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.
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505024
20560
36
Wheel 8 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
Table 18 - GSBC System/ECU Diagnostic Trouble Codes (DTCs)
34
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
0x505112
20561
18
Wheel 9 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505123
20561
35
Wheel 9 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505124
20561
36
Wheel 9 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505212
20562
18
Wheel 10 Brake Lining Wear
Supply Circuit: Circuit Short To
Battery
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505223
20562
35
Wheel 10 Brake Lining Wear
Supply Circuit: Signal Stuck Low
Lining Wear Sensor: Signal Amplitude Fault
CC
0x505224
20562
36
Wheel 10 Brake Lining Wear
Supply Circuit: Signal Stuck High
Lining Wear Sensor: Signal Amplitude Fault
CC
0x507E68
20606
104
Brake Lining Wear: Event
Information
Lining Wear Sensor: Signal Compare Fault
DD
0x508707
20615
7
Wheel 1 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x508762
20615
98
Wheel 1 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x508C07
20620
7
Wheel 2 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x508C62
20620
98
Wheel 2 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x508D07
20621
7
Wheel 3 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x508D62
20621
98
Wheel 3 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x508E07
20622
7
Wheel 4 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x508E62
20622
98
Wheel 4 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x508F07
20623
7
Wheel 5 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x508F62
20623
98
Wheel 5 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x509007
20624
7
Wheel 6 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x509062
20624
98
Wheel 6 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
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)
35
Troubleshooting
GSBC SYSTEM & ECU DTCS
DTC#
SPN
FMI
DTC NAME
DTC DESCRIPTION
ACTION
0x509107
20625
7
Wheel 7 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x509162
20625
98
Wheel 7 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x509207
20626
7
Wheel 8 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x509262
20626
98
Wheel 8 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x509307
20627
7
Wheel 9 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x509362
20627
98
Wheel 9 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
0x509407
20628
7
Wheel 10 Braking Monitoring:
Mechanical Failures
The left and right wheel speeds are compared
on every axle to detect the effect of a possible
brake damage.
EE
0x509462
20628
98
Wheel 10 Braking Monitoring:
Signal Compare Failure
Noisy WSS signal WSS faulty.
Z
The fault is set if the comparison of the wheel
speeds on one axle during curve driving is not
plausible (during curve driving the inner wheel
is slower).
FF
0x509695
20630
149
Wheel Speed Sensor
Configuration: Incorrect
Assembly
0x509768
20631
104
Roller Test Bench Mode: Event
Information
Indicator that Dyno Mode is active.
GG
0x509E54
20638
84
EBS, Configurable High
Side Switch Circuits: Missing
Calibration
Unconfigured EPM connected to GSBC ECU.
HH
0x50B116
20657
22
Voltage Regulator, Power
Supply: Circuit Voltage Below
Threshold
Undervoltage detected by EBS Central ECU.
JJ
0x50B117
20657
23
Voltage Regulator, Power
Supply: Circuit Voltage Above
Threshold
Undervoltage detected by EBS Central ECU.
JJ
0x50B216
20658
22
Voltage Regulator: Circuit
Voltage Below Threshold
Undervoltage detected by EBS Central ECU.
JJ
0x50B41C
20660
28
10V Power Supply: Circuit
Voltage Out of Range
Internal pre-stabilizer voltage is higher than
13V and 10V supply voltage is either below
8.5V or above 10.5V.
KK
0x50B449
20660
73
10V Power Supply: Internal
Electronic Failure
Internal pre-stabilizer voltage is higher than
13V and 10V supply voltage is either below
8.5V or above 10.5V.
KK
0x50B509
20661
9
Pre-Stabilizer Circuit: Component
Failures
Internal pre-stabilizer voltage is higher than
13V and 10V supply voltage is either below
8.5V or above 10.5V.
KK
Table 18 - GSBC System/ECU Diagnostic Trouble Codes (DTCs)
36
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
0x50B549
20661
- 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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