Audio System - Center display unit does not work(Without Navigation) (2019 2020 2021 2022)
Center display unit does not work
NOTE:
- Check the vehicle battery condition first .
- Check the connectors for poor connections or loose terminals.
- Problem verification
-1. Turn the vehicle to the ON mode.
-2. Check if any information appears on the center display.
Is there any information displayed?
YES
Intermittent failure, the system is OK at this time.
NO
The failure is duplicated, go to step 2.
- Determine possible failure area (audio system, others)
-1. Check if audio information appears on the ODMD (TM) (touch screen).
Is the audio information displayed on the ODMD (TM) (touch screen)?
YES
Go to step 3.
NO
Go to Audio unit power will not turn on (No information display) troubleshooting .
- Determine possible failure area (center display unit power and ground circuit, others)
-1. Shield the center display unit from the sun with your hand, and check that the display is back lit (only the back light is on).
Can you see the back light?
YES
Go to step 7.
NO
Go to step 4.
- Open wire check (+B BACK UP line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Center display unit connector A (12P) -3. Measure the voltage between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Center display unit connector A (12P): disconnected Test circuit +B BACK UP Test point 1 Center display unit connector A (12P) No. 6 (GRN) Test point 2 Body ground Is there battery voltage?
YES
The +B BACK UP wire is OK. Go to step 5.
NO
Repair an open in the wire.
- Open wire check (ACC/RR CAMERA ACC DIODE line)
-1. Turn the vehicle to the ON mode.
-2. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Center display unit connector A (12P): disconnected Test circuit ACC/RR CAMERA ACC DIODE Test point 1 Center display unit connector A (12P) No. 5 (YEL) Test point 2 Body ground Is there battery voltage?
YES
The ACC/RR CAMERA ACC DIODE wire is OK. Go to step 6.
NO
Repair an open in the wire.
- Open wire check (GND line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Center display unit connector A (12P): disconnected Test circuit GND Test point 1 Center display unit connector A (12P) No. 12 (BLK) Test point 2 Body ground Is there continuity?
YES
Replace the center display unit .
NO
Repair an open in the wire or poor ground (G502).
- Shorted wire check (GVIF lines)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connectors.
Audio unit connector L (3P) Center display unit connector B (3P) -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Audio unit connector L (3P): disconnected Center display unit connector B (3P): disconnected Test circuits Connector: Audio unit connector L (3P) Test point 1 Test points 2 GVIF- to GVIF+, SH GVIF No. 1 No. 2, No. 3 GVIF+ to SH GVIF No. 2 No. 3 Is there continuity between any of the terminals?
YES
There is a short in the wires. Replace the affected shielded harness.
NO
The GVIF wires are not shorted in the wires. Go to step 8.
- Open wire check (GVIF lines)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Audio unit connector L (3P): disconnected Center display unit connector B (3P): disconnected Test circuit Test point 1:Audio unit connector L (3P) Test point 2:Center display unit connector B (3P) GVIF- No. 1 No. 1 GVIF+ No. 2 No. 2 SH GVIF No. 3 No. 3 Is there continuity?
YES
The GVIF wires are OK. Go to step 9.
NO
There is an open in the wire(s). Replace affected shielded harness.
- Center display unit check
-1. Substitute a known-good center display unit .
-2. Reconnect all the connectors, and recheck.
Does the symptom go away?
YES
Replace the original center display unit.
NO