DESCRIPTION
The No. 1 stereo jack adapter assembly sends the sound signal from an external device to the radio receiver assembly via this circuit.
The sound signal that has been sent is amplified by the stereo component amplifier assembly 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 assembly, radio receiver assembly or speakers.
WIRING DIAGRAM
PROCEDURE
1. | CHECK HARNESS AND CONNECTOR (RADIO RECEIVER ASSEMBLY - NO. 1 STEREO JACK ADAPTER ASSEMBLY) |
(a) Disconnect the J148 radio receiver assembly connector.
(b) Disconnect the J152 No. 1 stereo jack adapter assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition | Specified Condition |
---|---|---|
J148-14 (ADPG) - J152-2 (ADPG) | Always | Below 1 Ω |
J148-10 (AGND) - J152-7 (AGND) | Always | Below 1 Ω |
J148-12 (VAR+) - J152-6 (VAR+) | Always | Below 1 Ω |
J148-11 (VAL+) - J152-1 (VAL+) | Always | Below 1 Ω |
J148-13 (VA-) - J152-5 (VA-) | Always | Below 1 Ω |
J148-14 (ADPG) or J152-2 (ADPG) - Body ground | Always | 10 kΩ or higher |
J148-10 (AGND) or J152-7 (AGND) - Body ground | Always | 10 kΩ or higher |
J148-12 (VAR+) or J152-6 (VAR+) - Body ground | Always | 10 kΩ or higher |
J148-11 (VAL+) or J152-1 (VAL+) - Body ground | Always | 10 kΩ or higher |
J148-13 (VA-) or J152-5 (VA-) - Body ground | Always | 10 kΩ or higher |
OK | PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
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