[jhmoore]

2018 TRDORP

Trying to diagnose satellite radio loss of signal. Removed the shark fin and didn't see any corrosion/damage. Now checking connectors on back of head unit. Yeah, probably should have done those in the opposite order.

Anyone know which connectors are involved in the satellite radio or have a diagram of what each connector is for?

I've unplugged and reseated each connector, but still would like to give particular attention to whichever is the right one...

Other than reset SiriusXM signal (already done), any other ideas?

[daytonaviolet]

All wires attached to the bottom box.

[jhmoore]

Originally Posted by daytonaviolet

All wires attached to the bottom box.

Thanks, @daytonaviolet ! Do you know what each one does or have a link you could share with info? Why four?

[flyrv9]

Well short of having a schematic, I would disconnect each connector (one at a time) and look for bent, broken or pushed pins / sockets on both the head unit side and connector side. Check that all connections were tight and properly seated.

You can also check continuity of the antenna wire from where it connects to the head unit - to the shark fin. With both ends disconnected - check center conductor to center conductor on both ends with an ohm meter. For this test you will need another wire to complete the loop. Meter should be either zeroed (if it has a zero function) or touch the leads together, record the value and subtract from any reading. You should get close to a dead short; maybe an ohm or 2. Then check center conductor to ground (shield - outside of connector). This should read open. Also look at the center conductors to see they are not damaged or corroded. Check general condition of the cable you can see - any damage, tight bends or kinks.

You can also connect the antenna end and then measure from the head unit end. You should get a resistance value = to the value of the antenna plus the cable. The value of the antenna may be printed on it somewhere. If not call and ask. Then again this might be covered by warranty!

[jhmoore]

Originally Posted by flyrv9

Then again this might be covered by warranty!

Thanks for all the suggestions!

While my 4Runner will be only 2 years old next month, I've been having a bit too much fun and have just shy of 40K miles on her... and I'm told that this is part of the 3 year / 36K warranty...

[nglayton]

Originally Posted by jhmoore

2018 TRDORP

Anyone know which connectors are involved in the satellite radio or have a diagram of what each connector is for?

The XM antenna wire is the plug with the single wire in the center. It looks similar to the shark fin connector you posted earlier....

My guess is one of the 2 in pink circles