Intermittent No bus issue, pin out for the PCM connections needed?
2002 DODGE RAM
1,000 MILES • 4.7L • V8 • 2WD • AUTOMATIC
JAMES BERRY4
MEMBER
2 POSTS
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I have an intermittent no bus issue that stops me from getting fire to the coil packs. can i get the pin out for the PCM connections?
Apr 10, 2025 at 11:16 AM
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AL514
AUTOMOTIVE REPAIR CONTRIBUTOR
5,479 POSTS
Hello, yup we can provide that, do you want the entire Powertrain diagram set?
Apr 11, 2025 at 10:50 AM
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AL514
AUTOMOTIVE REPAIR CONTRIBUTOR
5,479 POSTS
Here are the network (Data Bus) diagrams (1,2), the PCM connectors and pinouts. And I'll post the PCM wiring next. But on diagrams 9 and 10 you could check at the Data Link Connector when the fault occurs for either a solid 12 or 0-volt reading, meaning a short to power or short to ground.
Images (Click to enlarge)
Apr 11, 2025 at 11:27 AM
AL514
AUTOMOTIVE REPAIR CONTRIBUTOR
5,479 POSTS
Here are the PCM wiring diagrams if needed, page 1 (diagram 1,2 top and bottom) and so on.
Images (Click to enlarge)
Apr 11, 2025 at 11:29 AM
JAMES BERRY4
MEMBER
2 POSTS
I have a intermittent no bus issue thats stoping me from getting fire to the coil packs can i get the pin out for the pcm connections
Apr 13, 2025 at 10:25 AM
(Merged)
AL514
AUTOMOTIVE REPAIR CONTRIBUTOR
5,479 POSTS
The PCM connector pinouts are in my 2nd post. Do you not see them?