaching ECU. Removed the needle today and the rest of components, started testing board components. All looks good for except few condensator, but I need to take them out to measure them correctly. In the end I will most likely just replace all the components on the board that I can replace.
DVDBURN (MD), thank you for your offer to refurbish my speedo, but you are one ocean to far away, so I need to get this on my own somehow.
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17:37:36 05/23/13
