F 550 4WD Super Duty V8-6.0L DSL Turbo VIN P (2003)
Gear Sensor/Switch: Description and Operation
4x4 Low Switch
The 4x4 Low Switch sends a ground signal to the instrument cluster when in 4x4L. This input is used to adjust the shift schedule.
Using Standard Corporate Protocol (SCP), the cluster provides a 4x4 status signal to the PCM.
