F 250 2WD Super Duty V8-5.4L VIN 5 (2006)
C9-C11
Test D: DTCS C2806, C2807 and C2808 - Trailer Brakes Circuit Failure
PINPOINT TEST D: DTCs C2806, C2807 AND C2808 - TRAILER BRAKES CIRCUIT FAILURE
Normal Operation
The braking energy that is provided to the trailer is varied with a pulse width modulated (PWM) signal that switches between 0 volt and battery
voltage, the higher the duty cycle the more braking power available. With the vehicle stationary and with the manual slider switch fully to the left with
a gain of 10, there should be greater than 10-12 volts supplied to trailer tow C4099-3 circuit 43 (DB).
