( TL19E00J10300000000FAAT03 )

Audio System Symptom Troubleshooting - Audio unit power switch will not turn on (No information display and no sound)

1. Measure the voltage between audio/navigation switch panel 24P connector terminal No. 17 and body ground.

Is there about 0.5 V?

YES | - | Substitute a known-good audio/navigation switch panel and recheck. If the symptom/indication goes away, replace the original audio/navigation switch panel. If symptom/indication is still present, replace the audio unit. ■
NO | - | Repair open in the wire between audio/navigation switch panel connector (24P) terminal No.17 and audio unit connector C (12P) terminal No. 5 or check for a short to power. If there is no short to power, substitute a known-good audio unit and retest. If the symptom goes away, replace the original audio unit.■