ignition SUBARU TRIBECA 2009 1.G Service Workshop Manual

VDC(diag)-2
Basic Diagnostic Procedure
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
NOTE:
•To check the harness for broken wires or short circuits, shake problem spot or connector.
•Refer to “Check List for Interview”.
Step Check Yes No
1CHECK PRE-INSPECTION.
1) Ask the customer when and how the trou-
ble occurred using the interview checklist.
view.>
2) Before performing diagnostics, check the
component which might affect VDC problems.
Description.>
Is the component that might
influence the VDC problem
normal?
Go to step 2.Repair or replace
each component.
2CHECK INDICATION OF DTC.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON, and the Sub-
aru Select Monitor power switch to ON.
4) Read the DTC. OPERATION, Read Diagnostic Trouble Code
(DTC).>
NOTE:If the communication function of the Subaru Se-
lect Monitor cannot be executed normally,
check the communication circuit. VDC(diag)-19, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Sub-
aru Select Monitor.>
5) Record all DTCs and freeze frame data.
Is DTC displayed? Go to step 4.Go to step 3.
3PERFORM GENERAL DIAGNOSTICS.
1) Inspect using “General Diagnostic Table”.
Diagnostic Table.>
2) Perform the clear memory mode. VDC(diag)-24, OPERATION, Clear Memory
Mode.>
3) Perform the inspection mode. VDC(diag)-23, PROCEDURE, Inspection
Mode.>
4) Read the DTC. OPERATION, Read Diagnostic Trouble Code
(DTC).>
5) Check the DTC is not displayed.
Do the VDC warning light and
ABS warning light go off after
starting the engine?
Finish the diagno-
sis.
Check the combi-
nation meter cir-
cuit. VDC(diag)-29,
ABS WARNING
LIGHT DOES NOT
GO OFF, Warning
Light Illumination
Patter n.> VDC(diag)-26,
VDC WARNING
LIGHT, TCS OFF
INDICATOR
LIGHT AND VDC
INDICATOR
LIGHT DO NOT
COME ON, Warn-
ing Light Illumina-
tion Pattern.>

VDC(diag)-4
Check List for Interview
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
2. Check List for Interview
A: CHECK
Check the following item about the vehicle’s state.
1. STATE OF ABS WARNING LIGHT
ABS warning light
come on. Always
Sometimes
Only once
Does not come on
• When/How long does it come on?
Ignition key position LOCK
ACC
ON (before starting engine)
START
ON (after starting engine, while engine is running)
ON (after starting engine, engine is stop)
Timing Immediately after turning the ignition switch to ON
Immediately after turning the ignition switch to START
Accelerating — km/h
— MPH
While traveling at a constant speedkm/h MPH
Reducing speed — km/h
— MPH
When turning to the rightSteering angle: deg
Steering time: Sec.
When turning to the leftSteering angle: deg
Steering time: Sec.
When operating other electrical parts
• Part name:
• Operating condition:

VDC(diag)-5
Check List for Interview
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
2. STATE OF VDC WARNING LIGHT AND TCS OFF INDICATOR LIGHT
VDC warning light
and TCS OFF indi-
cator light come on.
Always
Sometimes
Only once
Does not come on
• When/How long does it come on?
Ignition key position LOCK
ACC
ON (before starting engine)
START
ON (after starting engine, while engine is running)
ON (after starting engine, engine is stop)
Timing Immediately after turning the ignition switch to ON
Immediately after turning the ignition switch to START
Accelerating — km/h
— MPH
While traveling at a constant speedkm/h MPH
Reducing speed — km/h
— MPH
When turning to the rightSteering angle: deg
Steering time: Sec.
When turning to the leftSteering angle: deg
Steering time: Sec.
When operating other electrical parts
• Part name:
• Operating condition:

VDC(diag)-6
Check List for Interview
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
3. STATE OF VDC INDICATOR LIGHT
VDC indicator light
comes on. Always
Sometimes
Only once
Does not come on
• When/How long does it come on?
Ignition key position LOCK
ACC
ON (before starting engine)
START
ON (after starting engine, while engine is running)
ON (after starting engine, engine is stop)
Timing Immediately after turning the ignition switch to ON
Immediately after turning the ignition switch to START
Accelerating — km/h
—
MPH
While traveling at a constant speedkm/h MPH
Reducing speed — km/h
— MPH
When turning to the rightSteering angle: deg
Steering time: Sec.
When turning to the leftSteering angle: deg
Steering time: Sec.
When operating other electrical parts
• Part name:
• Operating condition:

