WABCO iABS 2S/1M Standard, Maintenance Manual

Page: 74 / 188

74
Diagnostics
Blink
Code
SPN FMI
Suspect
Component
and Location
ITP
Function
Fault
Description
(FMI)
Cause Repair Information
14 251 12 Power
Supply
N/A Power
Supply -
Under-
voltage
When
Driving
A deep
undervoltage has
occurred.
- Check the cable between
modulator and towing vehicle.
- Check for tight seat of the
connectors.
- Test the cable for continuity
from end to end.
- Check whether water or
moisture has entered into one
of the connectors and check
the seals for proper fit.
- Check whether the cable is
frayed.
- If no other fault can be found,
replace the cable and/or
connectors.
15 253 2 Internal ECU
Error
N/A Parameter
Setting -
External
Pin Not
Compatible
The parameter
setting is incorrect.
A GIO function is
parameterized to
an improper pin.
- Define the modulator
parameters again. If failure is
still present, contact WABCO
Customer Care Center at
855-228-3203 for assistance.
15 253 12 Internal ECU
Error
N/A Parameter
Setting -
FSC-AC
Configur-
ation Failed
Internal checksum
error.
- Define the modulator
parameters again. If failure is
still present, contact WABCO
Customer Care Center at
855-228-3203 for assistance.
15 254 3 Internal ECU
Error
N/A Trailer
Modulator -
(Uvent_g)
Voltage
Above
Normal or
Shorted High
Internal error. - Switch ignition off for at least
5s. If the fault exists then,
contact WABCO Customer
Care Center at 855-228-3203
for assistance.
15 254 4 Internal ECU
Error
N/A Trailer
Modulator -
(Uvent_g)
Under-
voltage/
Short Circuit
to Ground
Internal error. - Switch ignition off for at least
5s. If the fault exists then,
contact WABCO Customer
Care Center at 855-228-3203
for assistance.
15 254 11 Internal ECU
Error
N/A GIO Service
Indication
- Memory
Bit Service
Signal Set
Memory bit set for
service signal.
- Please perform defined
service activity.
15 254 12 Internal ECU
Error
N/A Trailer
Modulator
- Err
Watchdog
Internal error. - Switch ignition off for at least
5s. If the fault exists then,
contact WABCO Customer
Care Center at 855-228-3203
for assistance.