1G AC Compressor not engaging with AC switch on

[sebas-1024]

Hello, the issues started a couple of months ago, the AC compressor clutch would only engage if the car was put in drive or reverse, if it was in Park or Neutral it would disengage, I don't think it was an RPM thing since it immediately turned on when I shifted from Parked to Drive with no acceleration, as if some circuit was interrupted when in Park and Neutral. Now the clutch never engages unless I jump it directly, I checked the AC compressor clutch relay and got the following: terminal 4 is receiving 11-12 V from the AC Compressor Control Unit (Figure 2), terminal 2 never gets a ground but reads some resistance (Figures 3 and 4), terminal 3 is receiving Battery Voltage (Figure 5) and terminal 1 has a nice ground. According to the circuit diagram the ground for terminal 2 comes from a ground within the ECU if I'm not mistaken, I suspect my issue lies here somehow.

Should I look at a leaky capacitor inside of the ECU or could it be something simpler?

Thanks in advance for any help!

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Figure 1. AC circuit diagram

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Figure 2. Voltage between Terminal 4 and Battery ground

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Figure 3. Voltage between Terminals 4 and 2

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Figure 4. Continuity reading between Terminal 2 and Battery Ground (it reads 140 ohms?)

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Figure 5. Voltage between terminals 3 and 1