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HOMESERVICE MANUALSSUBARU2014OUTBACK 2.5I, STANDARD TRANSREPAIR AND DIAGNOSISBRAKESTRACTION CONTROLVEHICLE DYNAMICS CONTROL SYSTEM (DIAGNOSTICS)DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)DTC C0073 ABNORMAL LATERAL G SENSOR OUTPUTDIAGNOSTIC PROCEDURE
2014 Subaru Outback 2.5i, Standard Trans

Diagnostic Procedure

2014 Subaru Outback 2.5i, Standard TransSECTION Diagnostic Procedure
DIAGNOSTIC PROCEDURE

Step Check Yes No
1 CHECK INSTALLATION OF VDCCM&H/U.  Is VDCCM&H/U installed properly without being tilted? Is the bracket deformation-free? Are the VDCCM&H/U installation bolts installed without missing or getting loose? Go to step 2  . Repair the defective part. Go to step 2  .
2 CHECK OUTPUT OF STEERING ANGLE SENSOR USING SUBARU SELECT MONITOR. 
  1. Park the vehicle straight on a level surface.
  2. Connect Subaru Select Monitor, and select "Current Data Display & Save".
  3. Read the «Steer Angle Sensor Op» displayed on display.
 Is the indicated reading of the steering angle sensor on the monitor display -10° - 10°? Go to step 3  . Check the installation of steering angle sensor.
3 CHECK OUTPUT OF LATERAL G SENSOR WITH SUBARU SELECT MONITOR. 
  1. Park the vehicle straight on a level surface.
  2. Connect Subaru Select Monitor, and select "Current Data Display & Save".
  3. Read the «Lateral G sensor Output» displayed on display.
 Is the indicated reading of the lateral G sensor on the monitor display -2 - 2 m/s2 ? Go to step 4  . Recheck from step 1, and if the problem is not solved, go to next. Go to step 7  .
4 SET 0 POINT FOR LATERAL G SENSOR USING SUBARU SELECT MONITOR. 
  1. Select "Function Check Sequence" on Subaru Select Monitor.
  2. Perform Set up mode for Neutral of Steering Angle Sensor & Lateral G Sensor 0 point. < Refer to 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). >
 Is the 0 point setting successful? Go to step 5  . Recheck from step 1, and when the 0 point setting is not possible, replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . >
5 PERFORM DRIVING TEST. 
Drive approximately 10 minutes, and check if the warning lights illuminate or improperly operate during driving.
In a safe place, drive the vehicle while alternating acceleration and deceleration as much as possible.		 Did the ABS warning light or VDC warning light remain off?
Does ABS or VDC operate without malfunction?		 Go to step 6  . Recheck from step 1, and when the warning lights illuminate or improperly operate, replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . >
6 CHECK OUTPUT OF LATERAL G SENSOR WITH SUBARU SELECT MONITOR. 
  1. Park the vehicle on a level surface.
  2. Connect Subaru Select Monitor, and select "Current Data Display & Save".
  3. Read the «Lateral G sensor Output» displayed on display.
 Is the indicated reading of the lateral G sensor on the monitor display -1.5 - 1.5 m/s2 ? End.
It results from a temporary noise interference. Though VDC warning light may remain lit, this is normal. Warning light goes off when the vehicle is driven at 12 km/h (7 MPH) or more.		 Recheck from step 1, and if the problem is not solved, replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . >
7 CHECK OUTPUT OF LATERAL G SENSOR WITH SUBARU SELECT MONITOR. 
  1. Remove the VDCCM&H/U installation bolt and bracket.
  2. Keep VDCCM&H/U in a horizontal position.
  3. Connect Subaru Select Monitor, and select "Current Data Display & Save".
  4. Read the «Lateral G sensor Output» displayed on display.
 When the VDCCM&H/U is in a horizontal position, is the indicated reading of the lateral G sensor on the monitor display -1.5 - 1.5 m/s2 ? Check the bracket and brake pipe, and install VDCCM&H/U in a horizontal position to the vehicle. Replace the VDCCM&H/U. < Refer to VDC CONTROL MODULE AND HYDRAULIC CONTROL UNIT (VDCCM&H/U) . >
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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.