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Is there anything connected to the APP circuits? like a pedal commander etc....If there is disconnect it and re-test, There's a 40 cavity connector X104 located under the brake booster area, Its rectangular, Pull that apart and see if there is any water intrusion, corrosion etc.... The other that's also a 40 cavity rectangular X102 is located RF, I think its beside the PDC(underhood fuse block). Also if u have a DVOM u can check the circuits starting at the APP sensor connector. You would check for 5V reference on C(TAN) and F(WH/BK) KOEO. Check for less than 5 ohms on A(Purple) and D(BN). For reference A is purple and F is white/black, Its a 6 cavity connector. Likely have high resistance in a circuit which would affect a voltage/low reference circuit.
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