Mat hiace

there, 

I have a 2011 Toyota Hiace lwb van and the temperature gauge isn’t working at all doesn’t even budge. I’ve tried so far...
 

• temp sensor been replaced
• Thermostat has been replaced
• shorted the sensor to ground (didn’t move the needle at all)
• replace the gauge with a new one (still doesn’t work)
• belled out continuity between the sensor to the ecu - continuity

I’m really Struggling to figure out what’s going on with it I’ve spent just over 1k in mechanic and instrument repair fees any help will be appreciated!