A/C Signal Circuit Troubleshooting
  1. Measure the voltage between the climate control unit 32P connector terminal No. 20 and body ground.
Is there battery voltage?
YES -
Go to Step 15 .
NO -
Repair open in the wire between the climate control unit and the MICU.■
  1. Turn the ignition switch OFF.
  1. Reconnect the climate control unit 32P connector.
  1. Set the A/C button and fan control switch ON, then turn the ignition switch ON (II).