151
June 2014
2015 Legacy and Outback New Technology Training (Module 926)
Diagnostics
Since the Control Unit has been incorporated into the Gear Box assembly, diagnostics have been
simplified. Resolver and U, V, W Motor Winding related diagnostics are no longer necessary as
any faults relating to these components will require a Gear Box assembly replacement.
DTC Item Content of diagnosis
None
Without DTCNormal
“Assist limitation” is displayed
in the current data «EPS
operating condition».
Assist limitation is performed
due to overheat protection
control.
“Overheating protection inter-
vention history” in current
data display shows 1 or
more.
There are previous records of
intervention to overheat pro-
tection control.
C2511
Torque Sensor Failure 1
(Main)
•Poor connector contact
•Forgot to connect connec-
tor
•Faulty torque sensor sec-
tion circuit
•Faulty torque sensor coil
C2512
Torque Sensor Failure 2
(Sub)
C2513
Torque Sensor Failure 3
(Much To lerance)
C2514
Torque Sensor Power Sup-
ply Failure
C2521Motor Failure 1 (Motor)
•Poor connector contact
•Forgot to connect connec-
tor
•Harness open/short circuit
•Motor open circuit
•Power transistor shorted/
open
•Terminal power supply or
ground short
C2522
Motor Malfunction 2
(Resolver)
C2531ECU Failure 1 (CPU Failure)
Faulty main unit of power
steering control module
C2532
ECU Failure 2 (Peripheral
Circuit Failure)
Faulty main unit of power
steering control module
C2533
ECM Failure 3 (Board Te m-
perature Sensor Failure)
Faulty main unit of power
steering control module
Inspect harness for
possible damage.
Replace if necessary. If
harness is OK, To rque
Sensor or control Unit
has failed. Replace the
Gear Box assembly.
Replacement of Gear Box
Assembly is necessary.
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