SSANGYONG KORANDO 2013 Service Manual

3660-01
1st Gear State
The 1st gear state will display on the
instrument cluster. Unlike the normal 1st gear,
engine braking will be available in this manual
1st state. -
2nd Gear State
The 2nd gear state will display on the
instrument cluster. 2nd gear has engine braking
available. -
3rd Gear State
The 3rd gear state will display on the
instrument cluster. 3rd gear has engine
braking available. -
4th Gear State
The 4th gear state will display on the
instrument cluster. 4th gear has engine
braking available. -
5th Gear State
The 5th gear state will display on the
instrument cluster. 5th gear has engine
braking available. -
6th Gear State
The 6th gear state will display on the
instrument cluster. 6th gear has engine
braking available. -
STD type
SVC type

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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3660-01
5. TRANSAXLE ELECTRONIC CONTROL SYSTEM
1) General Information
The transmission control unit (TCU) and its input/output network control the following transmission
operations:
Shift timing
Line pressure
Clutch pressure (shift feel)
Torque converter clutch -
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also uses these signals when determining transaxle operating strategy. Using all of these input signals,
the TCU can determine when the time and conditions are right for a shift, or when to apply or release the
torque converter clutch. It will also determine the pressure needed to optimise shift feel.
2) TCU (Transmission Control Unit)
The transaxle control unit (TCU) is mounted
under the driver's seat and controls the operation
of the transaxle.
Internal sensors and signals received across the
CAN bus in analogue and digital forms such as:
Transaxle input speed
Transaxle output speed
Accelerator pedal position
Gear selector position
Engine torque
Engine speed
Transaxle fluid temperature
Brake pedal status
Engine oil temperature
Engine coolant temperature
Ambient air temperature
Barometric pressure -
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The TCU monitors all TCU inputs and outputs to confirm correct system operation. If a fault occurs the
TCU is able to perform default action and inform the driver of the problem through the instrument cluster
warning lights. Detailed information is available via trouble codes which can be read with the service tool.

6. CAN NETWORK
The TCU sends signals to be used by other vehicle systems via the CAN bus, such as:
Selector lever position
Selected gear state
Manual mode activation
Transaxle fluid temperature
Engine torque reduction requests -
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Schematic Diagram of Network Communication

3660-01
7. POWER TRANSFER
Power transfer modes are as follow:
Manual: 1st gear (position M)
Drive: 1st gear
Drive: 2nd gear
Drive: 3rd gear
Drive: 4th gear - limp home mode
Drive: 5th gear
Drive: 6th gear -
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1) Overview
Name Component
C1 OVER DRIVE CLUTCH
C2 35R CLUTCH
B1 LOW & REVERSE BRAKE
B2 2/6 BRAKE
B3 UNDER DRIVE BRAKE
1F 1-2 ONE WAY CLUTCH
GEARCLUTCH BRAKE
OWC Gear Ratio
OD 35R 26 LR UD
1ST
O O 4.212
2ND O O 2.637
3RD O O 1.800
4TH O O 1.386
5TH O O 1.000
6TH O O 0.772
REV O O 3.385
N.P O
(1) Gear Selection and Engagement Element
Operation when vehicle speed under 5kph *

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

3660-01
(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 :

3660-01
(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