7
SPN, SID, FMI Fault Codes
92
WABCO
Maintenance Manual MM-0112 (Revised 07-18)
Figure 7.26
Figure 7.2
6
SPN
SID
FMI
Blink
Code
Description
W
arning
Light
System
Reaction
Cause
Action
Datalink J1939
639
231
2
7
+ 1
SAE J1939
Data Link
VSC1 Speed
Err
atic
,
Inter
mittent or
Incorrect
ABS WL
N/A
Receiv
ed v
ehicle
speed and ABS
v
ehicle speed is
incorrect.
Super
vision
nor
mally not
activ
ated.
•
Chec
k tire siz
e
and v
e
ri
fy ECU is f
o
r the correct v
e
hicle application.
639
231
5
7
+ 1
SAE J1939
Data Link
Open or Shor
t
Circuit
ABS WL
ESC/RSC/A
TC/
HSA Disab
led
SAE J1939
comm
unication is
not possib
le
.
•
If ABS ECU is only v
e
hicle ECU not comm
unicating, v
e
ri
fy J1939 wir
ing betw
e
en ABS
ECU and J1939 bac
kbone
.
•
Resistance should be 60 ohms betw
een J1939 high and lo
w
.
•
K
e
y on, chec
k v
o
ltage to g
round at the ECU har
ness connector J1939 pins and v
e
ri
fy
the high side has 2.5 to 5 v
o
lts and the lo
w side has 2.49 v
o
lts or less
. The readings
will fluctuate b
u
t should be in r
ange and should ne
v
e
r be the same
. The total of both
readings together should be appro
ximately 5 v
o
lts
.
639
231
6
7
+ 1
SAE J1939
No Access
ABS WL
ESC/RSC/A
TC/
HSA Disab
led
SAE J1939
comm
unication is
not possib
le
.
•
If ABS ECU is only v
ehicle ECU not comm
unicating, v
e
rify J1939 wir
ing betw
een ABS
ECU and J1939 bac
kbone
.
•
Resistance should be 60 ohms betw
e
en J1939 high and lo
w
.
•
K
e
y on, chec
k
v
o
ltage to g
round at the ECU har
n
ess connector J1939 pins and v
e
rify
the high side has 2.5 to 5 v
o
lts and the lo
w side has 2.49 v
o
lts or less
. The readings
will fluctuate b
u
t should be in r
a
nge and should ne
v
e
r be the same
. The total of both
readings together should be appro
x
imately 5 v
o
lts
.
639
231
9
7
+ 1
SAE J1939
Data Link
EEC1
Timeout
ABS WL
ESC/RSC/A
TC/
HSA Disab
led
There is either too
m
uch time in
betw
een EEC1
broadcasts from the
engine or the
message content is
not as e
xpected.
•
Contact OEM to v
e
ri
fy J1939 wir
ing betw
een engine ECU and v
ehicle J1939 bac
kbone
is correct and messages are correct.
•
If ABS ECU is only v
ehicle ECU not comm
unicating, v
e
rify J1939 wir
ing betw
een ABS
ECU and J1939 bac
kbone
.
•
Resistance should be 60 ohms betw
e
en J1939 high and lo
w
.
•
K
e
y on, chec
k
v
o
ltage to g
round at the ECU har
n
ess connector J1939 pins and v
e
rify
the high side has 2.5 to 5 v
o
lts and the lo
w side has 2.49 v
o
lts or less
. The readings
will fluctuate b
u
t should be in r
a
nge and should ne
v
e
r be the same
. The total of both
readings together should be appro
x
imately 5 v
o
lts
.
639
231
10
7 + 1
SAE J1939
XBR Timeout
T
empor
a
ry
ABS WL
XBR Disab
led
The e
xter
nal br
ak
e
request message
(XBR) is e
xpected
b
u
t is not being
receiv
ed in e
xpected
time or not at all.
•
V
e
ri
fy J1939 wir
ing betw
e
en e
x
ter
nal ECU which is sending request and J1939
bac
kbone
.
•
This message is most lik
e
ly to come from Adaptiv
e
Cr
uise or a Collision Mitigation
System such as OnGuard™.
639
231
12
7 + 1
SAE J1939
Inter
nal Error
ABS WL
ABS Wheel
Disab
led
ESC/RSC/A
TC/
HSA Disab
led
An inter
nal f
ault
related to the CAN
controller is
detected.
•
V
e
ri
fy J1939 wir
ing betw
e
en ABS ECU and J1939 bac
kbone
.
•
Resistance should be 60 ohms betw
e
en J1939 high and lo
w
.
•
K
e
y on, chec
k
v
o
ltage to g
round at the ECU har
n
ess connector J1939 pins and v
e
ri
fy
the high side has 2.5 to 5 v
o
lts and the lo
w side has 2.49 v
o
lts or less
. The readings
will fluctuate b
u
t should be in r
a
nge and should ne
v
e
r be the same
. The total of both
readings together should be appro
x
imately 5 v
o
lts
.
639
231
13
7 + 1
SAE J1939
XBR Timeout
T
empor
a
ry
ABS WL
XBR Disab
led
The e
xter
nal br
ak
e
request message
(XBR) has been
receiv
ed incorrectly
.
•
V
e
ri
fy J1939 wir
ing betw
e
en e
x
ter
nal ECU which is sending request and J1939
bac
kbone
.
•
This message is most lik
e
ly to come from Adaptiv
e
Cr
uise or a Collision Mitigation
System such as OnGuard™.
4012655
a
