SUBARU TRIBECA 2009 1.G Service Workshop Manual

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.

VDC(diag)-21
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
11 CHECK THE HARNESS CONNECTOR BE-
TWEEN VDCCM&H/U AND CHASSIS
GROUND.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the
VDCCM&H/U.
3) Measure the resistance of harness
between VDCCM&H/U connector and chassis
ground.
Connector & terminal
(B310) No. 43 — Chassis ground:
Is the resistance less than 0.5
Ω?
Go to step 12.Repair the open
circuit in harness
between
VDCCM&H/U and
inhibitor side con-
nector, and poor
contact of coupling
connector.
12 CHECK POOR CONTACT IN CONNECTOR.Is there poor contact in control
module power supply, ground
circuit and data link connector?
Repair the con-
nector.
Replace the
VDCCM&H/U.
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Step Check Yes No

VDC(diag)-22
Read Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
7. Read Diagnostic Trouble
Code (DTC)
A: OPERATION
For details concerning DTC reading procedure, re-
fer to “Subaru Select Monitor”. 16, Subaru Select Monitor.>

VDC(diag)-23
Inspection Mode
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
8. Inspection Mode
A: PROCEDURE
Reproduce the malfunction occurrence condition
as possible.
Drive the vehicle at least ten minutes.
NOTE:
Make sure the vehicle is not dragged to one side
under usual driving condition.

VDC(diag)-24
Clear Memory Mode
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
9. Clear Memory Mode
A: OPERATION
For details concerning DTC clear operation, refer to
“Subaru Select Monitor”. Subaru Select Monitor.>

VDC(diag)-25
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
10.Warning Light Illumination Pattern
A: INSPECTION
1) When warning lights or indicator lights do not illuminate in accordance with this illumination pattern, there
must be an electrical malfunction.
2) When warning lights or indicator lights remain constantly OFF, check the combination meter circuit or CAN
communication circuit. VDC INDICATOR LIGHT DO NOT COME ON, Warning Light Illumination Pattern.>
3) When ABS warning light does not go off, check the combination meter circuit. WARNING LIGHT DOES NOT GO OFF, Warning Light Illumination Pattern.>
(1) Ignition switch (8) 1.5 seconds (12) Brake warning light (EBD warning
light)(2) OFF (9) VDC indicator light
(3) ON (10) VDC warning light and TCS OFF
indicator light
(13) Parking brake
(4) Engine start (14) Released
(5) ABS warning light (11) Several seconds (depending on
engine coolant temperature)(6) Light OFF
(7) Light ON
VDC00214
(2)
(6) (6)
(7)
(6) (6)
(7)
(8)
(6) (6)
(7)
(11)
(3) (3)
(4)
(1)
(5)
(9)
(10)
(6)(7)
(12)
(14)(13)

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. 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. 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)-27
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
C: ABS WARNING LIGHT DOES NOT COME ON
DETECTING CONDITION:
•Defective combination meter
•Defective harness
TROUBLE SYMPTOM:
When the ignition switch is turned to ON (engine OFF), ABS warning light does not come on.
WIRING DIAGRAM:
B16
12
B38
E
MAIN SBF
SBF-6
E
NO.5
B16
B404
A3A4
12
34B405
1234 5678910 11 12 13 14 15 16 17 18 19 20
BATTERY
IGNITIONSWITCH
BRAKE FLUIDLEVEL SWITCH
PARKING BRAKESWITCH
BRAKEWARNINGLIGHTABSWARNINGLIGHT
316
B310B38
i3
i10A:
i11B:
VDCCM & H/U
B8
1817B403
i2B7B6
VDC00369
12
B405
1234
B403
567821943
10
2422 23 25
1112131415161718192021
B310
1234
1516171819202122232425262728293031323334353637383940414245464344568910 11 12 13 147
1234567891011121314
i11B:
123456789101112131415161718192021222324252627282930
i10A:

VDC(diag)-28
Warning Light Illumination Pattern
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK OTHER LIGHTS TURN ON.
Tu r n t h e i g n i t i o n s w i t c h t o O N . ( E n g i n e O F F )
Do other warning lights illumi-
nate?
Go to step 2.Check the combi-
nation meter.
2READ DTC.
Read the DTC. Diagnostic Trouble Code (DTC).>
Is DTC displayed? Perform the diag-
nosis according to
DTC.
Go to step 3.
3CHECK GROUND SHORT CIRCUIT OF HAR-
NESS.
1) Turn the ignition switch to OFF.
2) Disconnect the connector (B310) from the
VDCCM&H/U.
3) Disconnect the connector (i11) from combi-
nation meter.
4) Measure the resistance between
VDCCM&H/U connector and chassis ground.
Connector & terminal
(B310) No. 16 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 4.Repair the har-
ness connector
between
VDCCM&H/U and
combination
meter.
4CHECK VDCCM.
1) Connect the connector (B310) to
VDCCM&H/U.
2) Turn the ignition switch to ON.
3) Measure the resistance between the com-
bination meter connector and chassis ground
soon after the ignition switch is turned to ON
(within 1.5 seconds).
Connector & terminal
(i11) No. B6 — Chassis ground:
Is the resistance more than 1
MΩ?
Check the combi-
nation meter.
Replace the
VDCCM&H/U.