system abs SUBARU TRIBECA 2009 1.G Service Owner's Manual

DS-32
General Diagnostic Table
DRIVE SHAFT SYSTEM
9. General Diagnostic Table
A: INSPECTION
NOTE:
Vibration while cruising may be caused by an unbalanced tire, improper tire inflation pressure, improper
wheel alignment, etc.
Symptom Possible cause Corrective action
Noise or vibration from propeller shaftCenter bearing Check the center bearing. <Ref. to DS-12, CEN-
TER BEARING FREE PLAY, INSPECTION, Pro-
peller Shaft.>
Runout of propeller shaft Check for deflection of the propeller shaft. <Ref.
to DS-12, RUNOUT OF PROPELLER SHAFT,
INSPECTION, Propeller Shaft.>
Loose or gap at connections Check the joints and connectors. <Ref. to DS-11,
JOINTS AND CONNECTIONS, INSPECTION,
Propeller Shaft.>
Check the spline and bearing. <Ref. to DS-11,
SPLINES AND BEARING, INSPECTION, Pro-
peller Shaft.>
Abnormal wheel vibrationWheel is out of balance. Check the wheel balance. <Ref. to WT-8,
ADJUSTMENT, Wheel Balancing.>
Fr o n t wh e el al i gn me n t Che ck t h e f r on t whe e l a li g nm en t . <Re f. t o F S - 6 ,
INSPECTION, Wheel Alignment.>
Rear wheel alignment Check the rear wheel alignment. <Ref. to RS-7,
INSPECTION, Wheel Alignment.>
Fr o n t s tr ut Che ck t h e f r on t st r u t . < R e f. t o F S - 21 , I N S P EC -
TION, Front Strut.>
Rear shock absorber Check the rear shock absorber. <Ref. to RS-12,
INSPECTION, Rear Shock Absorber.>
Fr o n t d r i ve sh af t Che ck t h e f r on t dr i ve s ha f t. < R e f. t o D S - 2 7,
INSPECTION, Front Drive Shaft.>
Rear drive shaft Check the rear driveshaft. <Ref. to DS-31,
INSPECTION, Rear Drive Shaft.>
Fr o n t h ub u ni t b e ar i n g Che ck th e f r on t h ub u n it b e ar i n g. < Re f. to DS - 2 0 ,
INSPECTION, Front Hub Unit Bearing.>
Rear hub unit bearing Check the rear hub unit bearing. <Ref. to DS-23,
INSPECTION, Rear Hub Unit Bearing.>
Noise from the underbodyWheel is out of balance. Check the wheel balance. <Ref. to WT-8,
ADJUSTMENT, Wheel Balancing.>
Fr o n t wh e el al i gn me n t Che ck t h e f r on t whe e l a li g nm en t . <Re f. t o F S - 6 ,
INSPECTION, Wheel Alignment.>
Rear wheel alignment Check the rear wheel alignment. <Ref. to RS-7,
INSPECTION, Wheel Alignment.>
Fr o n t s tr ut Che ck t h e f r on t st r u t . < R e f. t o F S - 21 , I N S P EC -
TION, Front Strut.>
Rear shock absorber Check the rear shock absorber. <Ref. to RS-12,
INSPECTION, Rear Shock Absorber.>

RS-16
Rear Sub Frame
REAR SUSPENSION
9. Rear Sub Frame
A: REMOVAL
1) Separate the front exhaust pipe and rear ex-
haust pipe.
2) Remove the rear exhaust pipe and muffler.
3) Remove the propeller shaft.
<Ref. to DS-10, REMOVAL, Propeller Shaft.>
4) Remove the spare tire hoist. <Ref. to WT-13,
REMOVAL, Spare Tire Hoist.>
5) Remove the rear parking brake cable from the
parking brake assembly. <Ref. to PB-7, REMOV-
AL, Parking Brake Assembly (Rear Disc Brake).>
6) Detach the brake hose, and remove the rear
brake caliper from the vehicle.
7) Disconnect the ABS wheel speed sensor con-
nector.
8) Remove the bolts on the bottom side of the
shock absorber.
9) Support the sub frame using a jack.
10) Remove the front sub frame.
11) Remove the rear sub frame support.
