Audio System Symptom Troubleshooting - HDMI device does not function(Without Navigation, With Display Audio)

HDMI device does not function 

NOTE: 

• Check the vehicle 12 volt battery condition first .
• Check for B-CAN DTCs and resolve them before troubleshooting.
• Check the connectors for poor connections or loose terminals.

• 1. Problem verification 1:

  - 1. Turn the vehicle to the ON mode.

  - 2. Make sure the parking brake is applied, and shift the transmission to P position/mode.

  - 3. Touch the HDMI icon on the Change Source screen.

  Is the Notice screen about the limitation of a function displayed?

  YES 

  The failure is duplicated, go to step 5.

  NO 

  Go to step 2.

• 2. Determine possible failure area (HDMI device, others):

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

  - 2. Connect the customer's HDMI device to a known-good vehicle (same year/trim) that is equipped, and check the HDMI device operation.

  Does the HDMI device work properly in the known-good vehicle?

  YES 

  Go to step 3.

  NO 

  See the Owner's Manual for details about the HDMI device requirements.

• 3. Problem verification 2:

  - 1. On the customer's vehicle, connect the customer's HDMI device to the HDMI port.

  - 2. Turn the vehicle to the ON mode.

  - 3. Check the HDMI device operation in the customer's vehicle.

  Does the HDMI device work properly in the customer's vehicle?

  YES 

  Intermittent failure, the system is OK at this time. Inspect the connectors of the HDMI device, the HDMI port, and the audio unit.

  NO 

  The failure is duplicated, go to step 4.

• 4. Audio unit check (substitution):

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

  - 2. Make sure the customer's HDMI device is off, and disconnect the customer's HDMI device from the HDMI port.

  - 3. Substitute a known-good audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) , and recheck.

  Does the symptom go away?

  YES 

  Replace the original audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

  NO 

  Replace the HDMI cord (USB/HDMI main harness).

• 5. Determine possible failure area (audio unit, others):

  - 1. Go into the System Diagnostic Mode, and use the vehicle Status to check the parking brake signal - Refer to: Audio System Sound Quality Diagnosis Audio System Diagnostic Mode  .

  Does the PARK-VIDEO and the PARK signals change from [0] to [1] when the parking brake is applied?

  YES 

  Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

  NO: If the PARK-VIDEO signal is not changed

  Go to step 6.

  NO: If the PARK signal is not changed

  Go to step 7.

  NO: If the PARK-VIDEO and the PARK signals are not changed

  Troubleshoot the gauge control module circuit .

• 6. Open wire check (PARKING BRAKE SW line):

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

  - 2. Disconnect the following connector.

  Audio unit connector C (20P)

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

  Test condition	Vehicle OFF (LOCK) mode, the parking brake is applied
  	Audio unit connector C (20P): disconnected
  Test point 1	Audio unit connector C (20P) No. 11 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio) Audio Unit Connector for Inputs and Outputs(With Normal Audio)
  Test point 2	Body ground

  Is there continuity?

  YES 

  Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

  NO 

  Repair an open in the wire between the audio unit and the parking brake switch. If the wire is OK, check for parking brake switch and/or parking brake switch ground.

• 7. 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.

  Gauge control module connector A (32P)

  Audio unit connector C (20P)

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

  Test condition	Vehicle OFF (LOCK) mode
  	Gauge control module connector A (32P): disconnected
  	Audio unit connector C (20P): disconnected
  Test point 1	Gauge control module connector A (32P) No. 30
  Test point 2	Audio unit connector C (20P) No. 13 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio) Audio Unit Connector for Inputs and Outputs(With Normal Audio)

  Test point 1	Gauge control module connector A (32P) No. 31
  Test point 2	Audio unit connector C (20P) No. 3 - Refer to: Audio Unit Connector for Inputs and Outputs(With Display Audio) Audio Unit Connector for Inputs and Outputs(With Normal Audio)

  Is there continuity?

  YES 

  Replace the audio unit - Refer to: Audio Unit Removal and Installation(With Display Audio)Audio Unit Removal and Installation(With Normal Audio) .

  NO 

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