VDC(diag)-14
Control Module I/O Signal
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Description
Te r m i n a l
No.
(+) — (–)
Input/Output signal
Measured value and measuring conditions
Pow er s up p ly 1 — 43 10 — 15 V w h e n t h e i gn i t io n sw it ch i s ON .
ABS wheel speed
sensor
Front LH wheelPowe r s u pp ly 27 — 4 3 8 . 5 — 1 3. 5 V
Signal 41 5 — 17 mA: Rectangle waveform
Front RH wheelPower supply 42 — 43 8.5 — 13.5 V
Signal 28 5 — 17 mA: Rectangle waveform
Rear LH wheelPower supply 25 — 43 8.5 — 13.5 V
Signal 39 5 — 17 mA: Rectangle waveform
Rear RH wheelPower supply 26 — 43 8.5 — 13.5 V
Signal 40 5 — 17 mA: Rectangle waveform
Ya w r a t e & l a t e r a l G s e n s o r34 — 20 Serial communicationSteering angle sensor
CAN communication line (+) 34 Serial communication
CAN communication line (–) 20 Serial communication
Valve relay power supply 44 — 43 10 — 15 V when the ignition switch is ON.
Motor power supply 45 — 46 10 — 15 V when the ignition switch is ON.
ABS warning light 16 — 43After turning the ignition switch to ON, 10 — 15 V during 1.5
seconds and less than 1.5 V after 1.5 seconds passed.
Brake warning light (EBD warning light) 3 — 43After turning the ignition switch to ON, 10 — 15 V during 1.5
seconds and less than 1.5 V after 1.5 seconds passed.
Stop light switch 18 — 43Less than 1.5 V when the stop light is OFF; otherwise, 10 —
15 V when the stop light is ON.
Subaru Select Monitor 32 — 43 0 ←→ 12 V pulse (in communication)
Ve h i c l e s p e e d o u t p u t s i g n a l 3 3 0 ←→ 5 V pulse
Ground 43 —
Relay box
Relay power supply 2 — 43 10 — 15 V when the ignition switch is ON.
Motor relay drive 30 — 43After turning the ignition switch to ON, 1.5 V after 10 — 15,
motor startup.
Fa i l s afe r e lay d r ive 31 — 4 3 W he n t h e i g ni t io n swit c h i s ON, l es s t ha n 1 . 5 V.

VDC(diag)-15
Control Module I/O Signal
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
B: WIRING DIAGRAM
(1) Battery (16) Rear inlet solenoid valve RH (30) Data link connector
(2) Ignition switch (17) Rear outlet solenoid valve RH (31) TCS OFF switch
(3) VDC control module & hydraulic
control unit (VDCCM&H/U)
(18) Linear valve 1 (32) Steering angle sensor
(19) Linear valve 2 (33) Yaw rate & lateral G sensor
(4) VDC control module (20) Pressure sensor (34)

Tr a n s m i s s i o n c o n t r o l m o d u l e
(TCM)(5) Relay box (21) Stop light switch
(6) Motor relay (22) Stop light (35) Engine control module (ECM)
(7) Fail safe relay (23) VDC indicator light (36) Body integrated unit
(8) Motor (24) VDC warning light and TCS OFF
indicator light
(37)

Fr o nt A B S w he e l sp ee d se n so r L H
(9) Valve relay
(10) Front inlet solenoid valve LH (25) ABS warning light (38)

Fr o nt A B S w he e l sp e ed se n so r
RH(11) Front outlet solenoid valve LH (26) Brake warning light
(12) Front inlet solenoid valve RH (27) Parking brake switch (39) Rear ABS wheel speed sensor LH
(13) Front outlet solenoid valve RH (28) Brake fluid level switch (40) Rear ABS wheel speed sensor
RH(14) Rear inlet solenoid valve LH (29) Combination meter
(15) Rear outlet solenoid valve LH
VDC00366
M
(17)(4)(16)
(19)
(20)
(18)
(38)
(37)
(32)
(33)
(36)
(34)
(35)
(40)
(39)
(15)
(14)
(13)
(12)
(7)
(22)(21)
(31)
(23)(29)
(24)
(25)
(26)
(27) (28)(30)
(1)
(2)
(6)
(11)
(10)
(9)
(8)
(3)
(5)