12) Remove the rear sub frame.
B: INSTALLATION
NOTE:
•Be sure to use a new self-locking nut.
•Always tighten the stabilizer bushing in the state
where the vehicle is at curb weight and the wheels
are in full contact with the ground.
1) Install in the reverse order of removal.
Tightening torque:
Refer to “COMPONENT” of “General Descrip-
tion” for the tightening torque. <Ref. to RS-3,
COMPONENT, General Description.>
2) Bleed air from brake system.
3) Inspect the wheel alignment and adjust if neces-
sary.
C: INSPECTION
Check the removed parts for wear, damage and
crack, and repair or replace them if faulty.
RS-00194
RS-00195
RS-00196
RS-00197
RS-00198

TPM(diag)-8
Subaru Select Monitor
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
5. Subaru Select Monitor
A: OPERATION
1. READ DIAGNOSTIC TROUBLE CODE
(DTC)
1) Prepare the Subaru Select Monitor kit. <Ref. to
TPM(diag)-4, SPECIAL TOOL, PREPARATION
TOOL, General Description.>
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to Subaru Select Monitor.
<Ref. to TPM(diag)-4, SPECIAL TOOL, PREPA-
RATION TOOL, General Description.>
4) Connect the Subaru Select Monitor to data link
connector.
(1) Data link connector is located in the lower
portion of instrument panel (on the driver's
side).
(2) Connect the diagnosis cable to data link
connector.
CAUTION:
Do not connect the scan tools except for Suba-
ru Select Monitor.
5) Turn the ignition switch to ON (engine OFF) and
turn the Subaru Select Monitor switch to ON.
6) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
7) On the «System Selection Menu» display
screen, select the {Tire Pressure Monitor} and
press the [YES] key.
8) Press the [YES] key after the {Model Year} is
displayed.
9) On the «Tire Pressure Monitor Diagnosis»
screen, select the {DTC Display}, and then press
the [YES] key.
NOTE:
•For details concerning operation procedure, re-
fer to the “SUBARU SELECT MONITOR OPERA-
TION MANUAL”.
•For details concerning DTCs, refer to List of Di-
agnostic Trouble Code (DTC). <Ref. to TPM(diag)-
26, List of Diagnostic Trouble Code (DTC).>
•Display all the DTCs detected.
•If a particular DTC is not properly stored in mem-
ory (due to a drop in occupant detection control
module power supply, etc.) when a problem oc-
curs, the DTC which is suffixed with a question
mark appears on the Subaru Select Monitor dis-
play. This shows it may be an unreliable reading.
10) If communication is not possible between the
tire pressure monitoring control module and the
Subaru Select Monitor, check the communication
circuit. <Ref. to TPM(diag)-11, COMMUNICATION
FOR INITIALIZING IMPOSSIBLE, INSPECTION,
Subaru Select Monitor.>
11) When DTC is not displayed, check the indicator
circuit and communication circuit. <Ref. to TPM(di-
ag)-14, WITHOUT DTC, INSPECTION, Subaru
Select Monitor.>
(1) Data link connector
ABS00111
ABS00112
LAN00189
(1) Power switch
ABS00114
(1)

VDC(diag)-9
General Description
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
3. General Description
A: CAUTION
1. SRS AIRBAG SYSTEM
Airbag system wiring harness is routed near the
ABS wheel speed sensor and VDCCM&H/U.
CAUTION:
•All airbag system wiring harness and con-
nectors are colored yellow. Do not use the elec-
trical test equipment on these 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 (GB-7) bolt
of 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-10, CHECK HY-
DRAULIC UNIT VDC OPERATION WITH BRAKE
TESTER, INSPECTION, VDC Control Module &
Hydraulic Control Unit (VDCCM&H/U).>
•Without brake tester <Ref. to VDC-9, CHECK-
ING THE HYDRAULIC UNIT VDC OPERATION
USING A PRESSURE GAUGE, INSPECTION,
VDC Control Module & Hydraulic Control Unit (VD-
CCM&H/U).>
5. BRAKE DRAG
Check for brake drag.
6. BRAKE PAD AND ROTOR
Check the brake pad and rotor.
