The Driver Seat Module is located under the front of the seat. You can see here connectors C341c pin1 is an orange/lt green wire that goes to Fuse 3 7.5Amp and pin2 of that same connector is the module communications network wire.
Connector C341a pin 1 dark green wire goes to Fuse 109 30Amp, it sounds like the module may have lost power or not full power to it.
You can check these two wires for power, there should be 12volts on both wires.
The wire labelled VREF is a reference voltage that's used for the seat position sensors, if one of the sensors shorted out and that reference voltage gets pulled to ground it can disable the seat module. So, start with checking the battery voltage from the two fuses, and it's at battery voltage, I would check the C341b connector pin 19 (Orange/White wire), you'll have the best chance IDing the wire by its color. The SIG-RTN is the ground for those position sensors (pin 13 Orange/Red wire).
It's best to back probe the connector wire with a small pin when the connector is still plugged in because unplugged you might not see the fault if the VREF is shorted through one of the position sensors.
Don't touch any potential airbag wires, they are bright yellow connectors, sometimes located underneath seats.
Diagrams 3, 4 are the other switch wiring, from the same Fuse 3 7.5-Amp.
Images (Click to make bigger)
Tuesday, February 18th, 2025 AT 5:58 PM