Opel Frontera UBS. Service manual — part 1016
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–4
System Components
Parts Location
A07RY00002
Legend
(1) T/F Connector
(2) 4H and 4L Switch
(3) High-Low Planetary Gear Set
(4) Mechanical Lock
(5) Multi Plate Disk Clutch Pack
(6) Electromagnetic Coil
(7) Rear Speed Sensor
(8) Front Speed Sensor
4B2–5
DRIVE LINE CONTROL SYSTEM (TOD)
Front and Rear Speed Sensors
The sensors are built in the transfer case, detect the
rotation of rotors directly coupled to the propeller shafts.
Thirty rectangular pulses are output per one rotation of
the propeller shaft.
261RW045
Electromagnetic Coil
Receives the duty signals from the TOD control unit and
controls the pressing force of the clutch pressure cam.
261RW044
Multi Plate Disk Clutch Pack
Transmits the torque determined by the clutch pressing
force to the front propeller shaft via the front drive chain.
262RW029
Mechanical Lock Sleeve
Couples the front and rear propeller shaft mechanically
when the transfer shaft is in the 4L position.
262RW028
DRIVE LINE CONTROL SYSTEM (TOD)
4B2–6
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.
262RW030
4H and 4L Switch
Detects the shift position of the transfer from the
movement of the transfer lever and outputs signals to the
TOD control unit.
261RW002
Transfer Connector
Transmits the input and output signals of the speed
sensors, electromagnetic coil, and 4H and 4L switche to
the vehicle harness. A waterproof 12-pin type is used.
261RW046
TOD Indicator Lamps (on the instrument
panel)
Inform the following items.
D
Bulb check
D
Drive mode
D
ABS IN status
D
BRAKE ON status
821RW049
4B2–7
DRIVE LINE CONTROL SYSTEM (TOD)
Check Lamp
Inform the following items.
D
Bulb check
D
Fail (fail alarm)
D
Trouble code
D
Diesel/gasoline MAP
821RW078
TOD ECU
This control unit is mounted to the front right hand seat via
a special bracket.
F07RW029
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