Mute Signal Circuit between Radio Receiver and Multi-display Controller
AUDIO / VISUAL: REAR SEAT ENTERTAINMENT SYSTEM: Mute Signal Circuit between Radio Receiver and Multi-display Controller
Mute Signal Circuit between Radio Receiver and Multi-display Controller
DESCRIPTION
The multi-display controller controls the volume according to the mute signal from the radio receiver.
The mute signal is sent to reduce noise and a popping sound generated when switching the mode, etc.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
1. CHECK MULTI-DISPLAY CONTROLLER
(a) Disconnect the R32 controller connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard voltage:
NG -- CHECK SATELLITE RADIO TUNER AND/OR DISC PLAYER
OK -- REPLACE MULTI-DISPLAY CONTROLLER
2. CHECK SATELLITE RADIO TUNER AND/OR DISC PLAYER
(a) Check if the satellite radio tuner and/or disc player are equipped on the vehicle.
Result
D -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)
C -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - REAR SEAT CONSOLE BOX)
B -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY CONTROLLER)
(a) Disconnect the L52 receiver connector.
(b) Disconnect the R32 controller connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:
NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE RADIO RECEIVER
4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)
(a) Disconnect the L52 receiver connector.
(b) Disconnect the R29 tuner 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.
5. CHECK HARNESS AND CONNECTOR (SATELLITE RADIO TUNER - MULTI-DISPLAY CONTROLLER)
(a) Disconnect the R29 tuner connector.
(b) Disconnect the R32 controller 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.
6. REPLACE SATELLITE RADIO TUNER WITH NORMAL ONE AND CHECK
(a) Replace the satellite radio tuner with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE RADIO RECEIVER
OK -- END (SATELLITE RADIO TUNER IS DEFECTIVE)
7. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - REAR SEAT CONSOLE BOX)
(a) Disconnect the L52 receiver 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.
8. CHECK HARNESS AND CONNECTOR (REAR SEAT CONSOLE BOX - MULTI-DISPLAY CONTROLLER)
(a) Disconnect the R16 box connector.
(b) Disconnect the R32 controller 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.
9. 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.
10. 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 RADIO RECEIVER
OK -- END (DISC PLAYER IS DEFECTIVE)
11. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - SATELLITE RADIO TUNER)
(a) Disconnect the L52 receiver connector.
(b) Disconnect the R29 tuner 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.
12. CHECK HARNESS AND CONNECTOR (SATELLITE RADIO TUNER - REAR SEAT CONSOLE BOX)
(a) Disconnect the R29 tuner 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.
13. CHECK HARNESS AND CONNECTOR (REAR SEAT CONSOLE BOX - MULTI-DISPLAY CONTROLLER)
(a) Disconnect the R16 box connector.
(b) Disconnect the R32 controller 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.
14. REPLACE SATELLITE RADIO TUNER WITH NORMAL ONE AND CHECK
(a) Replace the satellite radio tuner with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- INSPECT REAR SEAT CONSOLE BOX
OK -- END (SATELLITE RADIO TUNER IS DEFECTIVE)
15. 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.
16. 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 RADIO RECEIVER
OK -- END (DISC PLAYER IS DEFECTIVE)