BENDIX GSBC - Page 29

29 BW8207 Bendix Global Scalable Brake Control (GSBC) System Operator’s Manual
BENDIX GSBC SYSTEM TROUBLESHOOTING CONT.
TEST 1: TEMPORARY BACKUP MODE TEST
The Temporary Backup Mode Test is designed to check and conrm operation of
the pneumatic backup control system which includes the FBM, eTPCM, EPMs and
the air lines that connect these components together. By intentionally disabling the
electronic mode operation of these components, the underlying pneumatic and
mechanical functions can be checked for correct operation.
The Bendix® GSBC® system will constantly monitor the vehicle for the correct set of
preconditions and attempt to run the Temporary Backup Mode Test silently in the
background without notifying the driver if the correct preconditions are met.
If this test does not run after 150 days, the driver will be reminded to run the test by
a message on the dashboard. If the test is still not run, after an additional 10 days
(for a total of 160 days since the last test), the system will set the yellow EBS warning
lamp on the dashboard, which will not be cleared until the test is run.
Display Notications for Driver
When the dashboard displays the rst pop-up message, the driver must take
action. The driver cannot run the test unless a pop-up message rst appears.
Test Mode Test State Pop-Up Message Warning Lamp Status
Silent All Modes None None
Reminder
Before Test
“Fully Depress Brake Pedal
and Release Parking Brake”
None
Test Aborted
“Test Aborted,
Vehicle Moving”
None
Test Completed
Successfully
“Test Completed,
Vehicle Ready to Use”
None
Test Failed “Truck Brake Malfunction”
Red EBS Warning lamp set to
ON if EPM (power unit) fails.
Yellow Lamp set to ON if
eTPCM (trailer control) fails.
Forced
Before Test
“Fully Depress Brake Pedal
and Release Parking Brake”
Yellow Lamp is ON.
Test Aborted
“Test Aborted,
Vehicle Moving”
Yellow Lamp remains ON.
Test Completed
Successfully
“Test Completed,
Vehicle Ready to Use”
Yellow Lamp is turned OFF.
Test Failed “Truck Brake Malfunction”
Red EBS Warning lamp set to
ON if EPM (power unit) fails.
Yellow Lamp set to ON if
eTPCM (trailer control) fails.
NOTE: These dashboard displays and their operation are for representation purposes only.
Check with the OEM for actual dashboard displays and operation.
IMPORTANT