No bus
Thread Starter
Junior Member
Joined: Nov 2011
Posts: 98
Likes: 0
From: Honolulu, hi
Year: 2000
Engine: 4.0 I6
No bus
alright.... im tired of gettin mixed answers.... what should i check for the no bus, no run problem?
ive gotten sever different answers.... check grounds? i did... everything was ok, i need to know what is the one thing that could be causing this... please help
problem:
no bus
no run
shuts off 3-5 seconds
gauges dont work
ive gotten sever different answers.... check grounds? i did... everything was ok, i need to know what is the one thing that could be causing this... please help
problem:
no bus
no run
shuts off 3-5 seconds
gauges dont work
Junior Member
Joined: Aug 2010
Posts: 44
Likes: 0
From: [856] South Jersey
Year: 2001
Model: Cherokee
I also have this problem. It happens intermittenly for me. From what Ive found could be bad BCM,PCM, SKIM, ground connection or keys.
The codes you probably have are p1686 and 1687, which I also have. It could also be something simple as a corroded wire or one that has a slice in it. It will be a ***** to find from what I'm told and usually a costly $$$ repair.
The codes you probably have are p1686 and 1687, which I also have. It could also be something simple as a corroded wire or one that has a slice in it. It will be a ***** to find from what I'm told and usually a costly $$$ repair.
Senior Member
Joined: Aug 2011
Posts: 760
Likes: 6
From: Landers, CA
Year: Several
Model: Cherokee
Engine: 4.0
No Buss usually means the PCM is not getting enough power to be able to read anything.
Check voltages right on the PCM connector - remove connector and clean it.
Remove the top part of the underhood fuse box - clean the corrosion off the connections on the bottom of the relay sockets.
Check voltages right on the PCM connector - remove connector and clean it.
Remove the top part of the underhood fuse box - clean the corrosion off the connections on the bottom of the relay sockets.
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CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
[QUOTE=Juh Juh Jinx;1782441]alright.... im tired of gettin mixed answers....
no run
shuts off 3-5 seconds
/QUOTE]
The pump shuts off? Or the engine stops running? I'd hazard a guess TJ's thinking it might be ASD related.
no run
shuts off 3-5 seconds
/QUOTE]
The pump shuts off? Or the engine stops running? I'd hazard a guess TJ's thinking it might be ASD related.
Junior Member
Joined: Aug 2010
Posts: 44
Likes: 0
From: [856] South Jersey
Year: 2001
Model: Cherokee
CF Veteran
Joined: Aug 2011
Posts: 10,489
Likes: 24
From: Nor-Cal Coast
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Newbie
Joined: May 2012
Posts: 16
Likes: 0
Model: Cherokee
CF Veteran
Joined: Jun 2011
Posts: 2,858
Likes: 1
From: Nor-Cal
Year: 1990
Model: Cherokee
Engine: The venerable 4.0
Because the fact of the matter is no one can perfectly diagnose this problem over the internet. His best shot would be to go through the solutions that have worked with his exact symptoms. Otherwise it turns into a guessing fame.
Newbie
Joined: May 2012
Posts: 2
Likes: 0
Year: 2000
Model: Cherokee
Engine: 4.0
I had this issue with the gauge cluster showing no bus, ended up being the alternator not supplying enough power. Jeep would run and then die. Have you checked the battery voltage? If you have it tested and it shows a ripple then it the alternator.
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