NOTE:
1. Problem verification 1:
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):
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.
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):
Does the symptom go away?
YES
Replace the original audio unit.
NO
Replace the HDMI cord (USB/HDMI main harness).
5. Determine possible failure area (audio unit, others).
Go into the System Diagnostic Mode, and use the Vehicle Status to check the parking brake signal - Refer to: Audio System Sound Quality Diagnosis, or Audio System Diagnostic Mode (Without Navigation, Display Audio Type (7-inch Screen) ), or Audio System Diagnostic Mode (Without Navigation, Color Audio Type (5-inch Screen) ).
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 (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
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):
Audio unit connector B (20P)
Electric parking brake control unit 30P connector
Is there continuity?
YES
Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
NO
Repair an open in the wire between the audio unit and the electric parking brake control unit.
7. Open wire check (B-CAN_H, B-CAN_L lines):
Gauge control module connector A (32P)
Audio unit connector B (20P)
Is there continuity?
YES
Replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
NO
Repair an open in the wire (s) between the audio unit and the gauge control module.