Blower And Heater Controls And A/C System Do Not Work (Without Climate Control)

The blower and heater controls and the A/C system do not work

Probable cause: HVAC control unit malfunction

Do the HVAC Control Power and Ground Circuit Troubleshooting HVAC Control Power And Ground Circuit Troubleshooting (Without Climate Control)

Also check for

HVAC DTCs How To Troubleshoot The Heating And A/C Systems (Without Climate Control)

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Blown fuse No. 30 (10 A) in the under-dash fuse/relay box

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Faulty blower motor relay

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Poor ground at G401

Also check for

Poor or loose connections at the terminals