ECM problem?

pocojo

TJ Enthusiast
Original poster
Supporting Member
Joined
Jun 3, 2017
Messages
262
Location
Stroudsburg, PA, United States
Hello all.
I have intermittent issues, like the wipers not working sometimes and slow to indicate fuel gauge and oil pressure indicator. If I disconnect the three ECM modules and reconnect them all works well. Is this issue indicative of a failing ECM. What I don't know about ECMs, I can write a book about. Thanks for reading.

Pocojo
 
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Hi guys, hope you will find the issue.
@Wranglerfix could you help with a basic protocol to check the PCM, just to check if it is needed to send it to you?
I mean what voltage for CCD Bus, waht pins to check for grounds and power feed, etc...? It would be helpfull, thanks in advance