| 1. | Repeat turning the ignition switch ON (II) and OFF to see if the problem appears. Does the problem appear? YES - Go to 2. NO - Operation is normal.n |
| 2. | Check the BUS communication DTC . Check to see if the entire LCD comes on, and goes out. Does it come on and go out entirely? YES - Faulty audio unit.n NO - Go to 3. |
| 3. | Remove the center upper panel, and check that the audio unit connector C (10P) is correctly connected to the navigation sub display. Is it normal? YES - Go to 4. NO - Reconnect the audio unit connector C (10P) and recheck the function. n |
| 4. | Measure voltage between No. 1 and No. 2 terminals of the sub display assembly 10P connector. Is there 5 V? YES - Faulty navigation sub display and audio unit.n NO - Go to 5. |
| 5. | Measure voltage between No. 1 and No. 2 terminals of the audio unit connector C (10P). Is there 5 V? YES - Faulty navigation sub display and audio unit.n NO - Faulty audio unit.n |