WABCO SMARTTRAC MM1543, Maintenance Manual

Page: 53 / 72

53
Appendix I
SPN Component FMI Fault Description Repair
803
ECU/System
component
3
ECU internal failure
• Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if the fault still persists,
it may indicate the ECU has failed.
5
6
806
Active brake
valve – rear
axle
5 Internal valve failure
• Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if the fault still persists,
it may indicate the unit has failed.
807
Active brake
valve – front
axle
5 Internal valve failure
• Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if the fault still persists,
it may indicate the unit has failed.
932
Inlet valve –
left front
5 Internal valve failure • Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if fault still persists, it
may indicate the unit has failed.
933
Inlet valve –
right front
5 Internal valve failure
934
Inlet valve –
left rear
5 Internal valve failure • Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if the fault still persists,
it may indicate the unit has failed.
935
Inlet valve –
right rear
5 Internal valve failure
938
Outlet valve –
left front
5 Internal valve failure • Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if fault still persists, it
may indicate the unit has failed.
939
Outlet valve –
right front
5 Internal valve failure
940
Outlet valve –
left rear
5 Internal valve failure
• Reset the ECU by cycling the ignition or by using the reset
option in the TOOLBOX™ Software.
• If the fault persists, check the ABS ECU powers and
grounds.
• After checking powers and grounds, if fault still persists, it
may indicate the unit has failed.
941
Outlet valve –
right rear
5 Internal valve failure