1998 SSANGYONG MUSSO lock

5D1-34 TRANSFER CASE (PART TIME 4408)
External Electric Shift
1. Align the motor with shift shaft and position the motor
assembly onto the cover.
2. Install the motor to the shift shaft and contact cover androtate
the motor clockwise direction to check correctengagement.
6 Bolt
7 Washer
8 Bolt
9 Sensor and Harness Bracket
10 Sensor Assembly
14 Speed Sensor
12 O-ring
13 Motor Assembly
25 Cover
13 Motor Assembly
103 Shift Shaft
3. Insert the 0-ring on the speed sensor speed sensor
assembly to the cover.
4. Install the bracket to the motor assembly and tighten 3bolts.
Tightening Torque 8 -11 Nm

TRANSFER CASE (PART TIME 4408) 5D1-37
Inspection and Repair
1. 4H and 4L indicator light inspection
lWhen turn the ignition switch to "ON" position, 4H and
4L indicator light will turn on for 0.6 second and will turn
off immediately.
Notice
If indicator light does not turn on, check bulb, wiring harness
and TCCU.
2. TCCU inspection
Pin No.
Operation Condition
4H or 4L
2H
4H indicator light ON
4H indicator light OFF
2H or 4H
4L
Clutch pedal applied
Clutch pedal released
4L indicator light ON
4L indicator light OFF
Motor OFF
Motor ON
Motor OFF
Motor ON
Auto locking hub ON
Auto locking hub OFFVoltage(V)
4.75 - 5.35
0 - 0.50
< 1.00
> 11.00
4.75 - 5.35
0 - 0.50
< 0.50
> 11.00
< 1.00
> 11.00
< 1.00
> 11.00
< 1.00
> 11.00
> 11.00
< 1.00 J1 - 7
J1 - 8
J1 - 13
J1 - 14
J1 - 15
J1 - 16
J1 - 17
J1 - 23
Notice
lDC 12V for the TCCU operation should be maintained.
lIn case of J1-8 and J1-15, indicator light will turn on for 0.6
second when turn the ignition switch ON.
lIf 4H and 4L indicator lights remain turned on when turn the
ignition switch on or during driving, perform the TCCU
diagnosis.

5D2-4 TRANSFER CASE (TOD)
FUNCTION DESCRIPTION
lTOD System Select Mode (4H and 4L)
4H is the mode when drive normally of which gear ratio is 1:1 and 4L mode distributes power to front and rear
wheels 50:50 of which gear ratio is 2.48:1.
lTOD System Function (select 4H mode)
TOD system controls clutch mechanism to comply with rotation in front and rear propeller shaft and if its difference
exceeds the permissible range, corresponding power is distributed into front wheel through EMC (Electro-Magnetic
Clutch).
Hall effect sensor signals speed on front and rear propeller shafts going through with TOD control unit.
Transfercase clutch coil is activated by variable current on exceeding difference of speed in front and rear propeller
shafts.
lFunction of 4L Mode
When select 4L mode, EMC is locked to apply maximum torque into front and rear propeller shafts. Shift motor
rotates also 4L position by rotation of cam thus propeller shaft torque changes from 1:1 to 2.48:1 by planetary
gear set.
lShift Motor
It locates backside transfer case, which drives rotary helical cam.
When mode select switch changes to 4L, shift fork is on position for 2.48:1 by rotation of helical cam.
lTransfer Case
TOD transfer case distributes power into front and rear axle by operation of 4H/4L switch and shift motor.
Shifting 4H to 4L, is performed towards reducing HI-LO collar by means for connection HI-LO shift fork with
output shaft in order to join with planetary gear. Torque transmits input shaft then sun gear rotating front planetary
gear. Front planetary gear join with output shaft and drives LO position.

