2009 SUBARU TRIBECA g sensor

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 procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
F: DTC C0024 FRONT ABS WHEEL SPEED SENSOR LH SIGNAL NOISE
NOTE:
For the diagnostic procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
G: DTC C0026 REAR ABS WHEEL SPEED SENSOR RH SIGNAL NOISE
NOTE:
For the diagnostic procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
H: DTC C0028 REAR ABS WHEEL SPEED SENSOR LH SIGNAL NOISE
NOTE:
For the diagnostic procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
I: DTC C0022 FRONT ABS WHEEL SPEED SENSOR RH SIGNAL MALFUNC-
TION
NOTE:
For the diagnostic procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
J: DTC C0024 FRONT ABS WHEEL SPEED SENSOR LH SIGNAL MALFUNC-
TION
NOTE:
For the diagnostic procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
K: DTC C0026 REAR ABS WHEEL SPEED SENSOR RH SIGNAL MALFUNC-
TION
NOTE:
For the diagnostic procedure, refer to DTC C0028 “REAR ABS WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION”. FUNCTION, Diagnostic Procedure with Diagnostic Trouble Code (DTC).>

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 CONDITION:
•Defective ABS wheel speed sensor signal (noise, irregular signal, etc.)
•Defective harness connector
TROUBLE SYMPTOM:
•ABS does not operate.
•VDC does not operate.
WIRING DIAGRAM:
26404127392543
B98
R249R232
R1
B97
R2
E
12121212B6B15
2842
B310VDCCM & H/U
TWISTED PAIR LINETWISTED PAIR LINE
TWISTED PAIR LINETWISTED PAIR LINE
REAR ABS WHEELSPEED SENSOR RH
FRONT ABS WHEELSPEED SENSOR RHFRONT ABS WHEELSPEED SENSOR LHREAR ABS WHEELSPEED SENSOR LH
B15
B6
R249
R232
VDC00370
920922
B310
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
B98
3412 8910 1112 13 14 15 16 17 18 19 20 21 22 23 2456 7
B97
1234 5678910 11 12 13 14 15 16 17 18 19 2012

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.

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

VDC(diag)-68
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AH:DTC C0056 G SENSOR OUTPUT SEIZURE
DTC DETECTING CONDITION:
Defective G sensor
TROUBLE SYMPTOM:
VDC does not operate.
AI: DTC C0056 G SENSOR SIGNAL MALFUNCTION
DTC DETECTING CONDITION:
Defective G sensor
TROUBLE SYMPTOM:
VDC does not operate.
Step Check Yes No
1CHECK G SENSOR OUTPUT.
1) Connect the Subaru Select Monitor to the
vehicle.
2) Select {Current Data Display & Save} in
Subaru Select Monitor.
3) Read the G sensor output when braking.
Do the values on the monitor
display change?
Go to step 2.Replace the yaw
rate & G sensor.
2CHECK THE VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed? Replace the
VDCCM&H/U.
Go to step 3.
3CHECK OTHER DTC DETECTION.Is any other DTC displayed? Perform the diag-
nosis according to
DTC.
Te m p o r a r y p o o r
contact occurs.
Step Check Yes No
1CHECK YAW RATE & G SENSOR INSTAL-
LATION.
Check the yaw rate & G sensor installation.
Are the yaw rate & G sensor
and bracket tightened to a
torque of 7.5 N·m (0.76 kgf-m,
5.5 ft-lb)?
Go to step 2.Tighten the yaw
rate & G sensor.
2CHECK G SENSOR OUTPUT.
1) Connect the Subaru Select Monitor to the
vehicle.
2) Select {Current Data Display & Save} in
Subaru Select Monitor.
3) Read the G sensor output displayed on
screen.
Is the value on the monitor dis-
play –1.5 — 1.5 m/s2?
Go to step 3.Replace the yaw
rate & G sensor.
3CHECK THE VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed? Replace the
VDCCM&H/U.
Go to step 4.
4CHECK OTHER DTC DETECTION.Is any other DTC displayed? Perform the diag-
nosis according to
DTC.
Te m p o r a r y p o o r
contact occurs.

