Sound Signal Circuit between Radio Receiver and Stereo Component Amplifier

DESCRIPTION

The radio receiver sends a sound signal to the stereo component amplifier through this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier, and then is sent to the speakers.
If there is an open or short in the circuit, sound cannot be heard from the speakers even if there is no malfunction in the stereo component amplifier or speakers.

WIRING DIAGRAM

INSPECTION PROCEDURE

1. CHECK HARNESS AND CONNECTOR (RADIO RECEIVER - STEREO COMPONENT AMPLIFIER)

1. Disconnect the connectors from the radio receiver and stereo component amplifier.

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

   Standard resistance:

   Tester connection	Condition	Specified condition
   L+ - L+	Always	Below 1 Ω
   L- - L-	Always	Below 1 Ω
   R+ - R+	Always	Below 1 Ω
   R- - R-	Always	Below 1 Ω
   SLD - SLD	Always	Below 1 Ω
   L+ - Body ground	Always	10 kΩ or higher
   L- - Body ground	Always	10 kΩ or higher
   R+ - Body ground	Always	10 kΩ or higher
   R- - Body ground	Always	10 kΩ or higher
   SLD - Body ground	Always	10 kΩ or higher

NG	REPAIR OR REPLACE HARNESS OR CONNECTOR

OK
PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE