Having issue with my radio and second amp - no sound after getting a replacement amp. Decided to check the fuses.

fuses ok.

however when I put the fuse back for the radio the female end that was in the cjb pushed through therefore I was unable to seat the fuse. Now of course no radio.

no option but to pull the cjb?

even if I do could I get the female end to seat and therefore hold the fuse?

ugh

 

No one?

that CJB seems to be a PIA to get to and take out. I don’t even know if I could fix the problem even with it out.

could I fuse tap a new power source to the appropriate wire on the harness?

mine is a SE so I’m seeing that the only source from that fuse is the head unit itself.

I plan on putting in a new head unit and amp (completely new set up) and bypassing the old system completely. Yeah, am aware of the most system but even with it unplugged the functions of everything else seemed fine.

 

I have not opened up a CJB. They are a pain to remove, but not impossible. Takes more time than anything else. You *may* be able to jump the power, cant say. The only stuff on MOST is audio, bluetooth phone (if installed), navigation screen (if installed). If its an SE with limited options, then MOST can pretty much go. Even on a fully equip HSE the MOST can go down and not take anything critical, its jut Infomat.

 

thanks.

I know you say “may”. Is there any reason you can think of it wouldn’t work? Not doubting you, just trying to anticipate issues before they become issues.

no idea what I’ll do should I need to fix the cjb and it can’t open :/

thanks again.

 

FYI. This does work. Fuse tap to the main wire.

Update - it sort of works.

My radio resets like the power has been disconnected. I am wondering if the power to the radio is constant with another wire to "wake it up"? This is the only wire I've cut and connected.

 

The wiring diagram pages 146 thru 155 show the high line radio option.

You can follow along if you want, but it seems that it is NON switched power. Just find a power source that is on all the time and put a 15 amp fuse in line.

BUT if you are interested in where the power does go (so you can check each piece of equipment)
Here is how it flows:

Positive terminal
OUT - C0192-1 (Connector 0192 pin 1) red wire

Battery Junction box
IN - C0632-1 red wire
Link 18E (50 amp)
OUT- C0570-186 brown and grey wire

Central Junction box
IN- C0583-22 Brown and grey wire
inside the CFB it splits to
FUSE 42P -OUT- C0582-22 red wire to amplifier-power-ICE
FUSE 52P -OUT- C0582-41 red wire out to telephone control unit
FUSE 53P- OUT- C0582-38 purple/blue wire to junction SJ131 then audio control unit
FUSE 56P-OUT- C0582-13 blue wire to SJ998 then other things
Relay R249- OUT to FUZE 56P-C0582-13 blue wire to Junction SJ998 and to
FUSE 62P-OUT- C0582-8 red wire to C2443-12/C24444-12 then a brown wire to ???
Relay Solenoid - OUT C0582-34 red and purple wire to Audio head unit C0582-34 ( for control)


Junction SJ998 (all blue wires)
1 lead goes to touchscreen C2819-1
1 lead goes to module-multi-media C2144-18
1 lead goes to TV tuner module C2117-1
1 lead goes to telephone control module C2777-16
1 lead goes to DAB antenna amplifier C2671-1

Junction SJ131 (all purple wires)
1 lead goes to the audio head C1354-11
1 lead goes to Module-Multi-Media C2114-17
1 lead goes to Touch Screen C2819-11


It looks like power goes into the CJB, out to the audio head unit (always on) then the control head controls relay R249 that adds power to SJ 998 which then powers all the other things listed on JS998.
Power is also always on to the Amplifier and telephone units


Hope this helps more than it confuses

Jeff

General disclaimer: I may be wrong

 

Thanks!

Fuse 52P then, by your account, should always be on. I don't have a phone fitted so either it's blank or I can Tap in to it for a constant....

And funny you mention the AMP. I am considering replacing complete and bypassing MOST (as I have an SE, I don't think I'll miss much if anything). Assuming the black/red leads to the original am work, I would have a constant source of power already there. no need to run extras....

 

Or
perhaps not.

have you any idea
what is constant down there? I tried the phone which is not. I believe the amp is but I’m planning on using that as a constant for a new amp.

any ideas? Ignition ?

 

I made an assumption that you had the high line entertainment system.

Page 144 of the wire diagram shows 53P and 69P as full time power

Try fuse 69P as a replacement for 53P

Also since this not a high line, verify that fuse 42P has power.

Let us know how it turns out.

Jeff

 

thanks Jeff. I’m still confused though.
....


So I am at this again after ordering the parts for the radio install (who would have though the dash kit was a hard find and expensive find?)

anyway, I’m still hunt for a constant power source.

I am assuming I can use the existing amp wiring for the power and ground to the unit.

what I need is an constant to supply the radio.

I have a SE, but it’s not base. It has a most loop but not a screen in the dash.

I know it should be apparent, but those fuse suggestions above were not giving me a constant with the ignition off.