lock SSANGYONG KORANDO 2013 Service Manual

3660-01
4. COMPONENTS
HPT 6A/T (6F24)
One-way clutchTorque converter
(with slip lockup)
Oil pumpHarness
Valve bodySide gearDriven gear

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2) Transaxle Cooling
The transaxle cooling system ensures rapid warm-up and constant operating temperature resulting in
reduced fuel consumption and refined shift quality.
It also includes a cooler by-pass within the hydraulic system to allow sufficient lubrication to the transaxle
drivetrain in the event of a blockage in the transaxle cooler.
3) Shift Strategy
Gear Change
Transaxle gear change is controlled by the
TCU. The TCU receives inputs from various
engine and vehicle sensors to select shift
schedules and to control the shift feel and
torque converter clutch (TCC) operation at each
gear change.
Coast down
Coast down down shifts occur at 0% pedal
when the vehicle is coasting down to a stop.
Torque Demand
Torque demand down shifts occur
(automatically) when the driver demand for
torque is greater than the engine can provide at
that gear ratio. If applied, the transaxle will
disengage the TCC to provide added
acceleration.

4. LIMP HOME MODE
When the transaxle is defective
In the event of a system fault, the TCU also provides for failure mode effect control (FMEC) to maintain
maximum functional operation of the transaxle. (There are 3 FMEC modes, mechanical limp-home
mode, electrical limp-home mode, limp-home mode C.)
In the event of a total loss of control or electrical power, the basic transaxle functions (Park, Reverse,
Neutral and Drive) are retained. The 4th and reverse gear ratios with the torque converter clutch in the
unlocked state are the retained gear states the hydraulic system supports without any electrical
assistance. (Mechanical limp-home)
If the speed sensor circuit is failed, the gear is fixed to 4th gear, but manual shifting
If the inhibitor switch signals are invalid, shifting to1st and 2nd gear is forbidden. (Limp-home C)
The TCU communicates with other vehicle electronic control modules by the controller area network
(CAN). If a major fault is developed, the transaxle may not accomplish the intelligent shift control. The
TCU controls the transaxle with preset values.
The TCU also provides for transaxle diagnostics, which meet the requirements of OBD II regulation,
monitoring all components which may effect vehicle emissions. 1.
2.
3.
4.
5.
6.
Towing the automatic transaxle equipped vehicle
Flat-bed equipment is the best method of moving a disabled vehicle to avoid any damages.
For AWD vehicle: The vehicle must be towed with a wheel lift and dollies or flatbed equipment with
all the wheels off the ground.
For 2WD vehicles: It is acceptable to tow the vehicle with the rear wheels on the ground without
dollies and the front wheels off the ground. When being towed by a commercial towtruck and
wheel dollies are not available, the front of the vehicle should be lifted, not the rear. -
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2) Operation in Each Gear Position
(1) Neutral/Park
REAR) P/C locked
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
P.N

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(2) Reverse (3.385)
Middle planetary gear locked, middle sun gear rotated
When the sun gear rotates with the planetary gear locked in middle planetary gear set, the annulus
gear (front planetary gear) rotates in reverse direction with decreased speed and the power flows
through the front planetary gear.
The rear planetary gear set reduces the rotating speed of rear & front annulus gears and the front
planetary gear set rotates the front sun gear in reverse direction without load. -
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
R

(3) 1st Drive Gear (4.212)
Front sun gear and middle & rear planetary gears locked, and rear sun gear always rotated
When the rear sun gear rotates, the rear planetary gear set reduces the speed at first, and then the
reduced power is transferred to rear & front annulus gear. The power is secondarily reduced at front
planetary gear locked with sun gear and flows to front planetary gear.
At this moment, the middle sun gear rotates in reverse direction without load (idling) by the rotation of
middle annulus gear integrated with front planetary gear. -
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
1ST
Operated below 5 km/h of vehicle speed O :

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(4) 2nd Drive Gear (2.637)
Front sun gear and middle sun gear locked, rear sun gear always rotated
When the sun gear rotates, the power is transferred to the rear & front annulus gears, and then the
reaction power from the front planetary gear and middle annulus gear locked with sun gear is
transferred to middle & rear planetary gear to circulate the power. Accordingly, the power flows
through the front planetary gear while keeping the balance. -
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
2nd

(5) 3rd Drive Gear (1.800)
Front sun gear locked, middle & rear sun gear rotated
When the middle sun gear and rear sun gear rotate, the power is transferred to the rear & front
annulus gears, and then the reaction power from the front planetary gear and middle annulus gear
locked with sun gear is transferred to middle & rear planetary gear to circulate the power.
Accordingly, the power flows through the front planetary gear while keeping the balance. -
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
3rd

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(6) 4th Drive Gear (1.386)
Front sun gear locked, rear planetary gear and rear sun gear rotated
When the overdrive clutch (OD/C) operates, the carrier is engaged with sun gear in rear planetary
gear set and the power with 1:1 ratio flows to the front planetary gear locked with sun gear after
passing through the rear & front annulus gears.
At this moment, by operation of speed-reduced annulus gears and carrier in 1:1 ratio, the middle sun
gear in middle planetary gear set increases its speed without load (idling). -
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
4th

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(8) 6th Drive Gear (0.722)
Middle planetary gear rotated, middle sun gear locked
When the sun gear is locked in middle planetary gear set and the planetary gear rotates, the middle
annulus gear increases the speed and the power is transferred to front planetary gear.
The rear planetary gear set rotates in 1;1 ratio (same in 4th & 5th gears). However, the front
planetary gear set is not related to that, and the front sun gear increases its speed without load
(idling). -
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Power flow
Description 35R C OD C 26 B UD B LR B O.W.C
6th