NHTSA ID Number: 11016934
Manufacturer Communication Number: SD-27-5023V
TSB/Document Date: 2025-04-10
Summary
Bendix
GSBC (Global Scalable Brake Control) System and EBS-90 Electronic Control Unit (ECU) service data sheets.
0x501B21
20507
33
Lining Wear Sensor 5: Signal
Amplitude Less Than Minimum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501B22
20507
34
Lining Wear Sensor 5: Signal
Amplitude Greater Than
Maximum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501B62
20507
98
Lining Wear Sensor 5: Signal
Compare Failure
Lining Wear Sensor: Signal Compare Fault
DD
Table 18 - GSBC System/ECU Diagnostic Trouble Codes (DTCs)
32
SD-27-5023V Rev 000 Bendix® GSBC® System and EBS-90™ (Global Scalable Brake Control System and Electronic Control Unit)
Troubleshooting
GSBC SYSTEM & ECU DTCS
DTC#
SPN
FMI
DTC NAME
DTC DESCRIPTION
ACTION
0x501C21
20508
33
Lining Wear Sensor 6: Signal
Amplitude Less Than Minimum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501C22
20508
34
Lining Wear Sensor 6: Signal
Amplitude Greater Than
Maximum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501C62
20508
98
Lining Wear Sensor 6: Signal
Compare Failure
Lining Wear Sensor: Signal Compare Fault
DD
0x501D21
20509
33
Lining Wear Sensor 7: Signal
Amplitude Less Than Minimum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501D22
20509
34
Lining Wear Sensor 7: Signal
Amplitude Greater Than
Maximum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501D62
20509
98
Lining Wear Sensor 7: Signal
Compare Failure
Lining Wear Sensor: Signal Compare Fault
DD
0x501E21
20510
33
Lining Wear Sensor 8: Signal
Amplitude Less Than Minimum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501E22
20510
34
Lining Wear Sensor 8: Signal
Amplitude Greater Than
Maximum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501E62
20510
98
Lining Wear Sensor 8: Signal
Compare Failure
Lining Wear Sensor: Signal Compare Fault
DD
0x501F21
20511
33
Lining Wear Sensor 9: Signal
Amplitude Less Than Minimum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501F22
20511
34
Lining Wear Sensor 9: Signal
Amplitude Greater Than
Maximum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x501F62
20511
98
Lining Wear Sensor 9: Signal
Compare Failure
Lining Wear Sensor: Signal Compare Fault
DD
0x502021
20512
33
Lining Wear Sensor 10: Signal
Amplitude Less Than Minimum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x502022
20512
34
Lining Wear Sensor 10: Signal
Amplitude Greater Than
Maximum
Lining Wear Sensor: Signal Amplitude Fault
CC
0x502062
20512
98
Lining Wear Sensor 10: Signal
Compare Failure
Lining Wear Sensor: Signal Compare Fault
DD
0x504912
20553
18
Wheel 1 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504923
20553
35
Wheel 1 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504924
20553
36
Wheel 1 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504A12
20554
18
Wheel 2 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
Table 18 - GSBC System/ECU Diagnostic Trouble Codes (DTCs)
SD-27-5023V Rev 000 Bendix® GSBC® System and EBS-90™ (Global Scalable Brake Control System and Electronic Control Unit)
33
Troubleshooting
GSBC SYSTEM & ECU DTCS
DTC#
SPN
FMI
DTC NAME
DTC DESCRIPTION
ACTION
0x504A23
20554
35
Wheel 2 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504A24
20554
36
Wheel 2 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504B12
20555
18
Wheel 3 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504B23
20555
35
Wheel 3 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504B24
20555
36
Wheel 3 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504C12
20556
18
Wheel 4 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504C23
20556
35
Wheel 4 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504C24
20556
36
Wheel 4 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504D12
20557
18
Wheel 5 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504D23
20557
35
Wheel 5 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504D24
20557
36
Wheel 5 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504E12
20558
18
Wheel 6 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504E23
20558
35
Wheel 6 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504E24
20558
36
Wheel 6 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504F12
20559
18
Wheel 7 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504F23
20559
35
Wheel 7 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x504F24
20559
36
Wheel 7 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505012
20560
18
Wheel 8 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505023
20560
35
Wheel 8 Brake Lining Wear
Supply Circuit: Signal Stuck Low
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Ideal for hydraulic and disc brakes
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
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TSB/Document ID: SD-27-5023V
Replacement Service Bulletin Number:
MFR Communication Date: 2025-04-10
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
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