SPN SID FMI
Blink
Code
Description
Warning
Light
System
Reaction
Cause Action
520210 88 9 7 + 1
ESC CAN
messages
missing, data
erratic or
incorrect
ATC WL ESC Disabled
Data communication
between the ESC
module, SAS and
the ABS ECU is
missing or incorrect.
• Check CAN wiring between ABS-ECU and ESC-module for interruptions and short
circuits.
• Check CAN wiring between ABS-ECU and SAS for interruptions and short circuits.
• Check for corroded or damaged wiring between the ECU, SAS and ESC Module.
520210 10
ESC
Plausibility
ATC WL ESC Disabled
The ESC system
detects a plausibility
issue while driving
(straight line).
• Check that SAS and ESC module are correctly mounted, leveled, and in correct
location. Contact WABCO North America Customer Care at 855-228-3203
to ensure ESC module and SAS are mounted in accordance with ECU
parameters.
520210 88 12 8 + 6
ESC System
Failure
ATC WL ESC Disabled
ECU has detected
ESC system failure
due to missing or
incorrect data from
ESC Module or SAS.
• Check CAN wiring between ABS-ECU, ESC-module and SAS for interruptions and
short circuits.
• Check for corroded or damaged wiring between the ECU, SAS and ESC Module.
• Check for stray single power wires on or near the ESC module.
• Check for damaged or incorrectly mounted SAS.
• Verify ESC module is securely mounted, leveled and in correct location.
• Verify ABS ECU and ESC has been correctly calibrated. Follow the ESC Initialization
(End of Line) calibration. Refer to Section 8.
520210 88 13 8 + 6
ESC
Initialization
required
ATC WL ESC Disabled
The system has
detected that the
ABS ECU, ESC
module or
parameters were
exchanged and ESC
initialization is
required.
• Follow the ESC Initialization (End of Line) calibration.
520210 88 14 8 + 6
ESC Module
Mounting
Fault
ATC WL ESC Disabled
E4 version: The ESC
module mounting is
not in accordance
with specification.
E8 version: ESC
Initialization not
Completed.
• E4 version: Verify ESC module is securely mounted, leveled and in correct location.
Contact WABCO North America Customer Care at 855-228-3203 to ensure
ESC module mounting is in accordance with ABS ECU parameters.
• E8 version: Follow the ESC Initialization (End of Line) calibration procedure for E8
version ECUs.
520211 7
Liftaxle
Plausibility
Fault
ATC WL ESC Disabled
The system has
detected that
the ABS ECU
parameters are not
plausible.
• Contact WABCO North America Customer Care at 855-228-3203 to ensure
that the ECU parameter setting is correct for the vehicle.
1807 89 1 8 + 6
SAS Offset
Fault
ATC WL ESC Disabled
The Steering Angle
Sensor offset is out
of tolerance.
• Check for damaged or incorrectly mounted SAS.
• If work has been performed on the vehicle which affects the steering system or front
end alignment, perform SAS Calibration and ESC Initialization. Refer to Section 8.
1807 89 2 8 + 6
SAS Not
Plausible
ATC WL ESC Disabled
The ESC module
has detected an
implausible steering
angle compared to
the measured yaw
rate.
• Check for correct mounting of the SAS and ESC module.
4010667a
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