Sound Signal Circuit Between Navigation Receiver Assembly and Television Display Assembly

NAVIGATION: NAVIGATION SYSTEM: Sound Signal Circuit between Navigation Receiver Assembly and Television Display Assembly

Sound Signal Circuit between Navigation Receiver Assembly and Television Display Assembly

DESCRIPTION

The television display assembly sends an RSE sound signal to the navigation receiver assembly 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, navigation receiver assembly or speakers.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK HARNESS AND CONNECTOR (NAVIGATION RECEIVER ASSEMBLY - TELEVISION DISPLAY ASSEMBLY)





(a) Disconnect television display assembly connector Q13 and navigation receiver assembly connector E15.





(b) 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.
2. INSPECT TELEVISION DISPLAY ASSEMBLY





(a) Reconnect television display assembly connector Q13.
(b) Check the waveform according to the conditions in the table below.
Standard resistance:






NG -- REPLACE TELEVISION DISPLAY ASSEMBLY
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE