OBD2 wire cut need location?

Tiny
ADINJOHN
  • MEMBER
  • 2001 MERCURY MOUNTAINEER
  • 5.0L
  • V8
  • 2WD
  • AUTOMATIC
  • 144,000 MILES
I swapped everything from my mountaineer into my ranger and I found a wire (light blue/ white stripe) that looks like it got severed. Its pin #7 on the OBD2 port and everything says it’s an iso/K-line communication wire that goes to the GEM, but I cannot find the other severed end or a diagram that shows where the wire goes to from the port.
Tuesday, March 11th, 2025 AT 10:11 AM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 50,009 POSTS
The light blu/white wire goes to the joint connection for several systems which is near the brake out to relay module. Here is the wiring diagram for the data link connector so you can see what I am talking about. Check out the images (below).
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Wednesday, March 12th, 2025 AT 10:37 AM

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