Both Fans Do Not Run At High Speed With The A/C On (But Both Fans Run At Low Speed And The A/C Compressor Operates

Both fans do not run at high speed with the A/C on (but both fans run at low speed and the A/C compressor operates with the A/C on)

ECT troubleshooting: ECT sensor 2 circuit low voltage P2184, ECT sensor 2 circuit high voltage P2185

Also check for

Powertrain DTCs Initial Inspection and Diagnostic Overview

Also check for

Poor or loose connections at the terminals

Cleanliness and tightness of all terminals