2
Diagnostics, Troubleshooting and Testing
6
WABCO
Maintenance Manual MM-1306 (Revised 08-18)
NOTE:
Use of non-OEM bumpers, hoods, and brush guards may
result in driveability concerns and affect system performance, and in
the worst case, result in DTCs or the disabling of the CMS.
Troubleshooting Guide
When ignition power is switched on, a screen similar to the one
shown in Figure 2.3 will be displayed for several seconds.
Figure 2.3
If the display does not light up when the ignition is on, check the
power and ground connections. This can be caused by problems in
the electrical harness or a faulty display. Refer to Display Harness
Electrical Checks in the Electrical System and Harness
Troubleshooting Section.
If the display lights up but is hard to read, adjust the brightness and
contrast settings.
If the display shows an amber error screen, use the following Error/
System Failure Screen Repair Table to determine the correct repair
action.
NOTE:
The system is sensitive to faults in other vehicle systems
and will set a DTC as a reaction. As such, it is recommended that all
faults in any other vehicle ECUs are diagnosed and repaired prior to
diagnosing OnGuard™ and OnGuardACTIVE™ DTCs.
Figure 2.3
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OnGuard™
Collision Mitigation System