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. 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.
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)”. 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. 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)-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.
12, ABS
Sequence Con-
trol.>
VDC
sequence
control
Operate the valve and
pump motor continuously
to perform the VDC
sequence control.
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)-19
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
B: INSPECTION
1. COMMUNICATION FOR INITIALIZING IMPOSSIBLE
DETECTING CONDITION:
Defective harness connector
TROUBLE SYMPTOM:
Communication is impossible between VDC and Subaru Select Monitor.
WIRING DIAGRAM:
MAIN SBF
SBF-6
NO.33
B310
E
E
32431
VDCCM & H/U
B402
12345678
910 11 12 13 14 15 16
BATTERY
IGNITIONSWITCH
DATA LINKCONNECTOR
B402
10
1
B310
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
VDC00368

VDC(diag)-20
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK IGNITION SWITCH.Is the ignition switch ON? Go to step 2.Turn the ignition
switch to ON, and
select VDC mode
using Subaru
Select Monitor.
2CHECK BATTERY.
1) Turn the ignition switch to OFF.
2) Measure the battery voltage.
Is the voltage more than 11 V? Go to step 3.Charge or replace
the battery.
3CHECK BATTERY TERMINAL.Is there poor contact at battery
terminal?
Repair or tighten
the battery termi-
nal.
Go to step 4.
4CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to ON.
2) Using the Subaru Select Monitor, check
whether communication to other system can
be executed normally.
Are the system name and
model year displayed on Sub-
aru Select Monitor?
Go to step 8.Go to step 5.
5CHECK SUBARU SELECT MONITOR COM-
MUNICATION.
1) Turn the ignition switch to OFF.
2) Disconnect the VDCCM&H/U connector.
3) Turn the ignition switch to ON.
4) Check whether communication to other
systems can be executed normally.
Are the system name and
model year displayed on Sub-
aru Select Monitor?
Replace the
VDCCM&H/U.
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 6.
6CHECK HARNESS CONNECTOR BETWEEN
EACH CONTROL MODULE AND DATA LINK
CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the VDCCM&H/U, ECM and
TCM.
3) Measure the resistance between data link
connector and chassis ground.
Connector & terminal
(B402) No. 10 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 7.Repair the har-
ness and connec-
tor between each
control module
and data link con-
nector.
7CHECK THE VDCCM&H/U OUTPUT SIG-
NALS.
1) Turn the ignition switch to ON.
2) Measure the voltage between data link con-
nector and chassis ground.
Connector & terminal
(B402) No. 10 (+) — Chassis ground (–):
Is the voltage less than 1 V? Go to step 8.Repair the har-
ness and connec-
tor between each
control module
and data link con-
nector.
8CHECK THE HARNESS CONNECTOR BE-
TWEEN VDCCM&H/U AND DATA LINK CON-
NECTOR.
Measure the resistance between VDCCM&H/U
connector and data link connector.
Connector & terminal
(B310) No. 32 — (B402) No. 10:
Is the resistance less than 0.5
Ω?
Go to step 9.Repair harness
and connector
between
VDCCM&H/U and
data link connec-
tor.
9CHECK INSTALLATION OF VDCCM&H/U
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 the VDCCM&H/U connector
inserted into VDCCM&H/U
until the clamp locks onto it?
Go to step 10.Insert VDCCM&H/
U connector into
VDCCM&H/U.
10 CHECK POWER SUPPLY CIRCUIT.
1) Turn the ignition switch to ON.(Engine OFF)
2) Measure the ignition power supply voltage
between VDCCM&H/U connector and chassis
ground.
Connector & terminal
(B310) No. 1 (+) — Chassis ground (–):
Is the voltage 10 — 15 V? Go to step 11.Repair open circuit
in harness
between
VDCCM&H/U and
battery.