2009 SUBARU TRIBECA Service Workshop Manual

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Page 1033 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-41
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
5CHECK THE VDCCM&H/U POWER SUPPLY
CIRCUIT.
1) Turn the ignition switch to OFF.
2) Dis

Page 1034 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-42
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
E: DTC C0022 FRONT ABS WHEEL SPEED SENSOR RH SIGNAL NOISE
NOTE:
For the diagnostic pro

Page 1035 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-43
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
L: DTC C0028 REAR ABS WHEEL SPEED SENSOR LH SIGNAL MALFUNC-
TION
DTC DETECTING CONDITI

Page 1036 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-44
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK THE VDCCM&H/U POWER SUPPLY
CIRCUIT.
1) Turn the ignition swi

VDC(diag)-44
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK THE VDCCM&H/U POWER SUPPLY
CIRCUIT.
1) Turn the ignition switch to OFF.
2) Disconnect the VDCCM&H/U connector.
3) Turn the ignition switch to ON.
4) Measure the voltage between VDCCM&H/
U connector terminals.
Connector & terminal
(B310) No. 1 (+) — (B310) No. 43 (–):
Is the voltage 10 — 15 V? Go to step 2.Check the genera-
tor, batter y and
VDCCM&H/U
power supply cir-
cuit.
2CHECK OUTPUT OF ABS WHEEL SPEED
SENSOR USING SUBARU SELECT MONI-
TOR.
1) Select {Current Data Display & Save} in
Subaru Select Monitor.
2) Read the ABS wheel speed sensor output
corresponding to the faulty wheel in Subaru
Select Monitor data display mode.
Does the speed indicated on
the display change in response
to the speedometer reading
during acceleration/decelera-
tion when the steering wheel is
in the straight-ahead position?
Go to step 3.Go to step 8.
3CHECK POOR CONTACT IN CONNECTOR.
Tu r n t h e i g n i t i o n s w i t c h t o O F F.
Is there poor contact in con-
nectors between VDCCM&H/U
and ABS wheel speed sensor?
Repair the con-
nector.
Go to step 4.
4CHECK CAUSE OF SIGNAL NOISE.
Make sure the radio wave devices and electric
components are installed correctly.
Are the radio wave devices and
electric components installed
correctly?
Go to step 5.Install the radio
wave devices and
electric compo-
nents properly.
5CHECK CAUSE OF SIGNAL NOISE.
Check if the noise sources (such as an
antenna) are installed near the sensor har-
ness.
Are noise sources installed? Install the noise
sources apart from
sensor harness.
Go to step 6.
6CHECK THE VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode. VDC(diag)-23, PROCEDURE, Inspection
Mode.>
4) Read the DTC.
Is the same DTC displayed? Replace the
VDCCM&H/U.
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 7.
7CHECK OTHER DTC DETECTION.Is any other DTC displayed? Perform the diag-
nosis according to
DTC.
It results from a
temporary noise
interference.
8CHECK INSTALLATION OF ABS WHEEL
SPEED SENSOR.
Is the ABS wheel speed sen-
sor installation bolt tightened
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)?
Go to step 9.Tighten the ABS
wheel speed sen-
sor installation
bolts.
9CHECK ABS WHEEL SPEED SENSOR SIG-
NAL.
1) Install the ABS wheel speed sensor.
2) Prepare an oscilloscope.
3) Check the ABS wheel speed sensor. to VDC-22, ABS WHEEL SPEED SENSOR,
INSPECTION, Front ABS Wheel Speed Sen-
sor.>
Does the oscilloscope indicate
the waveform pattern like
shown in the figure when the
tire is slowly turned? Does the
oscilloscope indication repeat
the waveform pattern like
shown in the figure when the
tire is slowly turned in equal
speed for more one rotation?
Go to step 11.Go to step 10.

Page 1037 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-45
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
M: DTC C0031 FRONT INLET SOLENOID VALVE RH MALFUNCTION IN VDC-
CM&H/U
NOTE:
For the

VDC(diag)-45
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
M: DTC C0031 FRONT INLET SOLENOID VALVE RH MALFUNCTION IN VDC-
CM&H/U
NOTE:
For the diagnostic procedure, refer to DTC C0063 “LINEAR VALVE MALFUNCTION IN VDCCM&H/U”.
dure with Diagnostic Trouble Code (DTC).>
N: DTC C0032 FRONT OUTLET SOLENOID VALVE RH MALFUNCTION IN VDC-
CM&H/U
NOTE:
For the diagnostic procedure, refer to DTC C0063 “LINEAR VALVE MALFUNCTION IN VDCCM&H/U”.
dure with Diagnostic Trouble Code (DTC).>
10 CHECK ABS WHEEL SPEED SENSOR OR
MAGNETIC ENCODER.
Are there foreign matter,
breakage or damage at the tip
of ABS wheel speed sensor or
magnetic encoder?
Remove dirt
throughly. Also
replace the ABS
wheel speed sen-
sor or magnetic
encoder as a unit
with hub unit bear-
ing if it is broken or
damaged.
Go to step 11.
11 CHECK CAUSE OF SIGNAL NOISE.
Make sure the radio wave devices and electric
components are installed correctly.
Are the radio wave devices and
electric components installed
correctly?
Go to step 12.Install the radio
wave devices and
electric compo-
nents properly.
12 CHECK CAUSE OF SIGNAL NOISE.
Check if the noise sources (such as an
antenna) are installed near the sensor har-
ness.
Is the noise sources installed? Go to step 13.Install the noise
sources apart from
sensor harness.
13 CHECK THE VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode. VDC(diag)-23, PROCEDURE, Inspection
Mode.>
4) Read the DTC.
Is the same DTC displayed? Replace the
VDCCM&H/U.
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 14.
14 CHECK OTHER DTC DETECTION.Is any other DTC displayed? Perform the diag-
nosis according to
DTC.
It results from a
temporary noise
interference.
NOTE:
Though the ABS
warning light re-
mains on at this
time, it is normal.
Drive the vehicle at
more than 12 km/h
(7 MPH) in order to
turn ABS warning
light off. Be sure to
drive the vehicle
and check the
warning light goes
off.
Step Check Yes No

Page 1038 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-46
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
O: DTC C0033 FRONT INLET SOLENOID VALVE LH MALFUNCTION IN VDC-
CM&H/U
NOTE:
For the

Page 1039 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-47
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
W: DTC C0063 LINEAR VALVE MALFUNCTION IN VDCCM&H/U
DTC DETECTING CONDITION:
•Defecti

Page 1040 of 2453

SUBARU TRIBECA 2009 1.G Service Workshop Manual VDC(diag)-48
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK THE VDCCM&H/U INPUT VOLTAGE.
1) Turn the ignition switch to O

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