3
Diagnostics, Troubleshooting and Testing
21
WABCO
Maintenance Manual MM-0112 (Revised 07-18)
Figure 3.13
NOTE:
If the vehicle does not have a blink code switch, a test lead/
jumper wire may be installed as a temporary blink code switch.
For Cab mounted ECUs:
Back probe pin 15 of the X1 connector to
ground for 1 second to obtain codes or back probe pin 15 for 3
seconds to clear codes.
For Frame mounted ECUs with all 12 pin connectors:
Back
probe pin 10 of the X1 connector to ground for 1 second to obtain
codes or back probe pin 10 for 3 seconds to clear codes.
For Frame mounted ECUs with all 18 pin connectors:
Back
probe pin 15 of the X1 connector to ground for 1 second to obtain
codes or back probe pin 15 for 3 seconds to clear codes.
Figure 3.13
Pause
1.5 s
Pause
4 s
Pause
4 s
L
i
ght ON
F
a
ults Cle
a
red
Pause
4 s
Pause
4 s
Pause
4 s
Pause
4 s
L
i
ght ON
F
a
ults Not Cle
a
red (Act
i
ve F
a
ults St
i
ll Ex
i
st)
3 Second
Hold
3 Second
Hold
Cont
i
nues
unt
i
l
i
gn
i
t
i
on
i
s turned off
Note: After f
a
ults
a
re cle
a
red
a
nd
veh
i
cle
i
s st
a
rted, ABS l
a
mp w
i
ll st
a
y
on unt
i
l veh
i
cle
i
s dr
i
ven over 4 mph (6 km/h).
Cont
i
nues unt
i
l
i
gn
i
t
i
on
i
s turned off
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
8
Q
u
i
ck Bl
i
nks = F
a
ults Cle
a
red
SYSTEM ID
SYSTEM ID
SYSTEM ID
SYSTEM ID
SYSTEM ID
SYSTEM ID
Pause
4 s
Pause
4 s
SYSTEM ID
SYSTEM ID
System Conf
i
gur
a
t
i
on Code 2: 4S/4M System
1002022a
S = Seconds
