Subaru Outback (BR): Basic Diagnostic Procedure of Vehicle Dynamics Control
A: PROCEDURE
CAUTION: Remove foreign matter (dust, water, oil etc.) from the VDCCM&H/U connector during removal and installation.
NOTE:
- To check the harness for open or short circuits, shake problem spot or connector.
- Refer to "Check List for Interview". <Ref. to VDC(diag)-4, Check List for Interview.>
Check List for Interview
A: CHECK
Check the following item about the vehicle's state.
1. STATE OF ABS WARNING LIGHT
2. STATE OF VDC WARNING LIGHT & VDC INDICATOR LIGHT
3. STATE OF VDC OFF INDICATOR LIGHT
4. CONDITIONS UNDER WHICH TROUBLE OCCURS
General Description
A: CAUTION
1. SUPPLEMENTAL RESTRAINT SYSTEM "AIRBAG"
Airbag system wiring harness is routed near the ABS wheel speed sensor and VDCCM&H/U.
CAUTION:
- Do not use electrical test devices on airbag system wiring harnesses or connector circuits.
- Be careful not to damage the airbag system wiring harness when servicing the ABS wheel speed sensor and VDCCM&H/U.
B: INSPECTION
Before performing diagnosis, check the following items which might affect VDC problems.
1. BATTERY
Measure the battery voltage and check electrolyte.
Standard voltage: 12 V or more
Specific gravity: 1.260 or more
2. GROUND
Check the tightening torque of ground (GV) bolt for VDC.
Tightening torque: 13 N*m (1.3 kgf-m, 9.6 ft-lb)
3. BRAKE FLUID
1) Check the brake fluid level.
2) Check the brake fluid for leaks.
4. HYDRAULIC UNIT
Check the hydraulic unit.
- With brake tester <Ref. to VDC-12, CHECKING THE HYDRAULIC UNIT ABS OPERATION WITH THE BRAKE TESTER, INSPECTION, VDC Control Module and Hydraulic Control Unit (VDCCM& H/U).>
- Without brake tester <Ref. to VDC-12, CHECKING THE HYDRAULIC UNIT ABS OPERATION BY PRESSURE GAUGE, INSPECTION, VDC Control Module and Hydraulic Control Unit (VDCCM& H/U).>
5. BRAKE DRAG
Check for brake drag.
6. BRAKE PAD AND ROTOR
Check the brake pad and rotor.
- Front <Ref. to BR-17, INSPECTION, Front Brake Pad.> <Ref. to BR-19, INSPECTION, Front Disc Rotor.>
- Rear <Ref. to BR-31, INSPECTION, Rear Brake Pad.> <Ref. to BR-34, INSPECTION, Rear Disc Rotor.>
7. TIRE
Check the tire specifications, tire wear and air pressure.
<Ref. to WT-2, SPECIFICATION, General Description.>
C: PREPARATION TOOL
1. SPECIAL TOOL
2. GENERAL TOOL
Electrical Component Location
A: LOCATION
- VDC control module & hydraulic control unit (VDCCM&H/U)
- Connector
- VDC OFF switch
- ABS warning light
- Brake warning light (EBD warning light)
- VDC warning light & VDC indicator light
- VDC OFF indicator light
- Steering angle sensor
- Transmission control module (TCM)
- Data link connector
- Magnetic encoder
- ABS wheel speed sensor
- Engine control module (ECM)
- Stop light & brake switch
Control Module I/O Signal
A: ELECTRICAL SPECIFICATION
NOTE:
- Terminal numbers in VDCCM&H/U connector are shown in the figure.
- When the connector is removed from VDCCM&H/U, the brake warning light (EBD warning light), ABS warning light, and VDC warning light & VDC indicator light illuminate.
B: WIRING DIAGRAM
- Battery
- Ignition switch
- VDC control module & hydraulic control unit (VDCCM&H/U)
- VDC control module
- Valve relay
- Pressure sensor
- Yaw rate & G sensor
- Motor relay
- Motor
- Front inlet solenoid valve LH
- Front outlet solenoid valve LH
- Front inlet solenoid valve RH
- Front outlet solenoid valve RH
- Rear inlet solenoid valve LH
- Rear outlet solenoid valve LH
- Rear inlet solenoid valve RH
- Rear outlet solenoid valve RH
- Primary cut solenoid valve
- Primary suction solenoid valve
- Secondary cut solenoid valve
- Secondary suction solenoid valve
- Data link connector
- VDC OFF switch
- Combination meter
- VDC OFF indicator light
- VDC warning light & VDC indicator light
- ABS warning light
- Brake warning light (EBD warning light)
- Brake fluid level switch
- Stop light switch
- Stop light
- Body integrated unit
- Engine control module (ECM)
- Transmission control module (TCM)
- Parking brake control module
- Steering angle sensor
- Clutch stroke sensor (MT model only)
- Front ABS wheel speed sensor LH
- Front ABS wheel speed sensor RH
- Rear ABS wheel speed sensor LH
- Rear ABS wheel speed sensor RH
READ NEXT:
Subaru Select Monitor
A: OPERATION
1. HOW TO USE SUBARU SELECT MONITOR
NOTE:
For detailed operation procedures, refer to "PC
application help for Subaru Select Monitor".
If VDC and Subaru Select Monitor cannot communic
Warning Light Illumination Pattern
A: INSPECTION
Ignition switch
OFF
ON
Engine start
ABS warning light
Light OFF
Light ON
2 sec.
VDC OFF indicator light
VDC warning light & VDC indicator
light
Several seconds (dependi
Vehicle Dynamics Control - List of Diagnostic Trouble Code (DTC)
A: LIST
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC C0021 FRONT RIGHT ABS SENSOR CIRCUIT OPEN OR SHORT
NOTE: For the diagnostic procedure, refer to "DTC C0027 REAR L
SEE MORE:
Power steering
CAUTION
Do not hold the steering wheel at the fully locked position left or right for
more than 5 seconds. This may damage the power steering pump.
The power steering system operates only when the engine is running.
If you lose power steering assist because the engine stops or the system fails
Entering the vehicle while it is running via remote start
1. Unlock the vehicle doors using the remote keyless entry system. If the vehicle’s
doors are unlocked manually using the key, the vehicle’s alarm system will trigger
(if the alarm system is armed prior to activating the remote engine start system)
and the engine will turn off. Inserting t