VDC(diag)-69
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AJ:DTC C0056 YAW RATE & G SENSOR POWER SUPPLY VOLTAGE MAL-
FUNCTION
DTC DETECTING CONDITION:
Defective G sensor
TROUBLE SYMPTOM:
VDC does not operate.
WIRING DIAGRAM:
B310
12034
B359
E
3512
B310 VDCCM & H/U
TWISTED PAIR LINE
YAW RATE&G SENSOR
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
VDC00375
B359
12345
MAIN SBF
NO.33
E
BATTERY
IGNITIONSWITCH

VDC(diag)-70
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AK:DTC C0056 G SENSOR OUTPUT MALFUNCTION
DTC DETECTING CONDITION:
Defective G sensor
TROUBLE SYMPTOM:
VDC does not operate.
Step Check Yes No
1CHECK THE YAW RATE & G SENSOR POW-
ER SUPPLY.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from yaw rate &
G sensor.
3) Turn the ignition switch to ON.
4) Measure the voltage between yaw rate & G
sensor and chassis ground.
Connector & terminal
(B359) No. 5 (+) — Chassis ground (–):
Is the voltage 10 — 15 V? Go to step 2.Replace the yaw
rate & G sensor
power supply cir-
cuit.
2CHECK GROUND CIRCUIT OF YAW RATE &
G SENSOR.
1) Turn the ignition switch to OFF.
2) Measure the resistance between the yaw
rate & G sensor and chassis ground.
Connector & terminal
(B359) No. 1 (+) — Chassis ground (–):
Is the resistance less than 0.5
Ω?
Go to step 3.Replace the yaw
rate & G sensor
power supply cir-
cuit.
3CHECK YAW RATE & G SENSOR.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed? Replace the
VDCCM&H/U.
Go to step 4.
4CHECK OTHER DTC DETECTION.Is any other DTC displayed? Perform the diag-
nosis according to
DTC.
Te m p o r a r y p o o r
contact occurs.
Step Check Yes No
1CHECK YAW RATE & G SENSOR INSTAL-
LATION.
Check the yaw rate & G sensor installation.
Are the yaw rate & G sensor
and bracket tightened to a
torque of 7.5 N·m (0.76 kgf-m,
5.5 ft-lb)?
Go to step 2.Tighten the yaw
rate & G sensor.
2CHECK G SENSOR OUTPUT.
1) Connect the Subaru Select Monitor to the
vehicle.
2) Select {Current Data Display & Save} in
Subaru Select Monitor.
3) Drive at a constant speed of approximately
40 km/h (25 MPH) and read the G sensor out-
put at that time.
Is the indicated reading on the
monitor display –1.5 — 1.5 m/
s2?
Go to step 3.Replace the yaw
rate & G sensor.
3CHECK THE VDCCM&H/U.
1) Connect all the connectors.
2) Erase the memory.
3) Perform the inspection mode.
4) Read the DTC.
Is the same DTC displayed? Replace the
VDCCM&H/U.
Go to step 4.
4CHECK OTHER DTC DETECTION.Is any other DTC displayed? Perform the diag-
nosis according to
DTC.
Te m p o r a r y p o o r
contact occurs.

VDC(diag)-73
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AO:DTC C0071 STEERING ANGLE SENSOR COMMUNICATION MALFUNCTION
DTC DETECTING CONDITION:
Defective steering angle sensor
TROUBLE SYMPTOM:
VDC does not operate.
WIRING DIAGRAM:
B310
1234
B231
12034
B231
E
241
3
B310 VDCCM & H/U
TWISTED PAIR LINE
STEERINGANGLESENSOR
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
VDC00376
MAIN SBF
NO.33
E
BATTERY
IGNITIONSWITCH