Operation CHARM: Car repair manuals for everyone.

Power Supply and Ground Circuit Check [Satellite Radio Tuner]




Power Supply and Ground Circuit Check [Satellite Radio Tuner]

Regarding Wiring Diagram information, refer to [Mid Audio System: Wiring Diagram [Crew Cab] Mid Audio System [Crew Cab] ] or [Premium Audio System: Wiring Diagram [King Cab] Premium Audio System [King Cab] ].

1. CHECK FUSES

Check that the following fuses of the satellite radio tuner (factory installed) are not blown.






Are the fuses OK?
YES
GO TO 2
NO
If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse [Service Information for Electrical Incident: Circuit Inspection] Service Information for Electrical Incident: Circuit Inspection.

2. POWER SUPPLY CIRCUIT CHECK

1 Turn ignition switch OFF.
2 Disconnect satellite radio tuner (factory installed) connector M41.
3 Check voltage between the satellite radio tuner (factory installed) and ground.










Are the voltage readings as specified?
YES
GO TO 3
NO
- Check connector housings for disconnected or loose terminals.
- Repair or replace harness or connector.

3. GROUND CIRCUIT CHECK

Inspect satellite radio tuner (factory installed) case ground.

Does case ground pass inspection?
YES
Inspection End.
NO
Repair satellite radio tuner (factory installed) case ground.