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Parts Location
Front and Rear Speed Sensors
The sensors are built in the transfer case, and detect the rotation of rotors directly coupled to the propeller shafts. Thirty rectangular pulses are output per one rotation of the propeller shaft.
Electromagnetic Coil
Receives the duty signals from the TOD control unit and controls the pressing force of the clutch pressure cam.
Multi Plate Disk Clutch Pack
Transmits the torque determined by the clutch pressing force to the front propeller shaft via the front drive chain.
Mechanical Lock Sleeve
Couples the front and rear propeller shaft mechanically when the transfer shaft is in the 4L position.
High-Low Planetary Gear Set
Establishes an auxiliary transmission mechanism. When the transfer shift lever is set to the 2H or TOD position, the reduction gear ratio is 1.000 and the corresponding driving force is generated. When the transfer shift lever is set to the 4L position, the reduction gear ratio is 2.480 and the corresponding driving force is generated.
4H and 4L Switches
Detects the shift position of the transfer from the movement of the transfer lever and outputs signals to the TOD control unit.
Transfer Connector
Transmits the input and output signals of the speed sensors, electromagnetic coil, and 4H and 4L switches to the vehicle harness. A waterproof 12-pin type is used.
TOD Indicator Lamps (on the instrument panel)
Inform the following items.
^ Bulb check
^ Drive mode
^ ABS IN status
^ BRAKE ON status
Check Lamp
^ Inform the following items.
^ Bulb check
^ Fail (fail alarm)
^ Trouble code
TOD ECU
This control unit is mounted to the front right hand seat via a special bracket.