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01-53680-01
2. FEATURES AND SPECIFICATIONS
1) Specifications
Description DSI M78 (6-speed) Remarks
Gear ratio1st 3.53:1
2nd 2.14:1
3rd 1.48:1
4th 1.16:1
5th 0.87:1
6th 0.68:1
Reverse 3.09:1
Transmission flui
dFluid Fuchs FES 209-3292 ATF
Capacity Approx. 9.5 L
Change interval Check the fluid at every
30,000 km or 1 year, and
change it if necessary.Under the severe driving
conditions, change the fluid
at every 60,000 km.
Resistance of oil
temperature
sensor-20 430.7 ~ 533.9 kΩ
0 146.8 ~ 175.7 kΩ
20 56.74 ~ 65.86 kΩ
100 3.201 ~ 3.399 kΩ
Gear position
sensor1 -
2 -
3 -
D 2.686 kΩ ± 8%
N 5.036 kΩ ± 8%
R 8.953 kΩ ± 8%
P 16.786 kΩ ± 8%
Severe driving conditions? *
Towing a trailer or off-road driving (Inspect the
leak of fl uid at any time, occasionlly)
Taxi, patrol service or delivery service
(extended idling and excessive driving with low
speed)
Frequent stop-and-go traffi c, extended idling,
short driving distance -
-
-Driving in a hilly or mountainous terrain,
sandy, or dusty area
Driving frequently at high speed over 170
km/hour
Driving frequently in area where heavy
traffi c under the ambient temperature
above 32°C -
-
-
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01-16
4. LIMP HOME MODE
In case of transmission malfunction ▶
If a serious fault occurs in the automatic transmission, the TCU enters the limp home
mode to secure safe driving and protect the automatic transmission.
As power is no longer supplied to the solenoid, the current basic function (P, R, N, D) is
maintained and the 4th gear can be maintained only by the operation of the hydraulic
system without electrical operation.
The ECU communicates with other electric modules with CAN. If a serious fault occurs, the
transmission automatically enters the limp home mode for service.
The TCU monitors all factors which can affect to the performance of the transmission and
diagnose the system according to OBD II regulation. 1.
2.
3.
4.
In case of overheated transmission ▶
The TCU enters the limp home mode when the batter voltage drops below 8 V.
If the transmission is overheated, the shift pattern is changed to the hot mode to cool the
transmission more efficiently.
While the transmission is overheated, the selector lever symbol and engine temperature
warning lamp on the instrument cluster blink until the transmission is cooled down to the
normal operation temperature. If the transmission is excessively overheated, the gear
cannot be shifted but remains in the neutral position. 1.
2.
3.
Towing the vehicle with A/T ▶
The best way to transport the vehicle is to load it to a truck and transport it, especially if the
vehicle is 4WD.
If towing the vehicle with the propeller shaft connected, the transmission or oil pump of
transfer case may malfunction, resulting in internal damage due to poor lubrication. -
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01-213680-01
Pressure Modulation ▶
To provide a higher level of shift comfort and durability, the hydraulic pressure in the shift related
friction elements of the transmission must be matched accurately to the input torque to
transmission. This hydraulic pressure is composed of a hydraulically pre-set basic pressure and a
control pressure which is set by one of the variable bleed solenoids.
The transmission input torque can be directly calculated from the following operating parameters:
engine torque signals
engine speed or any signal transmitted from ECU through CAN lines
converter slip -
-
-
Separate pressure characteristics for each gear change make it possible to adapt precisely to the
particular shift operation.
5) Shift Mode Selection by TCU
The driver can select Standard (S) or Winter mode (W) with the mode switch. TCU automatically
changes the shift mode according to the transmission oil temperature, uphill or downhill gradient,
and altitude to keep the good driving conditions.
Standard Mode (S) ▶
Uphii and Downhill Mode ▶
Altitude Mode ▶ Standard Mode is selected when setting the mode switch in Standard (S) position with the gear
<009a008c0093008c008a009b00470093008c009d008c0099004700900095004702c8006b02c9004700880095008b0047009b008f008c0047009b009900880095009a00940090009a009a00900096009500470096009000930047009b008c00940097008c00
990088009b009c0099008c0047009000950047009500960099>mal operating range. Proper shift
timing provides the optimized fuel economy and good driving conditions.
