31 BW8207 Bendix Global Scalable Brake Control (GSBC) System Operator’s Manual
BENDIX GSBC SYSTEM TROUBLESHOOTING CONT.
TEST 1: TEMPORARY BACKUP MODE TEST CONT.
Test Procedure
This test requires the operator to unpark the vehicle and for the service brakes to be
cycled in a specic sequence. If the vehicle moves or rolls during the test, the test
will fail. To ensure that the vehicle remains stationary and that the test is completed
correctly, chocking the wheels before the test will help ensure that the test can run
successfully.
NOTE: To correct a test failure due to motion of the vehicle, refer to Temporary Backup
Mode Test Procedure Step 3.B on page 32.
Failure to chock the wheels could result in a potential collision, property
damage, serious injuries, or death.
It is the operator’s responsibility to prevent unintended vehicle movement. If
the vehicle begins to move during the test, apply the service and/or parking
brakes as necessary, regardless of test status. Once the vehicle is safely
stopped, refer to Temporary Backup Mode Test Procedure Step 3.B on page 31
on how to restart the test procedure.
When prompted by the vehicle, to run the Temporary Backup Mode test, complete
the following steps:
1. When the dashboard displays “Fully depress brake pedal and release the
parking brake,” complete the following:
• Fully press and hold the service brakes.
• Release the parking brakes on the power unit.
• Release the parking brakes on the trailer (if a trailer is connected).
NOTE: The eTPCM will only be part of this test if a trailer is connected at
startup. If the vehicle was built to tow other air brake vehicles but one is not
connected, the test will skip the eTPCM but the counter will not be reset.
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