Navigation cannot control HVAC by voice command (2017 2018 2019 2020)

Navigation cannot control HVAC by voice command 

NOTE: 

• Check the vehicle battery condition first - Refer to:

  Battery Test (2016 2017 2018 2019 2020)

• If the voice control does not respond with any voice commands, go to : Navigation System Symptom Troubleshooting - Voice control does not work/respond troubleshooting  .
• Make sure that the latest navigation software is installed.
• 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-navigation 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-navigation unit to prevent damaging the CD/DVD player's load mechanism.

   Audio-navigation unit connector A (24P)

   Climate control unit connector B (28P)

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

   Test condition	Vehicle OFF (LOCK) mode
   	Audio-navigation unit connector A (24P): disconnected
   	Climate control unit connector B (28P): disconnected
   Test point 1	Audio-navigation unit connector A (24P) No. 4 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2017), or Audio-Navigation Unit Connector for Inputs and Outputs (2018 2019 2020),
   Test point 2	Climate control unit connector B (28P) No. 9 - Refer to: Climate Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020), .

   Test point 1	Audio-navigation unit connector A (24P) No. 2 - Refer to: Audio-Navigation Unit Connector for Inputs and Outputs (2017), or Audio-Navigation Unit Connector for Inputs and Outputs (2018 2019 2020),
   Test point 2	Climate control unit connector B (28P) No. 10 - Refer to: Climate Control Unit Connector for Inputs and Outputs (2017 2018 2019 2020) .

   Is there continuity?

   YES 

   Replace the climate control unit .

   NO 

   Repair an open in the wire(s).