BW8207 Bendix Global Scalable Brake Control (GSBC) System Operator’s Manual 36
BENDIX GSBC SYSTEM TROUBLESHOOTING CONT.
TEST 2: REVERSE VALIDATION TEST CONT.
Test Procedure (cont.)
When “Test Not Started Fully Depress Brake Pedal and Release Parking Brake” displays
on the dashboard, to run the Reverse Test, complete the following steps:
1. Make sure the vehicle is parked.
2. Turn the vehicle ignition o for at least 90 seconds to reset the brake
controller.
NOTE: Do not press the brake pedal during this time, or the brake controller
will not reset.
3. Restart the vehicle.
4. Disable Auto-Hold using the dash switch.
5. When the dashboard displays “Test Not Started Fully Depress Brake Pedal
and Release Parking Brake,” complete the following:
• Fully press the service brakes.
• Release the parking brakes on the power unit.
• Release the parking brakes on the trailer (if equipped).
• Release the service brakes.
6. The dashboard will display “Test Active Fully Depress Brake Pedal.”
7. Within 10 seconds, press and hold the brake pedal down fully until it stops.
NOTE: Air system pressure must remain above 102 psi for the test to operate.
8. Continue to hold the brake pedal steady at this application level until the
“Test Active Fully Depress Brake Pedal” message no longer displays.
9. If the brake pedal is not pressed and held in place, or not pressed completely,
the “Test Failed Brake Pedal Operation Incorrect” message may appear. The
test will fail and this procedure must be restarted.
NOTE: This does not necessarily indicate a fault with the foot brake module,
only that the test was not operated correctly. To restart the test, refer to
Reverse Test Procedure Step 11.B on page 37.
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