NHTSA ID Number: 10235894
Manufacturer Communication Number: 064714
Summary
Revision to Troubleshooting Information for VDC DTC C0071
NUMBER: 06-47-14
DATE: 10/23/14
| 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 Models2006-2014MY Tribeca |
| SUBJECT: | 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.
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
| Step | Check | Yes | No | |
| 1 | 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 (–): | Is the voltage 10 — 15 V? | Go to step 2. | Repair the steering angle sensor power supply circuit. |
| 2 | CHECK GROUND CIRCUIT OF STEERING ANGLE SENSOR.
Measure the resistance between steering angle sensor and chassis ground. Connector & terminal (B231) No. 1 — Chassis ground: | Is the resistance less than 10
? | Repair ground circuit in the steering angle sensor. | |
| 3 | 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: | Go to step 4. | Repair the harness between the steering angle sensor and VDCCM&H/U. | |
| 4 | 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: | Is the resistance 10 Ω or more? | Go to step 5. | Repair the harness between the steering angle sensor and VDCCM&H/U. |
| 5 | Is the deviation from the center of steering wheel less than 5°? | Go to step 6. | Perform the centering adjustment of steering wheel, and perform Set up mode for Neutral of Steering Angle Sensor & Lateral G Sensor 0 point.
<Ref. to VDC-20, SET UP MODE FOR NEUTRAL OF STEERING ANGLE SENSOR & LATERAL G SENSOR 0 POINT, ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM&H/U).> |
61 Affected Products
Vehicles
| MAKE | MODEL | YEAR |
| SUBARU | FORESTER | 2009-2014 |
| SUBARU | IMPREZA | 2008-2013 |
| SUBARU | LEGACY | 2005-2014 |
| SUBARU | OUTBACK | 2005-2014 |
| SUBARU | TRIBECA | 2006-2014 |
| SUBARU | WRX | 2004-2014 |
| SUBARU | WRX STI | 2004-2005, 2008-2014 |
1 Associated Document
Manufacturer Communications
NUMBER: 06-47-14
DATE: 10/23/14
MC-10235894-9999.pdf 305.578KB
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SEOCONTENT-START
Bulletin Number: 06-47-14; Date: 10/23/14 Page 1 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. NUMBER: 06-47-14 DATE: 10/23/14 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: Revision to Troubleshooting Information for VDC DTC C0071 SERVICE INFORMATION Continued… ATTENTION: GENERAL MANAGER q PARTS MANAGER q CLAIMS PERSONNEL q SERVICE MANAGER q IMPORTANT – All Service Personnel Should Read and Initial in the boxes provided, right. ©2014 Subaru of America, Inc. All rights reserved. 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. 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. Bulletin Number: 06-47-14; Date: 10/23/14 Page 2 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. SAMPLE VDC(diag)-77 Diagnostic Procedure with Diagnostic Trouble Code (DTC) VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS) Step Check Yes No 1 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 (–): Is the voltage 10 — 15 V? Go to step 2. Repair the steering angle sensor power supply circuit. 2 CHECK GROUND CIRCUIT OF STEERING ANGLE SENSOR. Measure the resistance between steering angle sensor and chassis ground. Connector & terminal (B231) No. 1 — Chassis ground: Is the resistance less than 10 ? Go to step 3. Repair ground circuit in the steering angle sensor. 3 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: Is the resistance less than 1 ? Go to step 4. Repair the harness between the steering angle sensor and VDCCM&H/U. 4 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: Is the resistance 10 or more? Go to step 5. Repair the harness between the steering angle sensor and VDCCM&H/U. 5 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. Is the deviation from the center of steering wheel less than 5°? Go to step 6. Perform the centering adjustment of steering wheel, and perform Set up mode for Neutral of Steering Angle Sensor & Lateral G Sensor 0 point. b14usen005.fm 77 ページ ２０１３年９月１８日 水曜日 午前９時４３分
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