•Front <Ref. to BR-13, INSPECTION, Front Brake
Pad.> <Ref. to BR-14, INSPECTION, Front Disc
Rotor.>
•Rear <Ref. to BR-19, INSPECTION, Rear Brake
Pad.> <Ref. to BR-20, INSPECTION, Rear Disc
Rotor.>
7. TIRE
Check the tire specifications, tire wear and air pres-
sure. <Ref. to WT-2, SPECIFICATION, General
Description.>

VDC(diag)-16
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
6. Subaru Select Monitor
A: OPERATION
1. READ DIAGNOSTIC TROUBLE CODE
(DTC)
1) Prepare the Subaru Select Monitor kit. <Ref. to
VDC(diag)-10, SPECIAL TOOL, PREPARATION
TOOL, General Description.>
2) Connect the diagnosis cable to Subaru Select
Monitor.
3) Insert the cartridge to the Subaru Select Monitor.
<Ref. to VDC(diag)-10, SPECIAL TOOL, PREPA-
RATION TOOL, General Description.>
4) Connect the Subaru Select Monitor to data link
connector.
(1) Data link connector is located in the lower
portion of instrument panel (on the driver's
side).
(2) Connect the diagnosis cable to data link
connector.
CAUTION:
Do not connect the scan tools except for Suba-
ru Select Monitor.
5) Turn the ignition switch to ON (engine OFF) and
turn the Subaru Select Monitor switch to ON.
6) On the «Main Menu» display screen, select the
{Each System Check} and press the [YES] key.
7) On the «System Selection Menu» display
screen, select the {Brake Control} and press the
[YES] key.
8) Press the [YES] key after the {VDC AWD AT} is
displayed.
9) On the «VDC Diagnosis» screen, select the {Di-
agnostic Code(s) Display}, and then press the
[YES] key.
NOTE:
•For details concerning operation procedure, re-
fer to the “SUBARU SELECT MONITOR OPERA-
TION MANUAL”.
•For details concerning DTCs, refer to “List of Di-
agnostic Trouble Code (DTC)”. <Ref. to VDC(di-
ag)-34, List of Diagnostic Trouble Code (DTC).>
•DTCs are displayed up to three in detected or-
der.
10) If VDC and Subaru Select Monitor cannot com-
municate, check the communication circuit. <Ref.
to VDC(diag)-19, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Subaru
Select Monitor.>
(1) Data link connector
ABS00111
ABS00112
VDC00367(1)
(1) Power switch
Display Contents to be monitored
CurrentIndicate the latest malfunction DTC on
the Subaru Select Monitor display.
Old
The latest DTC in previous troubles is
displayed on Subaru Select Monitor dis-
play screen.
Older
The second latest DTC in previous trou-
bles is displayed on Subaru Select Moni-
tor display screen.
ABS00114
(1)

VDC(diag)-17
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
2. READ CURRENT DATA
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Brake Control} and press the [YES] key.
3) Press the [YES] key after {VDC AWD AT} is displayed.
4) On the «Brake Control Diagnosis» display screen, select the {Current Data Display/Save}, and then press
the [YES] key.
5) On the «Display Menu» screen, select the data display method and press the [YES] key.
6) Using a scroll key, scroll the display screen up or down until necessary data is shown.
•A list of the support data is shown in the following table.
