SSANGYONG Y200 Manual page 1445

4. If the second attempt to return to the original
position fails the motor will be turned off, the "4WD
CHECK" lamp will be illuminated, and all future
shifts will be inhibited until the Ignition is cycled.
TOD TM System operation
The TODTM System is responsible for distributing
torque between the front and rear axles. The TOD
monitors the propeller shaft speeds, operating range
(High/Low), and ABS activity and then applies a
calculated amount of torque to the front axle by Pulse
Width Modulating the current applied to the EMC.
1. Touch-off Torque
The minimum EMC Duty Cycle is based on the
vehicle speed and throttle position.
The TOD receives the TPS signal from the following
sources:
On vehicles equipped with CAN, the TOD receives
the TPS signal from the CAN bus.
2. When Slip Detection
The TOD continuously monitors the front and rear
propeller shaft speeds to detect wheel slip.
3. Wheel Slip Control
When wheel slip is detected the TOD controls the
EMC duty cycle as necessary until the wheel slip
is reduced below the allowable limit. The EMC
Duty Cycle will then be reduced to the Touch-Off
value.
4. Brake/ABS Strategy
When the ABS System is active, the EMC Duty
Cycle is set to a fixed duty cycle (30 %) to aid in
braking without counteracting the ABS System.
5. 4L Strategy
When the system is operating in 4L, the TOD
continues TODTM (operation provided that the
propeller shaft speed is below 175 rpm (5220
pulses/minute)). When the speed increases above
175 rpm, the EMC Duty Cycle is set to the
maximum value (88 %) which applies the maximum
available torque to the front axle.
SSANGYONG Y200
TRANSFER CASE - TOD 5D2-23