Climate Control System Symptom Troubleshooting - The blower and the heater controls and the A/C system do not work (2017 2018 2019)

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

NOTE:  Do this troubleshooting procedure only if sent here by symptom troubleshooting index .

1. Fuse check

   -1. Check the following fuse.

   Fuse	No. D9 (10 A)
   Location	Under-dash fuse/relay box

   Is the fuse OK?

   YES 

   Go to step 2.

   NO 

   Replace the fuse, and recheck. If the fuse blows again, repair a short in the No. D9 (10 A) fuse circuit.

2. Open wire check (IG2 A/C line)

   -1. Disconnect the following connector.

   Climate control unit connector A (32P)

   -2. Turn the vehicle to the ON mode.

   -3. Measure the voltage between test points 1 and 2.

   Test condition	Vehicle ON mode
   	Climate control unit connector A (32P): disconnected
   Test point 1	Climate control unit connector A (32P) No. 32
   Test point 2	Body ground

   Is there battery voltage?

   YES 

   The IG2 A/C wire is OK. Go to step 3.

   NO 

   Repair an open in the IG2 A/C wire.

3. Open wire check (GND line)

   -1. Turn the vehicle to the OFF (LOCK) mode.

   -2. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Climate control unit connector A (32P): disconnected
   Test point 1	Climate control unit connector A (32P) No. 28
   Test point 2	Body ground

   Is there continuity?

   YES 

   Replace the climate control unit .

   NO 

   Check for an open in the GND wire. If the wire is OK, check for poor ground at G402.