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provided, right.

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SERVICE INFORMATION
APPLICABILITY: 2005-14MY Legacy and Outback, All Models
2009-14MY Forester, All Models
2008-13MY Impreza, All Models
2004MY and Later WRX and STI, All Models
2006-2014MY Tribeca
SUBJECT:

NUMBER: 06-47-14
DATE: 10/23/14

Revision to Troubleshooting Information for VDC DTC C0071

INTRODUCTION
This Service Information bulletin announces a revision to the troubleshooting chart used when
diagnosing a VDC system, DTC C0071 on any of the models specified above. The resistance value
for the steering angle sensor wiring harness has been revised.
SERVICE PROCEDURE / INFORMATION
IMPORTANT NOTES:
•

Always use the applicable Service Manual troubleshooting chart for the vehicle being
repaired as the connector and terminal numbers shown in the example will likely differ.

•

Only the latest model year’s edition of the Service Manual for each model listed above
will be updated with this information on STIS in the future.

•

An EXAMPLE of the troubleshooting chart is supplied on page 2. In Step 4 of the example,
the previous instruction was to check for 1 MΩ or more (open circuit). The revised test states
to check for resistance of 10 Ω or more.

Continued...
CAUTION: VEHICLE SERVICING PERFORMED BY UNTRAINED PERSONS COULD
RESULT IN SERIOUS INJURY TO THOSE PERSONS OR TO OTHERS.
Subaru Service Bulletins are intended for use by professional technicians ONLY. They
are written to inform those technicians of conditions that may occur in some vehicles,
or to provide information that could assist in the proper servicing of the vehicle. Properly
trained technicians have the equipment, tools, safety instructions, and know-how to
do the job correctly and safely. If a condition is described, DO NOT assume that this
Service Bulletin applies to your vehicle, or that your vehicle will have that condition.

Bulletin Number: 06-47-14; Date: 10/23/14

SUBARU OF AMERICA, INC. IS
ISO 14001 COMPLIANT
ISO 14001 is the international standard for
excellence in Environmental Management
Systems. Please recycle or dispose of
automotive products in a manner that is friendly
to our environment and in accordance with all
local, state and federal laws and regulations.

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２０１３年９月１８日

水曜日

午前９時４３分

Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)

1

2

3

4

5

Step
CHECK POWER SUPPLY FOR STEERING
ANGLE SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from steering
angle sensor.
3) Turn the ignition switch to ON.
4) Measure the voltage between steering
angle sensor and chassis ground.
Connector & terminal
(B231) No. 4 (+) — Chassis ground (–):
CHECK GROUND CIRCUIT OF STEERING
ANGLE SENSOR.
Measure the resistance between steering angle
sensor and chassis ground.
Connector & terminal
(B231) No. 1 — Chassis ground:
CHECK STEERING ANGLE SENSOR HARNESS.
1) Disconnect the connector from the
VDCCM&H/U.
2) Measure the resistance between
VDCCM&H/U and steering angel sensor.
Connector & terminal
(B231) No. 2 — (B310) No. 8:
(B231) No. 3 — (B310) No. 10:
CHECK GROUND SHORT CIRCUIT OF
STEERING ANGLE SENSOR HARNESS.
Measure the resistance between steering angle
sensor and chassis ground.
Connector & terminal
(B231) No. 2 — Chassis ground:
(B231) No. 3 — Chassis ground:
CHECK STEERING WHEEL.
1) Drive the vehicle on a flat road.
2) Park the vehicle straight.
3) Check the steering wheel for deviation from
center.

Check
Is the voltage 10 — 15 V?

No
Repair the steering
angle sensor
power supply circuit.

E
L
Go to step 3.

Repair ground circuit in the steering
angle sensor.

Is the resistance less than 1 ? Go to step 4.

Repair the harness
between the steering angle sensor
and VDCCM&H/U.

Is the resistance less than 10
?

P

M
A

S

Yes
Go to step 2.

Is the resistance 10  or more? Go to step 5.

Repair the harness
between the steering angle sensor
and VDCCM&H/U.

Is the deviation from the center Go to step 6.
of steering wheel less than 5°?

Perform the centering adjustment
of steering wheel,
and perform Set up
mode for Neutral of
Steering Angle
Sensor & Lateral G
Sensor 0 point.

REMINDER: SOA strongly discourages the printing and/or local storage of service information
as previously released information and electronic publications may be updated at any time. Always
refer to STIS for the latest service information before performing any repairs.

VDC(diag)-77

Bulletin Number: 06-47-14; Date: 10/23/14

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