Electrical Control - Subaru Legacy 2015 Technicians Reference Booklet

2015 Legacy and Outback

Electrical Control

The PRG Control Unit is located next to the PRG motor assembly and is secured to the vehicle
body with 2 clips that are made onto the plastic body of the control unit. Use care when removing
the control unit so that the clips are not damaged. The PRG control unit communicates with the
BIU through a LIN communications wire for all PRG operations. Data to the Select Monitor will be
slow due to the reduced communications speed of the LIN circuit.
Note: The operation of the Auto Closer assembly is the same as the Forester type
PRG. Refer to the 602 TRB for details on Auto Closer operation.
PRG Control Unit
The armature of the PRG motor is equipped with a revolution sensor reluctor which is constructed
with alternating magnetic poles. Two Hall sensors, Hall 1 and Hall 2, create input signals to the
PRG control unit as the alternating magnetic poles revolve by the sensors.
Revolution Sensor Reluctor
The PRG control unit combines the two signals to create the data viewed on the Subaru Select
Monitor as Rear Gate Speed and Pulse-count 2.
New Technology Training
FB-21 FB-58
F/B FUSE NO. 14 F/B FUSE NO. 5
(B) (IG)
A :
R422
B : R423
3-14
POWER REAR GATE CM
3-16
60
(Module 926)
DATA LINK CONNECTOR
FB-42 MB-44
M/B FUSE NO. 19 F/B FUSE NO. 17
(IG) (B)
K : i171
L : i81
BODY INTEGRATED UNIT
LIN Circuit
Hall Sensors
B40
REF. TO ENGINE
ELECTRICAL SYSTEM
3-15
3-17
June 2014