Communication Signal Circuit (CONT-SAT)

COMMUNICATION SIGNAL CIRCUIT (CONT-SAT)

Description

Satellite radio tuner and AV control unit are connected with a serial communication. They transmit the operation signal from AV control unit to satellite radio tuner, and transmit the display signal from satellite radio tuner to AV control unit.


Diagnosis Procedure


1. CHECK CONTINUITY COMMUNICATION SIGNAL CIRCUIT

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





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





Is the inspection result normal?
YES- GO TO 2.
NO- Repair harness or connector.
CONT)

2. CHECK COMMUNICATION SIGNAL (SAT (Right Arrow) CONT)

1.Connect satellite radio tuner connector and AV control unit connector.
2.Turn ignition switch ON.
3.Check signal between satellite radio tuner harness connector and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Replace satellite radio tuner. Exploded View.
SAT)

3. CHECK COMMUNICATION SIGNAL (CONT (Right Arrow) SAT)

Check signal between satellite radio tuner harness connector and ground.





Is the inspection result normal?
YES- Replace satellite radio tuner. Exploded View.
NO- Replace AV control unit. Without Navigation.