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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 LONGITUDINAL G SENSOR USING 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 «Fr Rr G sensor Output» displayed on display.
 Is the indicated reading of the longitudinal G sensor on the monitor display -2 - 2 m/s2 ? Go to step 3  . Recheck from step 1, and if the problem is not solved, go to next. Go to step 6  .
3 SET 0 POINT FOR LONGITUDINAL G SENSOR USING SUBARU SELECT MONITOR. 
  1. Select "Function Check Sequence" on Subaru Select Monitor.
  2. Perform the "Longitudinal G sensor & lateral G sensor 0 point setting mode". < Refer to LONGITUDINAL G SENSOR & LATERAL G SENSOR 0 POINT SETTING MODE , ADJUSTMENT, VDC Control Module and Hydraulic Control Unit (VDCCM&H/U). >
 Is the 0 point setting successful? Go to step 4  . 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) . >
4 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 5  . 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) . >
5 CHECK OUTPUT OF LONGITUDINAL G SENSOR USING 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 «Fr Rr G sensor Output» displayed on display.
 Is the indicated reading of the longitudinal G sensor on the monitor display -1.5 - 1.5 m/s2 ? End. It results from a temporary noise interference. 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) . >
6 CHECK OUTPUT OF LONGITUDINAL G SENSOR USING 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 «Fr Rr G sensor Output» displayed on display.
 When the VDCCM&H/U is in a horizontal position, is the indicated reading of the longitudinal 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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