In this mode, the operating points of torque converter lock-up clutch and the shifting points are
adjusted according to the vehicle weight.
In this mode, the shifting points are automatically adjusted according to the altitude to compensate
the engine torque changes due to barometric pressure and temperature.
Page 623 of 828
04-8
3. DUAL MASS FLYWHEEL (DMF)
The dual mass flywheel (DMF) is of having a mass divided into two halves.
While one mass is connected to the engine crankshaft, which is affected by the mass moment of
inertia of the engine, the other mass is affected by one of the transmission.
The divided dual masses are connected to the coil spring and damping system internally.
The DMF has the following benefits: ▶
Reducing fuel consumption by lowering engine speed
Reducing rattling noise and vehicle vibration in all driving ranges
Reducing synchronization wear
Facilitating gear change
Protecting power train parts by preventing excessive load from being delivered -
-
-
-
-
Primary flywheel
Secondary flywheel
Arc damper spring
Torque limiter
Ring gear 1.
2.
3.
4.
5.
Page 651 of 828

09-34850-01
1. SPECIFICATION
Unit Description Specification
Front brake Type Ventilated disc
Outer diameter of discØ294 mm
Inner diameter of caliper cylinderØ43.0 x 2 mm
Thickness of disc 28 mm (wear limit: 25.4 mm)
Area of brake pad Above 60 cm2
Pad wear indicator Mechanical type
Rear brake Type Solid disc
Outer diameter of discØ299 m
Thickness of disc 10.4 mm (wear limit: 8.5 mm)
Area of brake pad Above 28.8 cm2
Pad wear indicator Mechanical type
Brake booster Type Vacuum assist type
Size8” + 9” (Tandem)
Master cylinder Type Tandem type(integrated level sensor)
Inner diameter of cylinderØ26.99 mm
Brake pedal Maximum operating stroke 150 mm
Pedal ratio 4 : 1
Free play 3 to 10 mm
Parking brake Type Mechanically expanded rear lining
Operating type Hand operated type
Inner diameter of drumØ190 mm
Brake oil Specification DOT 4
Capacity 0.7 to 0.8 liters
Service Interval: Change the brake oil at every 2 years
DOT?
It is the quality grade of brake fluid established by US Department of Transportation.
Page 665 of 828
09-174850-01
Brake Fluid ▶
Brake Fluid Type ▶ 1. Color
Ligh gold (New oil) → Brown → Black -
2. Service Interval/Type
Change: every 2 years, Type: DOT4
The water in the brake fluid has an adverse effect to the brake system. If the fluid contains
around 3% of water, the boiling point of the brake fluid goes down by 25%. It will cause
the vapor lock frequently.
Water content in fluid: around 3% after 18 months, around 7~10% after few years
The water ib fluid makes the corrosion in the brake lines, deforms and deteriorates the
rubber components, brake calipers and pistons. -
DOT4: Brake fluid for premium vehicle. Lower water absorbing rate AND higher boiling point
than DOT3
Brake Fluid Level Check ▶
The brake fluid level should be between "MAX"
and "MIN" on the reservoir. If it is below "MIN"
mark, check for oil leaks and refill the reservoir
with the specified fluid.
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12-114610-01
Oil Change ▶
Open the power fluid reservoir cap and
drain the fluid completely with oil suction
device. To make it easy, turn the steering
wheel to its both ends several times.
Fill up the specified fluid into fluid reservoir
and bleed air from the steering system. 1.
2. Oil Level Check ▶
Place the vehicle on a level ground and
start the engine and let it run at idle speed.
Turn the steering wheel several times so
that the oil temperature reaches to normal
operating level (75~85˚C).
Place the steering wheel at straight ahead
direction.
Check the oil level in the power steering oil
reservoir. Adjust the oil level between MAX
and MIN. 1.
2.
3.
4.
If the difference between two
measurements is below 5 mm and the level
is between MAX and MIN level, it's normal.
If it is over 5 mm, bleed air from the
system. Check the fluid level on a level ground with
the engine turned off. The fluid level should
be between the MIN and MAX marks on the
reservoir cap gauge.
below 5 mm
Engine idling Engine running
Oil typeATF Dexron II or III
Capacityapprox. 1ℓ (including
reservoir)