NOTE:
For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
Display Contents to be monitored Unit of measure
FR Wheel SpeedWheel speed detected by front ABS wheel speed sensor RH is dis-
played.km/h or MPH
FL Wheel SpeedWheel speed detected by front ABS wheel speed sensor LH is dis-
played.km/h or MPH
RR Wheel SpeedWheel speed detected by rear ABS wheel speed sensor RH is dis-
played.km/h or MPH
RL Wheel SpeedWheel speed detected by rear ABS wheel speed sensor LH is dis-
played.km/h or MPH
Fr o nt / Re ar G S e ns o r Ve h ic le f r on t / re a r ac ce le ra t io n d e te c te d by G se n so r is d i sp layed .m/s2
Lateral G Sensor Vehicle lateral acceleration detected by G sensor is displayed.m/s2
IG power supply voltage Voltage supplied to VDCCM&H/U is displayed. V
Steering Angle Sensor Steering angle detected by steering angle sensor is displayed. deg
Ya w R a t e S e n s o r V e h i c l e a n g u l a r s p e e d d e t e c t e d b y y a w r a t e s e n s o r i s d i s p l a y e d . d e g / s
Pressure Sensor Brake fluid pressure detected by pressure sensor is displayed. bar
ABS Control Flag ABS control condition is displayed. ON or OFF
EBD Control Flag EBD control condition is displayed. ON or OFF
Brake Switch Brake ON/OFF is displayed. ON or OFF
ABS Warning Light ON operation of the ABS warning light is displayed. ON or OFF
EBD Warning Light ON operation of the EBD warning light is displayed. ON or OFF
Motor Relay Signal Motor relay operation signal is displayed. ON or OFF
Motor Relay Monitor Motor relay monitor signal is displayed. ON or OFF
TCS Control Flag TCS control condition is displayed. ON or OFF
Va l ve R e l ay S i g n a l Va l v e r e l ay o p e r a t i o n s i g n a l i s d i s p l ay e d . O N o r O F F
VDC Control Flag VDC control condition is displayed. ON or OFF
VDC Warning Light ON operation of the VDC warning light is displayed. ON or OFF
OFF Light ON/OFF condition of TCS OFF indicator light is displayed. ON or OFF
E/G Control Prohibited Flag Engine control command signal is displayed. 1 or 0
OFF Switch Signal Operation condition of TCS OFF switch is displayed. ON or OFF
Motor Fail Safe Relay Drive
SignalMotor fail safe relay drive signal is displayed. ON or OFF

VDC(diag)-18
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
3. CLEAR MEMORY MODE
1) On the «Main Menu», select the {2. Each Sys-
tem Check} and press the [YES] key.
2) On the «System Selection Menu» display
screen, select the {Brake Control} and press the
[YES] key.
3) Press the [YES] key after {VDC AWD AT} is dis-
played.
4) On the «Brake Control Diagnosis» display
screen, select the {Memory Clear} and press the
[YES] key.
5) When “Done” and “Turn ignition switch OFF” are
shown on the display screen, turn the Subaru Se-
lect Monitor and ignition switch to OFF.
NOTE:
For details concerning operation procedure, refer
to the “SUBARU SELECT MONITOR OPERATION
MANUAL”.
4. SEQUENCE CONTROL
5. FREEZE FRAME DATA
NOTE:
•Data stored at the time of trouble occurrence is
shown on display.
•Each time trouble occurs, the latest information
is stored in the freeze frame data in memory.
Display Contents to be monitored
Clear memory? DTC deleting function
Display Contents to be monitoredReference tar-
get
ABS
sequence
control
Operate the valve and
pump motor continuously
to perform the ABS
sequence control.
<Ref. to VDC-
12, ABS
Sequence Con-
trol.>
VDC
sequence
control
Operate the valve and
pump motor continuously
to perform the VDC
sequence control.
<Ref. to VDC-
15, VDC
Sequence Con-
trol.>
Display Contents to be monitored
IG CounterNumber of times ignition switch turned to
ON is displayed.
DTC The recorded failure code is displayed.
FR Wheel
Speed
Wheel speed detected by front ABS
wheel speed sensor RH is displayed in
km/h or MPH.
FL Wheel Speed
Wheel speed detected by front ABS
wheel speed sensor LH is displayed in
km/h or MPH.
RR Wheel
Speed
Wheel speed detected by rear ABS
wheel speed sensor RH is displayed in
km/h or MPH.
RL Wheel
Speed
Wheel speed detected by rear ABS
wheel speed sensor LH is displayed in
km/h or MPH.
Ve h i c l e S p e e dVe h i c l e s p e e d c a l c u l a t e d b y V D C c o n t r o l
module is displayed.
G Sensor First
ShaftThe sensor value for a 45° angle crossed
2 axis G sensor is displayed.G Sensor Sec-
ond Shaft
Ya w R a t e S e n -
sor
Ve h i c l e a n g u l a r s p e e d d e t e c t e d b y y a w
rate sensor is displayed.
IG power supply
voltage
Vo l t a g e s u p p l i e d t o V D C c o n t r o l m o d u l e
is displayed.
Steering Angle
Sensor
Steering angle detected by steering
angle sensor is displayed.
