PART 7: STARTING & OPERATING THE VEHICLE ANTI-LOCK BRAKING SYSTEM OPERATING INFORMATION
(R10/06) Y53-6007 – 91 –
CAUTION:
• The center pin of the 7-way trailer light line
may be constantly powered for ABS. Make
sure it will not accidently turn on trailer
equipment.
• Do not splice into the non-switchable “Aux-
iliary” circuit on the primary 7-way trailer
light line. Doing so may cause the trailer
ABS to malfunction. This circuit is dedi
-
cated for trailer ABS power. To add a switch-
able “auxiliary” circuit, contact a Kenworth
Dealership.
NOTES:
• A “properly connected” ABS-equipped trailer is
– a trailer with PLC hooked up to the J560 con-
nector
– a trailer without PLC that is hooked up to an
optional ISO 3731 connector
• For doubles or triples: PLC does not distinguish
between trailers. An ABS problem in any trailer
will activate the trailer ABS warning lamp.
2. If an ABS-equipped trailer is properly connected, the
trailer ABS warning lamp will remain illuminated for a
few more seconds while the trailer ABS is tested.
• If no trailer ABS problems are detected, the lamp will
go off.
• If a trailer ABS problem is detected, the lamp will
remain on. The driver should have the trailer’s ABS
problem corrected before the vehicle is driven with
that trailer attached.
Advanced ABS with Stability Control
This vehicle may be equipped with an optional Electronic
Stability Program (ESP). ESP is a feature for ABS-
equipped vehicles that reduces the risk of rollovers, jack
-
knifing and other loss of control. ESP features include Roll
Stability Program (RSP) and Yaw Control.
During operation, the ECU of the Bendix Advanced ABS
system constantly compares performance models to the
vehicle’s actual movement, using the wheel speed sen
-
sors of the ABS system, as well as lateral, yaw, and steer-
ing angle sensors. If the vehicle shows a tendency to
leave an appropriate travel path, or if critical threshold val
-
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