Sound Signal Circuit Between Radio Receiver And Multi-Display Controller

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Sound Signal Circuit between Radio Receiver and Multi-display Controller

DESCRIPTION

This is the sound signal circuit from the radio receiver to the multi-display selector.
HINT:
"Multi-display Controller" refers to the multi-display selector.

WIRING DIAGRAM









INSPECTION PROCEDURE

PROCEDURE

1. CHECK MULTI-DISPLAY SELECTOR





(a) Disconnect the L23 selector connector.
(b) Using an oscilloscope, check the signal waveform between each terminal and the body ground according to the conditions shown in the chart below.
OK:






NG -- CHECK VEHICLE EQUIPMENT
OK -- REPLACE MULTI-DISPLAY SELECTOR
2. CHECK VEHICLE EQUIPMENT
(a) Check if the SDARS system is equipped on the vehicle.

Result





B -- CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT TUNER)
A -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - MULTI-DISPLAY SELECTOR)





(a) Disconnect the F23 receiver connector.
(b) Disconnect the L23 selector 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 ASSEMBLY
4. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT TUNER)





(a) Disconnect the F23 receiver connector.
(b) Disconnect the L39 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 (STEREO COMPONENT TUNER - MULTI-DISPLAY SELECTOR)





(a) Disconnect the L39 tuner connector.
(b) Disconnect the L23 selector 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 STEREO COMPONENT TUNER WITH NORMAL ONE AND CHECK
(a) Replace the stereo component tuner with a normal one and check if the same problem occurs again Removal.
OK:
Same problem does not occur.
NG -- REPLACE MULTI-DISPLAY SELECTOR
OK -- END (STEREO COMPONENT TUNER IS DEFECTIVE)