Pressure sen-
sor output
Brake fluid pressure detected by pres-
sure sensor is displayed.
Engine SpeedEngine speed on malfunction occur-
rence is displayed.
Acceleration
Opening AngleAcceleration opening is displayed.
Gear positionGear position on malfunction occurrence
is displayed.
Steering Angle
Sensor Malfunc-
tion Code
The recorded steering angle sensor fail-
ure code is displayed?
ABS Control
FlagABS control condition is displayed.
EBD Control
FlagEBD control condition is displayed.
Brake Switch Brake ON/OFF is displayed.
TCS Control
FlagTCS control condition is displayed.
VDC Control
FlagVDC control condition is displayed.
E/G Control Flag
Absolute angle
recognition flag
Whether the absolute angle was deter-
mined is displayed.
OFF Switch Sig-
nal
Operation condition of TCS OFF switch
is displayed.

VDC(diag)-26
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
4) When the VDC indicator light, VDC warning light and TCS OFF indicator light do not go off, check the com-
bination meter circuit or CAN communication circuit. <Ref. to VDC(diag)-30, VDC INDICATOR LIGHT DOES
NOT GO OFF, Warning Light Illumination Pattern.>
NOTE:
•Even though the ABS warning light does not go off after 1.5 seconds from ABS warning light illumination,
the ABS system operates normally when the warning light goes off while driving at approximately 12 km/h (7
MPH). However, the ABS system does not work while the ABS warning light is illuminated.
•It may take several minutes before VDC warning light and TCS OFF indicator light goes off if the vehicle
is parked under low temperature for a specified time. This is not defective because it is resulted from low en-
gine coolant temperature.
•With the vehicle jack-up/lift-up or set on free rollers, when the wheels lock or spin after starting the engine,
ABS warning light, VDC warning light and TCS OFF indicator light may illuminate because VDCCM&H/U de-
tects the abnormal conditions from ABS wheel speed sensors. In this case, this is not a malfunction. Perform
the clear memory mode.
B: VDC WARNING LIGHT, TCS OFF INDICATOR LIGHT AND VDC INDICATOR
LIGHT DO NOT COME ON
DETECTING CONDITION:
•Defective combination meter
•Defective CAN communication
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), VDC indicator light, VDC warning light and TCS OFF
indicator light do not come on.
NOTE:
When pressing the TCS OFF switch for more than 10 seconds, the TCS OFF indicator light goes off and can-
not operate any more. When turning the ignition switch from OFF to ON, the OFF operation enabled status
is restored.
Step Check Yes No
1CHECK OTHER INDICATOR LIGHT.
Tu r n t h e i g n i t i o n s w i t c h t o O N .
Does other indicator light illu-
minate soon after “ON”.
Go to step 2.Perform the self-
diagnosis of com-
bination meter.
2CHECK VDCCM.
When the engine does not start, display the
current data of VDCCM using Subaru Select
Monitor.
Is “VDC warning light” output
set to “ON”?
Go to step 3.Replace the
VDCCM&H/U.
3CHECK LAN SYSTEM.
Perfor m the diagnosis for LAN system. <Ref. to
LAN(diag)-25, OPERATION, Read Diagnostic
Tr o u b l e C o d e ( D T C ) . >
Is there any fault in LAN sys-
tem?
Pe r for m t h e d ia g -
nosis according to
DTC for LAN sys-
tem.
Go to step 4.
4CHECK COMBINATION METER.
Check the combination meter.
Is combination meter OK? Replace the
VDCCM&H/U.
Repair the combi-
nation meter
assembly.

