Could this be a faulty TIPM?

Donna

New Member
Joined
Feb 21, 2020
Messages
11
Location
Miami, FL
Hello
I have a 2009 JK. I have a problem that started few months ago. At first it was intermittent, now it's constant.
The dashboard lights up, the speedometer doesn't work, the windshield wipers turn on, the headlights turn on, AC blows warm and the fuel gauge drops to empty. From everything I've seen on here, it sounded like the tipm. I got a new one and after following your instructions. Everything was fine, for 5 miles only, then came back. While dealing with this, I took care of two recalls. One for the passenger airbag inflator and the other was the airbag clock spring. Again everything was clear for five miles before coming back on.

I even left the terminals tied together overnight and unplugged and plugged in the tipm again, nothing. I also replaced my battery

Is there something else I should be looking at?

Thanks for any guidance.

20200129_134908_HDR.jpg
 

Chris

Administrator
Staff Member
Joined
Sep 28, 2015
Messages
31,028
Location
Florence, AZ
I'll be honest, electrical issues like this are beyond me. I'm willing to do almost any mechanical work myself, but when it comes to electrical diagnostics like this, I always take it to a reputable shop that has the knowledge and the skills to troubleshoot it, as it beats throwing parts at it.
 

Ballermaris

Member
Lifetime Supporting Member
Joined
Feb 21, 2020
Messages
99
Location
Atlanta GA
Have you looked at the Transmission Control Module (TCM) as the culprit? Mine went out and it was sudden too. The dealer had to replace the entire unit along with the wiring harness to be safe. For the record, there are 92 circuits in a 2018 Wrangler JK that are controlled by a TCM.

That is the option to look at. By the way, is the alert chime going nuts too?
 
OP
D

Donna

New Member
Joined
Feb 21, 2020
Messages
11
Location
Miami, FL
I have it at a shop right now. They are stumped too. I'll mention the TCM to them. They're also talking about the CAN bus and cluster.
Yes, the alert chime is going nuts.
Thanks
 

Ballermaris

Member
Lifetime Supporting Member
Joined
Feb 21, 2020
Messages
99
Location
Atlanta GA
I have it at a shop right now. They are stumped too. I'll mention the TCM to them. They're also talking about the CAN bus and cluster.
Yes, the alert chime is going nuts.
Thanks
Yeah, its the TCM and a wiring harness. The circuits will have to be individually checked, the faulty harness replaced along with the TCM. It is likely fried, so you got a new paperweight if you want i.
 
OP
D

Donna

New Member
Joined
Feb 21, 2020
Messages
11
Location
Miami, FL
Just wanted to add the final diagnosis. It was the Instrument Cluster that went bad.
 
  • Like
Reactions: Chris

Chris

Administrator
Staff Member
Joined
Sep 28, 2015
Messages
31,028
Location
Florence, AZ
Thanks for the update! The instrument cluster itself went bad? That's not something you hear of often. Glad to hear you got it figured out though.
 

Ballermaris

Member
Lifetime Supporting Member
Joined
Feb 21, 2020
Messages
99
Location
Atlanta GA
Well, that was interesting, but then again the instrument cluster is a computer unit itself. There is virtually no direct connection with regards to an old fashioned speedo cable like the old days. All of the instrumentation is electronic and receives its data from the TCM.

Much like the accelerator for the motor, many are "fly-by-wire", no more cable linkage.