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Tim Mohr
Tim Mohr, ASE MASTER TECH
Category: Dodge
Satisfied Customers: 15121
Experience:  30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL
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2002 p1388 code have 70ohms at coil and voltage at where i

Customer Question

2002 p1388 code have 70ohms at coil and voltage at where i need for this ASD relay
JA: Do you have a scan tool to read the codes?
Customer: yes a solus
JA: What is the model of your '02 Dodge?
Customer: im from DOT Caltrans btw its a 2002 Ram 2500 5.7
JA: Are you fixing your Ram yourself? What have you tried so far?
Customer: well thing is we had a dead battery issue and i charged it and now i have this problem
JA: Anything else you want the mechanic to know before I connect you?
Customer: it started fine after the battery but left to sit overnight and it started doing this
Submitted: 1 month ago.
Category: Dodge
Expert:  Tim Mohr replied 1 month ago.

Hi, my nme is Tim, this is almost always a bd PCM, the PCM grounds the asd relay to turn it on, have you checked to see if the ASD is getting a ground from the PCM?

Customer: replied 1 month ago.
would the ASD coil get its ground from the PCM? what wire can i check?
Expert:  Tim Mohr replied 1 month ago.

Yes, the dark blue/ yellow wire is the relay control, that comes form the computer, it should show ground when in the run position, if it does not, then ohm out the wire between the computer and the relay, if it shows continuity, then replace the PCM, this is a common repair for this code,Tim

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