3 Diagnostics, Troubleshooting and Testing
25
Meritor WABCO Maintenance Manual MM-0112 (Revised 07-05)
Component Tests
Select Component Tests from the Tractor ABS Main Screen. A pull
down menu will appear. Figure 3.14.
Figure 3.14
NOTE: Components for test may also be selected from the icons on
the Tractor ABS Main Screen.
Select Valves from the pull down menu to select and cycle
individual ABS modulator valves. Then, listen to ensure the correct
valve is cycling. This is also helpful in verifying correct operation,
installation and wiring. Figure 3.15.
Figure 3.15
Select all valves from the menu to cycle all available ABS valves in
the order shown below.
Verification of the ATC valve is also available from this menu.
RSC Trailer Valve
Select RSC Trailer Valve from the pull down menu to cycle the RSC
trailer valve.
Do not activate the service brake while testing the RSC trailer
valve. Figure 3.16.
Figure 3.16
Press Start to begin the test. Figure 3.17.
Figure 3.17
Figure 3.14
Figure 3.15
4005308a
4005309a
Figure 3.16
Figure 3.17
4005310a
4005311a
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