Foundation Brake

Test 1 Through 3:

Test 4 Through 7:

Symptom:
FOUNDATION BRAKE

When Monitored and Set Condition:
FOUNDATION BRAKE

When Monitored: Vehicle speed above 6 km/h (4 mph) for 2 seconds.

Set Condition: Low feedback voltage from the Brake Pressure Switch Sense circuit. The above criteria satisfied for 255 consecutive checks spaced 5 milliseconds apart (1.3 seconds total).

POSSIBLE CAUSES
LOW FLUID LEVEL
FOUNDATION BRAKE INTERMITTENT DTC
BRAKE PRESSURE SWITCH SENSE CIRCUIT SHORTED TO GROUND
BRAKE PRESSURE SWITCH SHORTED TO GROUND
CAB DEFECTIVE - BRAKE PRESSURE SWITCH SENSE CIRCUIT SHORTED TO GROUND