TFT LCD Display Freezes And Does Not Accept Any Operation Entry

Probable cause:

External device malfunction/influence, malfunction in cooperative control with or communication with the unit body and CCM.

CHECK RESTARTING DISPLAY .
1. Turn the ignition switch to OFF.
2. Wait for at least 3 minutes after the combination display turned off.
3. Turn the ignition switch to ON.
Is the screen freeze eliminated?

Yes: Go to 4.

No: Go to 2.
REMOVE OTHER MEDIA OR EXTERNAL DEVICES .
1. Turn the ignition switch to OFF.
2. Remove the external devices connected to USB or Bluetooth.
Is the screen freeze eliminated?

Yes: Go to 3.

No: Go to 5.
CHECK OTHER EXTERNAL DEVICE CONNECTION .
1. To identify the faulty external device, individually connect the external devices that were disconnected when the screen freeze was eliminated.
2. Replace the identified device with the one that has the same performance.
3. Turn the ignition switch to ACC.
Does the screen freeze occur?

Yes: Go to 4.

No: The external device may be defective.
CHECK OPERATION PROCEDURE .
1. Ask the user how the screen was operated when the screen freeze occurred.
2. Operate in the same operation procedure.
Does the screen freeze occur?

Yes: Go to 5.

No: The circuit has returned to a normal condition at this time. Reproduce the failure, and then perform the diagnosis.
CHECK ENVIRONMENTAL CONDITION .
Check if any external device which emits strong electromagnetic waves and noises, such as a radio antenna, is installed inside the vehicle.

Is there an external device?

Yes: Remove the external device, Go to 2.

If the fault is not fixed, Go to 6.

No: Go to 6.
INITIALIZE COCKPIT CONTROL MODULE .
Initialize the cockpit control module. Ref. to COCKPIT CONTROL (DIAGNOSTICS)>WORK SUPPORT .

Is the screen freeze eliminated?

Yes: Go to 4.

If the screen freeze occurs again, replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .

No: Replace the combination meter. Ref. to INSTRUMENTATION/DRIVER INFO>COMBINATION METER .