Part Time
- Mode switch (2High↔4High↔4Low)
- Drivers toggle the mode switch to select the 4WD mode (2High, 4High, 4Low)
- It can switch 2High↔4High under the vehicle speed of 80kph (50mph) but mode switching of 2High↔4Low, 4High↔4Low is possible at standing and neutral position of shift lever.
- Motor Position Sensor (MPS)
MPS is magnetic field sensor and places inside the shift motor.
The MPS and round magnetic in TCCU are as an assembly and the angle is calibrated so should not be disassembled in any case.
Because the angle never be calibrated once the shift motor and TCCU are disassembled.
- Shift motor
The shift motor switches the 4WD mode (2High↔4High↔4Low) by receiving TCCU signal.
- Electronic Magnet Clutch (EMC) coil
The EMC coil synchronizes the lock-up hub with the EMC housing for shifting 4High to 4Low while driving.
EMC is activated before the shift motor moves the lock-up fork and stops after completing shifting 4High.
EMC is activated about 6 seconds. TCCU sends 12V of duty 100%.
- Indicator and Warning lamp
The indicator lamp for 4WD mode (4High,4Low) is in the cluster. But there is no indicator lamp for 2High.
When the 4WD system fails, the 4WD warning lamp (yellow) is on center in the cluster.
The cluster controls 4WD related lamps by receiving TCCU signal via CAN.