7
SPN, SID, FMI Fault Codes
90
WABCO
Maintenance Manual MM-0112 (Revised 07-18)
Figure 7.24
Figure 7.24
SPN
SID
FMI
Blink
Code
Description
W
arning
Light
System
Reaction
Cause
Action
520210
88
9
7
+ 1
ESC CAN
messages
missing, data
err
atic or
incorrect
A
T
C WL
ESC
Disab
led
Data comm
unication
betw
een the ESC
module
, SAS and
the ABS ECU is
missing or incorrect.
•
Chec
k CAN wir
ing betw
een ABS-ECU and ESC-module f
o
r interr
uptions and shor
t
circuits
.
•
Chec
k CAN wir
ing betw
een ABS-ECU and SAS f
o
r interr
uptions and shor
t circuits
.
•
Chec
k f
o
r corroded or damaged wir
ing betw
een the ECU
, SAS and ESC Module
.
520210
10
ESC
Plausibility
A
T
C WL
ESC
Disab
led
The ESC system
detects a plausibility
issue while dr
iving
(str
aight line).
•
Chec
k that SAS and ESC module are correctly mounted, le
v
e
led, 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
F
ailure
A
TC WL
ESC
Disab
led
ECU has detected
ESC system f
ailure
due to missing or
incorrect data from
ESC Module or SAS
.
•
Chec
k CAN wir
ing betw
een ABS-ECU
, ESC-module and SAS f
o
r interr
uptions and
shor
t circuits
.
•
Chec
k f
o
r corroded or damaged wir
ing betw
een the ECU
, SAS and ESC Module
.
•
Chec
k f
o
r str
a
y single po
w
e
r wires on or near the ESC module
.
•
Chec
k f
o
r damaged or incorrectly mounted SAS
.
•
V
e
ri
fy ESC module is securely mounted, le
v
e
led and in correct location.
•
V
e
ri
fy ABS ECU and ESC has been correctly calibr
a
ted.
F
o
llo
w
the ESC Initialization
(End of Line) calibr
ation.
Ref
e
r to Section 8.
520210
88
13
8 + 6
ESC
Initialization
required
A
T
C WL
ESC
Disab
led
The system has
detected that the
ABS ECU
, ESC
module or
par
ameters w
ere
e
xchanged and ESC
initialization is
required.
•
F
o
llo
w the ESC Initialization (End of Line) calibr
a
tion.
520210
88
14
8 + 6
ESC Module
Mounting
F
ault
A
T
C WL
ESC
Disab
led
E4 v
ersion:
The ESC
module mounting is
not in accordance
with
specification.
E8 v
ersion:
ESC
Initialization not
Completed.
•
E4 v
e
rsion:
V
e
ri
fy ESC module is securely mounted, le
v
e
led 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 par
ameters
.
•
E8 v
e
rsion:
F
o
llo
w the ESC Initialization (End of Line) calibr
ation procedure f
o
r E8
v
e
rsion ECUs
.
520211
7
Liftaxle
Plausibility
F
ault
A
T
C WL
ESC
Disab
led
The system has
detected that
the ABS ECU
par
ameters are not
plausib
le
.
•
Contact WABCO North America Customer Care at 855-228-3203 to ensure
that the ECU par
ameter setting is correct f
o
r the v
ehicle
.
1807
89
1
8
+ 6
SAS Offset
F
ault
A
T
C WL
ESC
Disab
led
The Steer
ing Angle
Sensor offset is out
of toler
ance
.
•
Chec
k f
o
r damaged or incorrectly mounted SAS
.
•
If w
o
rk
has been perf
o
rm
ed on the v
ehicle which aff
ects the steer
ing system or front
end alignment, perf
o
rm
SAS Calibr
ation and ESC Initialization.
Ref
e
r to Section 8.
1807
89
2
8
+ 6
SAS Not
Plausib
le
A
T
C WL
ESC
Disab
led
The ESC module
has detected an
implausib
le steer
ing
angle compared to
the measured y
a
w
rate
.
•
Chec
k f
o
r correct mounting of the SAS and ESC module
.
4010667
a
