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3D-12
TCCU System
Position Encoder
The position encoder is the code that TCCU can determine the shift motor position.
Position Code
1
2
0
0
1
0
0
0
0
1
0
0
0
0
0
0
1
0
1
0
1
1
0
0
1
1
Operation
TCCU initialization and operation
• TCCU sends relevant data to meter cluster via CAN to diagnose and check the indicators when the ignition switch is
turned to ON. At this time, the 4WD indicators (4WD LOW and 4WD HIGH) comes on for 0.6 seconds.
• TCCU starts diagnosis by operating clutch and hub solenoid for 1.5 seconds.
• If the selector switch position and the shift motor position code does not match when the IG power is turned ON, the
shift is controlled to move in the direction of the selector switch position.
• The shift operation is controlled to move only toward selector switch position if the selector switch position is not
met with shift motor position code when the ignition switch is turned to ON.
Function of indicating lamp during shifting
• As the operation of shift motor starts, the indicator flickers
in interval of 0.3 seconds and stops after the shifting
operation is completed or cancelled.
- Operation diagram of "4H" indicator when changing
the switch to 4H from 4L.
- Operation diagram of "4L" indicator when changing
the switch to 4L from 2H/4H.
CHANGED BY
EFFECTIVE DATE
AFFECTED VIN
3
4
0
0
1
0
1
0
1
0
1
0
1
1
0
1
0
1
0
0
0
0
0
0
1
1
Motor Position
Left stop
2 H
Zone 1
Zone 2
Zone 3
4 H
Zone 4
Zone 5
Zone 6
4 L
Right stop
Encoder OFF
0.3 seconds
0.3 seconds
Remark
Input voltage
1 : above 4.5 V
(HIGH)
0 : below 0.5 V
(LOW)
Shift completed
Y220_03D010
PART TIME
REXTON SM - 2004.4
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