Request Signal Circuit (SAT To Audio)

REQUEST SIGNAL CIRCUIT (SAT TO AUDIO)

Description

Request signal transmits the signal to recognize the connection of satellite radio tuner from satellite radio tuner to audio unit.


Diagnosis Procedure


1. CHECK CONTINUITY REQUEST SIGNAL CIRCUIT

1.Turn ignition switch OFF.
2.Disconnect satellite radio tuner connector and audio unit connector.
3.Check continuity between satellite radio tuner harness connector and audio unit harness connector.





4.Check continuity between satellite radio tuner harness connector and ground.





Is inspection result OK?
YES- GO TO 2.
NO- Repair harness or connector.

2. CHECK AUDIO UNIT

1.Connect audio unit connector.
2.Turn ignition switch ON.
3.Check voltage between audio unit harness connector and ground.





Is inspection result OK?
YES- GO TO 3.
NO- Replace audio unit. Audio Unit.

3. CHECK CONTINUITY REQUEST SIGNAL

1.Turn ignition switch OFF.
2.Connect satellite radio tuner connector.
3.Turn ignition switch ON.
4.Check signal between satellite radio tuner harness connector and ground.





Is inspection result OK?
YES- INSPECTION END
NO- Replace satellite radio tuner. Satellite Radio Tuner.