SsangYong Rexton. Service manual — part 592
SSANGYONG Y200
5D2-16 TRANSFER CASE - TOD
DEFINITION OF TERMINOLOGY
Definitions
Rear Speed Sensor
Description
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 propeller shaft inside the Transfer
Case.
Each rotation of the rear propeller shaft will result in 30 speed sensor pulse.
A Hall Effect speed sensor which produces a square wave. 0-5Vdc signal in response
to a rotating 30 tooth wheel coupled to the front propeller shaft inside the Transfer
Case.
Each rotation of the front propeller shaft will result in 30 speed sensor pulse.
An Electromagnetic clutch used to control the amount of torque applied to the front
propeller shaft.
TOD is an abbreviation of Torque On Demand and means that the torque is transferred
according to the operating condition.
TPS is an abbreviation of Throttle Position Sensor. For MSE engine, the potentiometer
in the throttle actuator acts as TPS.
PWM is an abbreviation of Pulse Width Modulation and is a type of output value
control by adjusting pulse width.
Duty Cycle is the time the EMC is on divided by the period in which it is being modu-
lated.
A minimum amount of duty cycle applied to the EMC.
A condition where the front propeller shaft is turning at a rate which is faster than the
rear propeller shaft.
A condition where the rear propeller shaft is turning at a rate which is faster than the
front propeller shaft.
The highest (numerically lowest = 1 : 1) gear ratio between the input and outputs of
the Transfer Case.
The lowest (numerically highest = 2.48 : 1) gear ratio between the input and outputs of
the Transfer Case.
Front Speed Sensor
EMC (Electromagnetic
Clutch)
TOD
TPS (Throttle Position
Sensor)
PWM
Duty Cycle
Touch-off
Front Overrun
Rear Overrun
High Range
Low Range
YAD5D120
TRANSFER CASE - TOD 5D2-17
SSANGYONG Y200
Definitions
4H/4L Switch
Shift Motor
Position Encoder
Neutral Safety Switch
Shift Inhibit Speed
Description
A switch which selects the desired gear ratio.
Electric motor which changes the Transfer Case range.
A set of 4 Gray code switches which provide feedback to the TOD indicating the
position of the Shift Motor.
A switch on vehicles equipped with a manual transmission which indicates that the
clutch pedal is depressed.
A switch on vehicles equipped with an automatic transmission which indicates that the
transmission is in neutral.
The vehicle speed above which Transfer Case shifts are disallowed. Vehicle speed is
indicated by propeller shaft speed measurement.
SSANGYONG Y200
5D2-18 TRANSFER CASE - TOD
CONTROL UNIT
Input/Output diagram
TOD control unit and main wiring harness is linked by
30 pin connector. Each pin joins with switch and
actuator whose details refer to the below diagram.
YAD5D130
TRANSFER CASE - TOD 5D2-19
SSANGYONG Y200
Description
TOD control unit ground
TOD control unit battery supply : (Fuse No 13,20A)
Ignition ON / OFF
Position encoder 1
: check of shift motor position
Position encoder 2
: check of shift motor position
Position encoder 3
: check of shift motor position
Position encoder 4
: check of shift motor position
Transfer case mode input
Check of neutral gear position in Auto T/M
5V supply (TPS / speed sensor)
Front speed sensor signal input
Rear speed sensor signal input
ABS ON / OFF
Brake Switch ON/OFF Signal Input
CAN bus low line
CAN bus high line
Connect to Diagnostic Connector No. 15
Motor output port
-
LO to HI : join with battery
-
HI to LO (or motor brake) : join with ground
Motor output port
-
HI to LO : join with battery
-
LO to HI (or motor brake) : join with ground
TOD Output
When the transfer case is in “4L” mode, illumi-
nates “4L” indicator.
Position encoder ground
Illuminates “4L” indicator “4WD check lamp” turns
ON Upon defect ; Ground circuit
Ground for speed sensor / TPS
Pin No.
17,18
4,19
5
27
10
28
30
9
24
12, 16
11
29
25
26
22
23
20
3
21
6
7
13
Pin Name
Ground
Input
Ignition
Position 1
Position 2
Position 3
Position 4
4H/4L Switch
Auto T/M Neutral
Speed Voltage Supply
Front Speed
Rear Speed
ABS Operation
Brake Switch
CAN-L
CAN-H
K-LINE (1)
Motor LO-HI
Motor HI-LO
EMC
4L Illumination
Position Return
Self Diagnosis Display
Speed
Classification
Power Supply
Signal Input
Signal Output
(1) K-LINE : It means that Communication line for coding and diagnosis with diagnostic scanning tool.
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