18
Diagnostics, Troubleshooting and Testing
Once the OnSide BSD LED indicator bulb check has been performed, drive the vehicle above 15 mph
(24.2 km/h) with a moving vehicle in your passenger side "blind spot zone" (Figure 6.5) and verify that
the OnSide BSD LED indicator is illuminated. As the vehicle exits the passenger side blind spot zone, the
OnSide BSD LED indicator should go out. The OnSide BSD LED indicator should always perform in this
manner, with or without turn signal activation.
Fig. 6.5
4016853a
For vehicles equipped with a WABCO OnGuard display, when the vehicle is traveling above 15 mph
(24.2 km/h), the right turn signal is activated, and a moving vehicle is detected in the blind spot zone, the
display will also provide warnings. In addition to the warning from the OnSide BSD LED indicator, there
will be an audible chirp heard and a visual "Blind Spot Alert" (Figure 6.6) warning message shown on the
display. The "chirps" and "Blind Spot Alert" warning message will continue as long as the vehicle is traveling
above 15 mph (24.2 km/h), the right turn signal is activated, and there is a moving vehicle in the passenger
side blind spot zone.
Fig. 6.6
4016854a
If the right turn signal is not activated, there will be no indication (audible or visual) from the
WABCO OnGuard display indicating that there is a moving vehicle in your passenger side
blind spot zone.
6.2 System Visual Inspection
Perform a visual inspection of the OnSide BSD system before proceeding with any diagnostics or repairs.
Ensure that the OnSide BSD radar sensor and fascia are not missing or visibly damaged, and are
mounted correctly and securely.
Verify that the OnSide BSD radar sensor and fascia are clean, with no buildup of snow, ice, dirt/mud,
insects or debris.
Ensure there are no loose or corroded connections, particularly where the OnSide BSD system harness
may have been spliced into the vehicle harness.