Subaru XV Crosstrek Hybrid 2014 Technicians Reference Booklet page 43

2014 XV Crosstrek Hybrid
During Engine Drive Mode, the power from the Torque Converter comes into the transmission
through the input shaft of the Forward Clutch Drum. The planetary gear set carrier which is splined
to the Primary Pulley is the output of the planetary gear set. When the Forward Clutch is engaged,
the carrier is locked to the Forward Clutch Drum and a mechanical link is established from the
engine to wheels via the transmission.
In the transmission, the Primary Pulley turns a chain that drives the Secondary Pulley. The
Reduction Drive Gear is splined to the top of the Secondary Pulley, so any time the Secondary
Pulley rotates, the Reduction Drive Gear rotates. The Reduction Driven Gear is now equipped
with a clutch hub to interact with the Output Clutch. The Output Clutch must be engaged before
any power from the engine can be delivered to the wheels. This action occurs before the power
gets to the transfer section of the transmission. If the Output Clutch is engaged, the power flows
from the Output Clutch driven shaft to the Transfer Drive Gear to the front Differential and Transfer
Driven Gear. This provides power to the front and rear wheels. The Electric Motor Rotor is splined
to the Primary Pulley, so anytime the Primary Pulley is turning, the Motor Rotor rotates. In the
case of the Engine Drive Mode, the Motor is ineffective, providing neither High Voltage Battery
charging or driving forces.
B1
B20
A:
B54
B2
TCM
B:
B55
A10
OUTPUT CLUTCH
LINEAR SOLENOID
The Output Clutch is turned off by supplying high current (1 amp) to the Output Clutch Linear
Solenoid. The Linear solenoid drains away hydraulic pressure that applies the clutch. Failsafe for
the Output Clutch Linear Solenoid is full application.
Electrical control is provided by the TCM or the Hybrid Powertrain Control Module. Normal control
is through the TCM for all Driving Modes, while the Hybrid Powertrain Control Module provides
power and control during a TCM failure.
16
15
3
4 5
T32 B603
R608
Output Clutch Relay Wiring Schematic
43
17
14
SELF SHUT
B220
RELAY
1
4
2
OUTPUT
CLUTCH
RELAY
(Module 702)
TO POWER SUPPLY
CIRCUIT
MB-26
M/B FUSE NO. 12
(B)
HYBRID
POWERTRAIN
CM
A1
A: B605
70
November 2013