Foundation Brake

Test 1 And 2:

Tests 3 Through 6:

Symptom:
FOUNDATION BRAKE

When Monitored and Set Condition:
FOUNDATION BRAVE

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

Set Condition:
2. Low feedback voltage from the differential pressure assembly (DPA) switch.
3. Criteria 1-2 satisfied for 255 consecutive checks spaced 5 milliseconds apart (1.3 seconds total).

POSSIBLE CAUSES
BRAKE FLUID LOW
BRAKE PRESSURE SWITCH SENSE CIRCUIT SHORT TO GROUND
DIFFERENTIAL PRESSURE ASSEMBLY SWITCH DEFECTIVE
DIFFERENTIAL PRESSURE ASSEMBLY SWITCH OBSERVABLE DEFECT
CAB CONNECTOR OBSERVABLE DEFECT
CAB DEFECTIVE