Tod Wiring Diagram - Kia Sorento 2003 Technical Highlights

Section 5 • Drivetrain—Transfer Case
the TOD clutch pack are accomplished by activating
the magnetic clutch using a duty cycle, the shorter
the duty cycle, the less application pressure in the
clutch pack.
The TCCM monitors the operation of the TOD
system continuously. The TCCM is mounted under
the carpet on the passenger's side of the vehicle and
communication with it to monitor operating param-
eters and DTCs may be gained using the High Scan
Pro connected to either the 16-pin OBD2 connector
under the instrument panel or the 20-pin diagnostic
connector located in the engine compartment.
Similar to the Sorento part-time four-wheel-drive
system, the TOD system also has a 4L mode avail-
able when higher torque and lower speeds are pre-
ferred. Like the part-time system, the vehicle must
be stopped, the transmission placed in N, and the
selector switch moved to the 4L position. During 4L
operation, there is no adjustable torque distribution
in the TOD system and this mode should only be
used on driving surfaces that will allow some slip-
ping of the drive wheels to minimize tension buildup
between drive axles which potentially could damage
drivetrain components or cause vehicle instability.

TOD Wiring Diagram

22 revised version 3
The TOD system's advantage over the part time
four-wheel-drive system or other competitive hy-
draulically activated full-time four-wheel-drive
systems is the system's ability to constantly monitor
the operation of both drive axles for slipping and the
ability to electronically precisely adjust the amount
of torque being delivered to each drive axle to an
appropriate level. This enhances the Sorento's driv-
ing safety and stability regardless of rapid changes
in the driving surface from dry, clean pavement, to
mud, to ice or snow, to water covered. The driver
never needs to worry about putting the vehicle into
four-wheel-drive or taking the vehicle out of four-
wheel-drive to minimize wear on powertrain parts or
improve driving stability. The TOD system monitors
vehicle operation and instantly makes any necessary
drivetrain adjustments.
Fail-safe for "auto" mode is 0:100 power distribu-
tion for the front and rear axles. Fail-safe for "low"
mode is 50:50 power distribution.
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