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bill
bill, dodge master tech
Category: Dodge
Satisfied Customers: 1627
Experience:  25 years with dodge drivability and electrical expert
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2006 ram diesel was running then had to be boosted off then

Customer Question

2006 ram diesel was running then had to be boosted off then it will not start will blow the pcm fuse as soon as it in put in.
JA: Do all the fuses have the correct amperage for the circuits they're in?
Customer: Yes
JA: Are you fixing your Ram yourself? What have you tried so far?
Customer: Installed new batteries checked all fuses can't read codes because obd port is dead because of the pcm fuse.
JA: Anything else you want the mechanic to know before I connect you?
Customer: It was boosted off with more than one jumper box at the auction I think they may have fried the pcm.
Submitted: 7 months ago.
Category: Dodge
Expert:  bill replied 7 months ago.

good morning what is the fuse NUMBER that blows i need to see the circuit

Customer: replied 7 months ago.
Number 42 it's for the pcm
Expert:  bill replied 7 months ago.

ok there is nothing else on that fuse EXCEPT the engine computer (engine mounted on the left side) so if that fuse blows every time you replace it the engine computer has shorted internally and has failed

why i cannot say 100% but i HAVE seen a few cummins engine controllers fail in this way, due to it's location on the engine it's subject to road salt and debris and this can get inside the controller and cause damage to the circuit board.

since this computer is not cheap i would inspect very carefully all the wiring from the fuse box to the pcm if nothing is chafed then the pcm has failed