Audio System Symptom Troubleshooting - HDMI device does not function(With 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-navigation unit.
NO
The failure is duplicated, go to step 4.
- 4. Audio-navigation 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-navigation unit , and recheck.
Does the symptom go away?
YES
Replace the original audio-navigation unit .
NO
Replace the HDMI cord (USB/HDMI main harness).
- 5. Determine possible failure area (audio-navigation unit, others):
- 1. Go into the System Diagnostic Mode, and use the vehicle Status to check the parking brake signal .
Does the PARK-VIDEO and the PARK signals change from [0] to [1] when the parking brake is applied?
YES
Replace the audio-navigation unit .
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
- 6. Open wire check (PARKING BRAKE SW line):
- 1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Disconnect the following connector.
Audio-navigation 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-navigation unit connector C (20P): disconnected Test point 1 Audio-navigation unit connector C (20P) No. 11 Test point 2 Body ground Is there continuity?
YES
Replace the audio-navigation unit .
NO
Repair an open in the wire between the audio-navigation 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-navigation 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-navigation unit connector C (20P): disconnected Test point 1 Gauge control module connector A (32P) No. 30 Test point 2 Audio-navigation unit connector C (20P) No. 13 Test point 1 Gauge control module connector A (32P) No. 31 Test point 2 Audio-navigation unit connector C (20P) No. 3 Is there continuity?
YES
Replace the audio-navigation unit .
NO
Repair an open in the wire(s) between the audio-navigation unit and the gauge control module.