VDC(diag)-34
List of Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
11.List of Diagnostic Trouble Code (DTC)
A: LIST
DTCDetailed
codeDisplay Content of diagnosis Reference target
C0021 4211FR wheel speed sensor
open line
Open line of the front
ABS wheel speed sen-
sor RH
<Ref. to VDC(diag)-38, DTC C0021 FRONT ABS
WHEEL SPEED SENSOR RH OPEN LINE, Diag-
nostic Procedure with Diagnostic Trouble Code
(DTC).>
C0022
4221FR wheel speed sensor
system
Fr o nt A B S w h e el sp e ed
sensor RH signal mal-
function
<Ref. to VDC(diag)-42, DTC C0022 FRONT ABS
WHEEL SPEED SENSOR RH SIGNAL MAL-
FUNCTION, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
4222 FR wheel sensor noiseFr o nt A B S w h e el sp e ed
sensor RH signal noise
<Ref. to VDC(diag)-42, DTC C0022 FRONT ABS
WHEEL SPEED SENSOR RH SIGNAL NOISE,
Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
C0023 4231FL wheel speed sensor
open line
Open line of the front
ABS wheel speed sen-
sor LH
<Ref. to VDC(diag)-38, DTC C0023 FRONT ABS
WHEEL SPEED SENSOR LH OPEN LINE, Diag-
nostic Procedure with Diagnostic Trouble Code
(DTC).>
C0024
4241FL wheel speed sensor
signal system
Fr o nt A B S w h e el sp e ed
sensor LH signal mal-
function
<Ref. to VDC(diag)-42, DTC C0024 FRONT ABS
WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
4242 FL wheel sensor noiseFr o nt A B S w h e el sp e ed
sensor LH signal noise
<Ref. to VDC(diag)-42, DTC C0024 FRONT ABS
WHEEL SPEED SENSOR LH SIGNAL NOISE,
Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
C0025 4251RR wheel sensor open
line
Rear ABS wheel speed
sensor RH open line
<Ref. to VDC(diag)-38, DTC C0025 REAR ABS
WHEEL SPEED SENSOR RH OPEN LINE, Diag-
nostic Procedure with Diagnostic Trouble Code
(DTC).>
C0026
4261RR wheel speed sen-
sor signal system
Rear ABS wheel speed
sensor RH signal mal-
function
<Ref. to VDC(diag)-42, DTC C0026 REAR ABS
WHEEL SPEED SENSOR RH SIGNAL MAL-
FUNCTION, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
4262 RR wheel sensor noiseRear ABS wheel speed
sensor RH signal noise
<Ref. to VDC(diag)-42, DTC C0026 REAR ABS
WHEEL SPEED SENSOR RH SIGNAL NOISE,
Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
C0027 4271RL wheel speed sensor
open line
Rear ABS wheel speed
sensor LH open line
<Ref. to VDC(diag)-39, DTC C0027 REAR ABS
WHEEL SPEED SENSOR LH OPEN LINE, Diag-
nostic Procedure with Diagnostic Trouble Code
(DTC).>
C0028
4281RL wheel speed sensor
signal system
Rear ABS wheel speed
sensor LH signal mal-
function
<Ref. to VDC(diag)-43, DTC C0028 REAR ABS
WHEEL SPEED SENSOR LH SIGNAL MAL-
FUNCTION, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).>
4282 RL wheel sensor noiseRear ABS wheel speed
sensor LH signal noise
<Ref. to VDC(diag)-42, DTC C0028 REAR ABS
WHEEL SPEED SENSOR LH SIGNAL NOISE,
Diagnostic Procedure with Diagnostic Trouble
Code (DTC).>
C0031 4311FR hold valve malfunc-
tion
Fr o nt i nl e t s ol e no i d
valve RH malfunction in
VDCCM&H/U
<Ref. to VDC(diag)-45, DTC C0031 FRONT
INLET SOLENOID VALVE RH MALFUNCTION IN
VDCCM&H/U, Diagnostic Procedure with Diag-
nostic Trouble Code (DTC).>

VDC(diag)-52
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Y: DTC C0047 IMPROPER CAN COMMUNICATION
DTC DETECTING CONDITION:
CAN communication line circuit is open or shorted.
TROUBLE SYMPTOM:
•ABS does not operate.
•VDC does not operate.
Step Check Yes No
1CHECK LAN SYSTEM.
Perfor m the diagnosis for LAN system. <Ref. to
LAN(diag)-25, OPERATION, Read Diagnostic
Tr o u b l e C o d e ( D T C ) . >
Is there any fault in LAN sys-
tem?
Pe r for m t h e d ia g -
nosis according to
DTC for LAN sys-
tem.
Go to step 2.
2CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact in
VDCCM&H/U connector?
Repair the con-
nector.
Go to step 3.
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.
<Ref. to VDC-7,
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Te m p o r a r y p o o r
contact occurs.