Can anyone tell me if a 02 jeep cherokee 4.0 ecm needs

Does the ecm need the bcm and tcm to function? Im not sure when they started using the data line system.

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Reply to: Can anyone tell me if a 02 jeep cherokee 4.0 ecm needs
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Independent Module

These three modules are independent.

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Post was last edited on June 7, 2018 1:34 AM PDT

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Independent module

So in theory.. l should be able to take the ecm and all its sensors, and put them on a totaly different engine, and not have any serial buss codes?

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Independent module

I dont know what ppp stands for

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Yes, they are separate modules, but they communicate with each other. ie, if the TCM is getting garbage from the PCM, the trans is going to act up and set a code. And vice-versa.


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