hvac control ecu

  1. Gary Chan
    Thread

    2005 Prius – “Check connection to air conditioner” + can’t locate A/C amplifier (HVAC ECU)

    I’m working on a 2005 Prius and getting the “Check connection to air conditioner” message on the MFD. Here’s what I’ve done so far: Checked all...
    Thread by: Gary Chan, Apr 27, 2026 at 4:55 PM, 1 replies, in forum: Gen 2 Prius Care, Maintenance and Troubleshooting
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