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
Light ON
Faults Cleared
Pause
4 s
Pause
4 s
Pause
4 s
Pause
4 s
Light ON
Faults Not Cleared (Active Faults Still Exist)
3 Second
Hold
3 Second
Hold
Continues
until ignition
is turned off
Note: After faults are cleared and
vehicle is started, ABS lamp will stay
on until vehicle is driven over 4 mph (6 km/h).
Continues until ignition
is turned off
(2) (2) (2) (2)
(2) (2) (2) (2)
8 Quick Blinks = Faults Cleared SYSTEM ID
SYSTEM ID SYSTEM ID SYSTEM ID SYSTEM ID
SYSTEM ID
Pause
4 s
Pause
4 s
SYSTEM ID SYSTEM ID
System Configuration Code 2: 4S/4M System
1002022a
S = Seconds
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