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150 SAFETY
NOTE:
During HDC the +/- shifter input is used for HDC
target speed selection, but will not affect the
gear chosen by the transmission. When actively
controlling HDC the transmission will shift
appropriately for the driver-selected set speed
and corresponding driving conditions.
Driver Override
The driver may override HDC activation with
throttle or brake application at anytime.
Deactivating HDC
HDC will be deactivated but remain available if
any of the following conditions occur:
Driver overrides HDC set speed with throttle
or brake application
Vehicle speed exceeds 20 mph (32 km/h)
but remains below 40 mph (64 km/h)
Vehicle is on a downhill grade of insufficient
magnitude, is on level ground, or is on an
uphill grade
Vehicle is shifted to PARK (P)
Disabling HDC
HDC will be deactivated and disabled if any of
the following conditions occur:
The driver pushes the HDC switch
The driveline is shifted out of 4L Range
The park brake is applied
Driver door opens (Driver door opens if doors
are attached or driver seatbelt is unbuckled if
doors are detached)
The vehicle is driven greater than 20 mph
(32 km/h) for greater than 70 seconds
The vehicle is driven greater than 40 mph
(64 km/h) (HDC exits immediately)
HDC detects excessive brake temperature
Feedback To The Driver
The instrument cluster has an HDC icon and the
HDC switch has an indicator light, which offers
feedback to the driver about the state HDC is in.
The cluster icon and switch indicator light will
illuminate and remain on solid when HDC is
enabled or activated. This is the normal oper-
ating condition for HDC.
The cluster icon and switch indicator light will
flash for several seconds then extinguish
when the driver pushes the HDC switch but
enable conditions are not met.
The cluster icon and switch indicator light will
flash for several seconds then extinguish
when HDC disables due to excess speed.
The cluster icon and switch indicator light will
flash when HDC deactivates due to over-
heated brakes. The flashing will stop and
HDC will activate again once the brakes have
cooled sufficiently.
Hill Start Assist (HSA)
The Hill Start Assist (HSA) system is designed to
mitigate roll back from a complete stop while on
an incline. If the driver releases the brake while
stopped on an incline, HSA will continue to hold
the brake pressure for a short period. If the
driver does not apply the throttle before this
time expires, the system will release brake pres-
sure and the vehicle will roll down the hill as
normal.
WARNING!
HDC is only intended to assist the driver in
controlling vehicle speed when descending
hills. The driver must remain attentive to the
driving conditions and is responsible for
maintaining a safe vehicle speed.
20_JL_OM_EN_USC_t.book Page 150
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