PCM/TCM/ECM/ECU pinout

[Antonio Perez]

Hello everyone, I'm new to the forum. I recently purchased a 2003 Dodge Ram 1500 4.7L, 2WD that had a passenger tire blow up and destroyed the inner wheel well fender and ripped just one wire out of one of the PCM connectors and previous owner didn't want to deal with it. The wire is white and baby blue, I'm not sure where this wire goes because I can't find the other portion for it and I counted all the wire in all the connectors and there isn't an extra female pin in any of the connectors. I am getting a P0755 code, I replaced the solenoid pack body, I had the black connector and online recommendations is to upgrade to one with white connector so I did that and still have P0755 code. Im assuming im getting the P0755 code due to the wire being ripped out of PCM connector. I believe the transmission is stuck in 3rd gear because from a stop if I press the gas slowly the truck will take some time to get up to speed and will not up shift or down shift. If I press the gas hard I feel a jerk that feels like the transmission is slipping. Sorry about the long post, I would really appreciate your inputs and ideas of where to go look for a pinout diagram for the PCM. Transmission is a 545RFE according to build sheet from website. Thank you for your help

 

[Fast69Mopar]

Hello everyone, I'm new to the forum. I recently purchased a 2003 Dodge Ram 1500 4.7L, 2WD that had a passenger tire blow up and destroyed the inner wheel well fender and ripped just one wire out of one of the PCM connectors and previous owner didn't want to deal with it. The wire is white and baby blue, I'm not sure where this wire goes because I can't find the other portion for it and I counted all the wire in all the connectors and there isn't an extra female pin in any of the connectors. I am getting a P0755 code, I replaced the solenoid pack body, I had the black connector and online recommendations is to upgrade to one with white connector so I did that and still have P0755 code. Im assuming im getting the P0755 code due to the wire being ripped out of PCM connector. I believe the transmission is stuck in 3rd gear because from a stop if I press the gas slowly the truck will take some time to get up to speed and will not up shift or down shift. If I press the gas hard I feel a jerk that feels like the transmission is slipping. Sorry about the long post, I would really appreciate your inputs and ideas of where to go look for a pinout diagram for the PCM. Transmission is a 545RFE according to build sheet from website. Thank you for your help

Here is a link to the Factory Service Manual in PDF format from my OneDrive account. You can download the service manual. Navigate to section 8W-80 for the connector pinout of every module.

https://1drv.ms/b/s!AojwsjavMvQdpFCtMTM7yCOUyFPw

 

[Antonio Perez]

I think you just solved my problem. It's actually a white and dark blue wire, it looked light blue because the wire stretched when it got ripped, green plug, pin #6. I can't thank you enough.

 

[Antonio Perez]

Here is a link to the Factory Service Manual in PDF format from my OneDrive account. You can download the service manual. Navigate to section 8W-80 for the connector pinout of every module.

https://1drv.ms/b/s!AojwsjavMvQdpFCtMTM7yCOUyFPw

Thank you.

 

[Hey_Grandad]

Just curious, were you able to rectify your problem??

 

[Antonio Perez]

Just curious, were you able to rectify your problem??

Yes, I was able to figure out my problem. The white and blue wire went to the #6 pin hole in the green connector. The gold pin got ripped out when the tire blew. That wire powers the 2C solenoid in the solenoid pack. Since the solenoid was not engaging the PCM went into limp mode and the transmission was stuck in 3rd gear.

 

[Triram123]

Hello I am looking for a pcm pinout for an 03 Cummins. Had the TIPM short out and fry a ton of wires and am trying to get communication with the transmission.

 

[LoneWolf3574]

Hello I am looking for a pcm pinout for an 03 Cummins. Had the TIPM short out and fry a ton of wires and am trying to get communication with the transmission.

https://www.ramforum.com/threads/3rd-gen-parts-manuals-and-2003-2004-service-manuals.6504/