Sound Signal Circuit between Multi-display Controller and Disc Player Controller

AUDIO / VISUAL: REAR SEAT ENTERTAINMENT SYSTEM: Sound Signal Circuit between Multi-display Controller and Disc Player Controller

Sound Signal Circuit between Multi-display Controller and Disc Player Controller

DESCRIPTION

This is the sound signal circuit from the disc player to the multi-display controller.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MULTI-DISPLAY CONTROLLER





(a) Disconnect the R32 controller 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:






NG -- CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - REAR SEAT CONSOLE BOX)
OK -- REPLACE MULTI-DISPLAY CONTROLLER
2. CHECK HARNESS AND CONNECTOR (MULTI-DISPLAY CONTROLLER - REAR SEAT CONSOLE BOX)





(a) Disconnect the R32 controller connector.
(b) Disconnect the R16 box connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.
3. INSPECT REAR SEAT CONSOLE BOX





(a) Disconnect the box connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE REAR SEAT CONSOLE BOX
OK -- Continue to next step.
4. REPLACE DISC PLAYER WITH NORMAL ONE AND CHECK
(a) Replace the disc player with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY CONTROLLER
OK -- END (DISC PLAYER IS DEFECTIVE)