Sound Signal Circuit between Multi-media Interface ECU and Television Display Assembly

AUDIO / VIDEO: REAR SEAT ENTERTAINMENT SYSTEM: Sound Signal Circuit between Multi-media Interface ECU and Television Display Assembly
- Sound Signal Circuit between Multi-media Interface ECU and Television Display Assembly

DESCRIPTION

This is the sound signal circuit from the television display assembly to the multi-media interface ECU.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MULTI-MEDIA INTERFACE ECU

(a) Disconnect the D67 multi-media interface ECU connector.





(b) Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions, as shown in the chart below.

Signal Waveform:





Text in Illustration





NG -- CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - TELEVISION DISPLAY)

OK -- REPLACE MULTI-MEDIA INTERFACE ECU Removal

2. CHECK HARNESS AND CONNECTOR (MULTI-MEDIA INTERFACE ECU - TELEVISION DISPLAY)

(a) Disconnect the D67 multi-media interface ECU connector.

(b) Disconnect the U1 television display assembly connector.

(c) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Problem Symptoms Table