2009 SUBARU TRIBECA light

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)-11
Electrical Component Location
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
4. Electrical Component Location
A: LOCATION
(1) VDC control module & hydraulic
control unit (VDCCM&H/U)
(6) VDC indicator light (11) ABS wheel speed sensor
(7) VDC warning light and TCS OFF
indicator light
(12) Yaw rate & lateral G sensor
(2) Relay box (13) Data link connector
(3) Engine control module (ECM) (8) Steering angle sensor (14) Transmission control module
(TCM)(4) Brake warning light (EBD warning
light)
(9) TCS OFF switch
(10) Magnetic encoder (15) Stop light switch
(5) ABS warning light
(4)(5)(6)(7)
(8)
(1)
(2)
(3)
(15)
(14)
(12)
(13)
(11)(10)
(11)(10)
(9)
VDC00359

VDC(diag)-13
Control Module I/O Signal
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
5. Control Module I/O Signal
A: ELECTRICAL SPECIFICATION
NOTE:
•Terminal numbers in VDCCM&H/U connector are shown in the figure.
•When the connector is removed from VDCCM&H/U, the ABS warning light, VDC warning light and TCS
OFF indicator light illuminate.
VDC00365
B310
2627284344252423
12131411109
201918171615
43218765
2122
40414245463938373433323130293536

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)