Module - Transfer Shift Control, purpose? | Ford Explorer Forums - Serious Explorations

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Module - Transfer Shift Control, purpose?

jo7hs2

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Random PTU related question that just came up in looking for revisions to the PTU... Anybody have any clue what this part does?

Module - Transfer Shift Control
Part #: TM283 (7E453)
Module - Transfer Shift Control | FordUS

It’s sort of a wiring harness type thing with some electronics listed on the PTU parts diagram. Since I thought the PTU was essentially dumb hardware with no electronics, and since the uncooled PTU supposedly has no temperature sensor, I’m baffled as to what this part does. Any ideas?
 












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