TRANSFER CASE (TOD) 5D2-5
Definitions
Rear Speed Sensor A Hall Effect speed sensor which produces a square wave. 0-5Vdc signal in
response to a rotating 30 tooth wheel coupled to the rear propshaft inside the
Transfer Case. Each rotation of the rear propshaft will result in 30 speed sensor
pulse.
Front Speed SensorA Hall Effect speed sensor which produces a square wave. 0-5Vdc signal in
response to a rotating 30 tooth wheel coupled to the front propshaft inside the
Transfer Case. Each rotation of the front propshaft will result in 30 speed sensor
pulse.
EMC An Electromagnetic clutch used to control the amount of torque applied to the
front propshaft.
TOD
TMTorque on DemandTM.
Duty Cycle Duty Cycle is the time the EMC is on divided by the period in which it is being
modulated.
Touch-off A minimum amount of duty cycle applied to the EMC.
Front OverrunA condition where the front propshaft is turning at a rate which is faster than the
rear propshaft.
Rear Overrun A condition where the rear propshaft is turning at a rate which is faster than the
front propshaft.
High RangeThe highest (numerically lowest = 1 :1) gear ratio between the input and outputs
of the Transfer Case.
Low RangeThe lowest (numerically highest = 2.48:1) gear ratio between the input and outputs
of the Transfer Case.
4H/4L Switch A switch which selects the desired gear ratio.
Shift Motor Electric motor which changes the Transfer Case range.
Position Encoder A set of 4 Gray code switches which provide feedback to the TCCU indicating the
position of the Shift Motor.
Clutch Interlock Switch A switch on vehicles equipped with a manual transmission which indicates that
the clutch pedal is depressed.
Neutral Safety Switch A switch on vehicles equipped with an automatic transmission which indicates
that the transmission is in neutral.
Shift Inhibit Speed The vehicle speed above which Transfer Case shifts are disallowed. Vehicle speed
is indicated by propshaft speed measurement.

TRANSFER CASE (TOD) 5D2-13
Speed Sensor/Clutch Coil and Motor Connector
Speed senso /clutch coil and shift motor connector locate upper
backside transfer case (upper part of shift motor).
- Shift motor connector : Black
- Speed sensor and clutch coil connector : White
Shift Mtor Connector Speed Sensor/Clutch Coil Connector
Rear View for Connector
Pin
A
B
C
D
E
F
GFunction
Position 4
Motor (Counter-Clockwise)
Position 3
Position 2
Position 1
Position Retum
Motor (Clockwise)Pin
H
I
J
K
L
M
NFunction
Clutch Coil (EMC)
Front Speed Return
Front Speed
Front Speed Sensor Supply
Rear Speed Sensor Supply
Rear Speed
Rear Speed Return Rear View for Connector

5D2-14 TRANSFER CASE (TOD)


Motor HI-LO(clockwise)
Motor LO-HI(counterclockwise)
PIN 13
CONTROL UNIT DIAGRAM
TOD CONTROL UNIT
14

TRANSFER CASE (TOD) 5D2-35
Removal & Installation Procedure
1. Disconnect (-) cable from battery.
2. Lift on vehicle and make sure on safety.
Notice
Be careful for catalytic converter due to high temperature
after driving or engine running.
3. Prepare a vessel to drain transfer case and manual
transmission oil.
4. Release drain plug and drain transfer case and manual
transmission oil.
If planar damper is installed, unscrew 4 bolts and remove
the planar damper.
Notice
Oil drain should be along with whole transfer case
disassembly and assembly.
5. Disconnect transmission extension wiring connector back
side transfer case.
Notice
When disconnect connector, make sure on direction of
locking tab towards inside.
6. Disconnect shift motor/clutch coil connect (Black 7 pin)
connector upper backside.
7. Disconnect front and rear speed sensor connector (white
7 pin).
8. Disconnect speedometer sensor connector right upper
side.
9. Disconnect breather tube front upper side transfer case
(upper connecting point of transfer case and front
propeller).
10. Prepare hydraulic jack and support transfer case assembly.

5D2-38 TRANSFER CASE (TOD)
SPEED SENSOR IN FRONT AND
REAR PROPELLER SHAFT
Replacement Procedure
1. Disconnect (-) cable from battery.
2. Detach shift motor assembly.
3. Disconnect front and rear speed sensor connector (white 3
pin) upper backside transfer case.
4. Disconnect speed sensor connect from locking sleeve by
pushing.
5. Disconnect wire stick cap from the detached connector.
6. Unscrew rear speed sensor mounting bolt (M10) from upper
side of rear case flange.
7. Detach sensor from transfer case by lifting up using tool.
Notice
When disconnect sensor, make sure on adequate pressure
due to sensitiveness with shock.
8. Disconnect taping from both protection tube ends that wrap
3 wires of speed sensor and 1 wire of clutch coil.
9. Disconnect tube.