Bendix Commercial Vehicle Systems WINGMAN ACB ACTIVE CRUISE W/BRAKING - Manual (Page 15)

15
Narrowing Down the Problem (3.2)
Questions Next Steps
Does the mounting bracket look damaged or
tampered with? Other than expected surface scratches or some discoloration over time, there
should be no visible damage to the radar sensor bracket assembly. If so, realign
the radar sensor vertically and laterally. If radar sensor alignment can not be held in
place, the bracket assembly must be replaced. Verify the bumper is not damaged.
•
Check the Vertical Alignment (6.07) and adjust if needed.
• Check the Lateral Alignment (6.09) and adjust if needed.
The Radar Sensor Mounting - The radar sensor needs a solid mounting surface
in order to hold the alignment. If the bumper or mounting cross member is
damaged, replace it fi rst, then align the radar sensor.
Did the radar sensor currently on the vehicle
come from another vehicle? The radar sensor may be incompatible with the new vehicle. Follow Section
1.10: Radar Sensor Interchangeability procedure and check system trouble codes
with Bendix
® ACom ® Diagnostics software.
Read Section 4.3: Diagnostic Trouble Codes.
With cruise control set, does the system
consistently apply the foundation brakes
when a forward vehicle slows? This is normal operation. Continue asking the driver questions to diagnose
the problem. The radar sensor may be blocked or misaligned. The service
technician will need to check trouble codes as well.
•
Check the Vertical Alignment (6.07) and adjust if needed.
• Check the Lateral Alignment (6.09) and adjust if needed.
The Radar Sensor Mounting - The radar sensor needs a solid mounting surface
in order to hold the alignment. If the bumper or mounting cross member is
damaged, replace it fi rst, then align the radar sensor.
Read Section 4.3: Diagnostic Trouble Codes.
Does a diagnostic trouble code (DTC) seem
to occur when driving through the desert
or in barren areas (no road signs, trees or
vehicles)? In normal operation, the active cruise with braking feature of Bendix ® Wingman ®
ACB system may “go dormant” if it hasn’t detected a metallic object after a pre-
determined period. This is rare, but most likely to occur when driving in deserts or
barren areas. If the system does “go dormant,” Wingman ACB provides a visible
warning to the driver. In addition, the vehicle also will drop out of cruise mode,
providing an audible and/or visual warning to the driver as well. The driver must
actively re-engage the vehicle’s cruise control. Once the desired cruise speed is
set, the active cruise with braking feature of Wingman ACB will resume operation.
When metallic objects are again detected by the Wingman radar sensor, the
trouble code previously recorded in the Wingman system will clear automatically.
Does the system seem to disengage after an
automatic braking event? This is normal operation. The driver must set or "resume" the cruise control once
again to regain the following distance function.
Does cruise control disengage sometimes
when the brakes come on and not at other
times? This is normal operation. When traveling with lightly loaded trailers, or “bobtail”, the
active cruise with braking feature of Wingman ACB may continue to function even
after an automatic brake application. No driver input is needed.
Does the connector or wiring appear
damaged? Wires can become corroded if the radar sensor is not plugged in properly. Clean
the connectors on the wire harness, as well as the radar sensor, and reattach. If
wires are chaffed, replace the wire harness. Also, check for trouble codes.
Read Section 4.3: Diagnostic Trouble Codes, and
Section 4.8: Troubleshooting Wiring Harnesses.
Does the system generate a diagnostic
trouble code going down a grade, but the
code goes away later? This is normal operation. The active cruise with braking feature of Wingman ACB
is not intended to be used on grades. If the system detects this, it will generate
a diagnostic trouble code (DTC). Verify there are no diagnostic trouble codes.
Proper downgrade driving techniques should be used.
Read Section 4.3: Diagnostic Trouble Codes.
Does the radar sensor have noticeable
damage beyond normal discoloration or
surface scratches? The radar sensor and bracket are very durable. However, if the radar sensor
housing or lens is cracked or broken, immediately look for trouble codes via
Bendix
® ACom ® Diagnostics (version 6.3 or higher) and replace the damaged
radar sensor. Read Section 4.3: Diagnostic Trouble Codes, and Section 6.02:
Radar Sensor Mounting
.
TABLE 4 - NARROWING DOWN THE PROBLEM (PAGES 14-15)