Audio cannot control HVAC by voice command (Without Navigation)

NOTE: 

• Check the vehicle battery condition first .
• If the voice control does not respond with any voice commands, go to Voice control does not work/respond troubleshooting .
• Check for B-CAN DTCs and resolve them before troubleshooting.
• Check the connectors for poor connections or loose terminals.

1. Problem verification

   -1. Turn the vehicle to the ON mode.

   -2. Pressing the TALK button, then give a voice command "Climate control" clearly in a natural speaking voice.

   Does the climate control system turn on by the voice command?

   YES 

   Intermittent failure, the system is OK at this time.

   NO 

   The failure is duplicated, go to step 2.

2. Determine possible failure area (B-CAN circuit, others)

   -1. Turn the climate control system to on.

   Is the climate control system icon displayed on the ODMD (TM)?

   YES 

   Replace the audio unit .

   NO 

   Go to step 3.

3. Open wire check (B CAN-H line, B CAN-L line)

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

   -2. Disconnect the following connectors.

   NOTE:  Eject the disc before disconnecting the audio unit to prevent damaging the CD/DVD player's load mechanism.

   Audio unit connector A (24P)

   Climate control unit connector A (28P)

   -3. Check for continuity between test points 1 and 2.

   Test condition	Vehicle OFF (LOCK) mode
   	Audio unit connector A (24P): disconnected
   	Climate control unit connector A (28P): disconnected
   Test circuit	B CAN-H
   Test point 1	Audio unit connector A (24P) No. 4 (RED)
   Test point 2	Climate control unit connector A (28P) No. 8 (RED)

   Test circuit	B CAN-L
   Test point 1	Audio unit connector A (24P) No. 2 (WHT)
   Test point 2	Climate control unit connector A (28P) No. 9 (WHT)

   Courtesy of HONDA, U.S.A., INC.

   Is there continuity?

   YES 

   Replace the climate control unit .

   NO 

   Repair an open in the wire (s) between the audio unit and the climate control unit.