SsangYong Actyon Sports II. Manual — part 116

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2) Mode “M” (Manual Shift Mode)

This allows the driver to define the highest possible gear by selecting "+" or "-" on the gear selector when

the lever is in the "M" position. When the lever is first moved to the manual "M" position the transmission

will select the lowest possible gear.

When maximum engine rpm is reached the transmission will upshift automatically regardless of the

driver selected limit. 4WD models with low range will not automatically upshift when low range is

selected.

1st gear position

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2nd gear position

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3st gear position

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4th gear position

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5th gear position

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6th gear position

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Use on a rugged road, mountain path and steep hill. Engine braking effect on steep hill is

available.

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Use on a long and gentle slope. 2-1 automatic kickdown shift is available. Engine braking effect is

available.

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Use on a long and gentle slope. 3-2 and 2-1 automatic kickdown shift is available. Engine

braking effect is available.

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Use on a long and gentle slope. 4-3, 4-2 and 4-1 automatic kickdown shift is available.

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5-4 and 5-3 automatic kickdown shift is available.

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6-5 and 6-4 automatic kickdown shift is available.

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Kickdown Function

If you need to accelerate rapidly, depress the accelerator pedal completely to the floor.

Then, a one- or two-lever gear will automatically be engaged. This is called the Kickdown function.

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4. LIMP HOME MODE

In case of transmission malfunction

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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.

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2.

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In case of overheated transmission

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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.

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Towing the vehicle with A/T

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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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5. ELECTRONIC CONTROL SYSTEM

1) Overview

The transmission control unit (TCU) and its input/output networks control the operations of transmission:

Shift timing

Line pressure

Clutch pressure (shift feel)

Torque converter clutch

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In addition, the TCU receives input signals from certain transmission-related sensors and switches. The

TCU also uses these signals when determining transmission 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. To

accomplish this, the TCU operates six variable bleed control solenoids and four ON/OFF solenoids to

control the operations of transmission.

2) Transmission Control Unit (TCU)

The transmission control unit (TCU) is mounted under the driver's seat and controls the operation of the

transmission.

TCU processes the analog information from the internal sensors and the digital information through CAN

communication lines. TCU monitors all the input and output signals. If there is any failure, TCU changes
the system to “Limp Home Mode” and alerts to the driver through the warning lamp on the

instrument cluster.

(1) Hard-wired (Analog) Input/Output

Input/Output Data between TGS Lever and TCU

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Position and conditions of gear select lever

Driving moded (Winter or Standard)

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Position of inhibitor switch

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Input/Output Data between Inhibitor and TCU

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6 control signals for variable bleed solenoid

4 control signals for ON/OFF solenoid

Transmission input speed

Transmission output speed

Transmission oil temperature

EMM (Embeded Memory Module)

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Input/Output Data between Automatic Transmission and TCU

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Input/Output Data between Self Diagnostic Connector and TCU

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Various DTC codes and TCU information

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(2) CAN Input/Output

TCU receives and sends the data among the units through P-CAN communication.

CAN Input/Output Data between Engine ECU and TCU

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