engine SUBARU TRIBECA 2009 1.G Service Workshop Manual

VDC(diag)-48
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK THE VDCCM&H/U INPUT VOLTAGE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the
VDCCM&H/U.
3) Run the engine at idle.
4) Measure the 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 2.Repair the power
supply circuit.
2CHECK THE VDCCM&H/U GROUND CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance 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 3.Repair the
VDCCM&H/U
ground harness.
3CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact in con-
nector between generator, bat-
tery and VDCCM&H/U?
Repair the con-
nector.
Go to step 4.
4CHECK 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.
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 5.
5CHECK 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)-51
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK GENERATOR.
1) Start the engine.
2) Run the engine at idle after warming up.
3) Measure the voltage between generator
terminal B and chassis ground.
Te r m i n a l s
Generator B terminal (+) — Chassis
ground (–):
Is the voltage 10 — 15 V? Go to step 2.Repair the genera-
tor. SC(H6DO)-19,
Generator.>
2CHECK BATTERY TERMINAL.
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.
Are the positive and negative
battery terminals clamped
tightly?
Go to step 3.Tighten the termi-
nal.
3CHECK THE VDCCM&H/U INPUT VOLTAGE.
1) Disconnect the connector from the
VDCCM&H/U.
2) Run the engine at idle.
3) Operate the devices such as headlights, air
conditioner, defogger, etc. which produce
much electrical loading.
4) Measure the 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 4.Repair the power
supply circuit.
4CHECK THE VDCCM&H/U GROUND CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance 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 5.Repair the
VDCCM&H/U
ground harness.
5CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact in con-
nector between generator, bat-
tery and VDCCM&H/U?
Repair the con-
nector.
Go to step 6.
6CHECK 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.
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. VDC(diag)-34, List
of Diagnostic Trou-
ble Code (DTC).>
Te m p o r a r y p o o r
contact occurs.

VDC(diag)-54
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Step Check Yes No
1CHECK THE VDCCM&H/U INPUT VOLTAGE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the
VDCCM&H/U.
3) Run the engine at idle.
4) Measure the voltage between VDCCM&H/
U connector and chassis ground.
Connector & terminal
(B310) No. 44 (+) — Chassis ground (–):
Is the voltage 10 — 15 V? Go to step 2.Repair the har-
ness connector
between battery
and VDCCM&H/U.
2CHECK THE VDCCM&H/U GROUND CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the resistance 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 3.Repair the
VDCCM&H/U
ground harness.
3CHECK POOR CONTACT OF CONNEC-
TORS.
Is there poor contact in con-
nector between generator, bat-
tery and VDCCM&H/U?
Repair the con-
nector.
Go to step 4.
4CHECK 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.
VDC Control Mod-
ule & Hydraulic
Control Unit
(VDCCM&H/U).>
Go to step 5.
5CHECK 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)-72
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
AN:DTC C0057 TRANSMISSION SYSTEM MALFUNCTION
DTC DETECTING CONDITION:
Transmission System Defect
TROUBLE SYMPTOM:
•ABS does not operate.
•VDC does not operate.
Step Check Yes No
1CHECK AT SYSTEM.
1) Start the engine.
2) Check the DTC in AT system.
Is DTC of AT system dis-
played?
Repair the AT sys-
tem.
Go to step 2.
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.

VDC(diag)-88
General Diagnostic Table
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
Vibration or
noise
•When braking
suddenly
•When acceler-
ating suddenly
•While driving
on a slippery
road
Excessive
brake pedal
vibration
•Road surface (uneven)
•Incorrect wiring or piping connections
•VDCCM&H/U
•Brake booster
•Suspension play or fatigue (poor damp-
ing)
Noise from
VDCH/U
•VDCCM&H/U (mount bushing)
•Defective ABS wheel speed sensor or sensor
gap
•Brake pipe
•VDCCM&H/U
•Defective steering angle sensor or
improper neutral position
•Defective yaw rate & G sensor or
improper installation
Noise from
the front side
of vehicle
•VDCCM&H/U (mount bushing)
•Defective ABS wheel speed sensor or sensor
gap
•Master cylinder
•Brake caliper
•Brake pad
•Disc rotor
•Brake pipe
•Brake booster
•Suspension play or fatigue (poor damping)
•Axle and wheels
•Tire specifications, tire wear and air
pressures
Noise inside
passenger
seat
•VDCCM&H/U
•Defective steering angle sensor or
improper neutral position
•Defective yaw rate & G sensor or
improper installation
Noise from
the rear side
of vehicle
•Defective ABS wheel speed sensor or sensor
gap
•Brake caliper
•Brake pad
•Disc rotor
•Parking brake
•Brake pipe
•Suspension play or fatigue (poor damping)
•Axle and wheels
•Tire specifications, tire wear and air
pressures
Engine does not accelerate or
goes into a stall when accelerat-
ing suddenly or driving on a slip-
pery surface.
•VDCCM&H/U
•Defective ABS wheel speed sensor or sensor
gap
•Master cylinder
•Brake caliper
•Parking brake
•Incorrect wiring or piping
•Defective steering angle sensor or
improper neutral position
•Defective yaw rate & G sensor or
improper installation
•Brake pad
•Brake pipe
Symptom Main probable cause Other probable cause

VDC-21
Front ABS Wheel Speed Sensor
VEHICLE DYNAMICS CONTROL (VDC)
7. Front ABS Wheel Speed Sen-
sor
A: REMOVAL
1) Disconnect the ground cable from the battery.
2) Disconnect the ABS wheel speed sensor con-
nector in the engine compartment.
3) Remove the sensor harness from the clip.
4) Remove the clip which secures the sensor har-
ness to the front strut.
5) Remove the front ABS wheel speed sensor from
housing.
CAUTION:
•Be careful not to damage the sensor.
•Do not apply excessive force to the sensor
harness.
B: INSTALLATION
Install in the reverse order of removal.
Tightening torque:
7.5 N·m (0.76 kgf-m, 5.5 ft-lb)
CAUTION:
Be careful not to damage the sensor.
NOTE:
•Check the identification (mark) on the harness to
make sure there is no warpage. (W1 (White))
•Check if the harness is not pulled and does not
come in contact with the suspension or body during
steering wheel effort.
C: INSPECTION
1. CHECK WITH SUBARU SELECT MONI-
TOR
1) Connect the Subaru Select Monitor to the data
link connector.
2) Select {Current Data Display & Save}. Check if
the speed indicated on the display changes in the
same manner as the speedometer reading during
acceleration/deceleration when the steering wheel
is in the straight-ahead position.
3) If the speed indicated on the display does not
change, check the ABS wheel speed sensor. to VDC-22, ABS WHEEL SPEED SENSOR, IN-
SPECTION, Front ABS Wheel Speed Sensor.>
(1) To the front ABS wheel speed sensor connector
(2) Clip
VDC00349
VDC00350
(1)
(2)
DS-00249

CO(H6DO)-2
General Description
COOLING
1. General Description
A: SPECIFICATION
•Outside temperature: Less than 35°C (95°F)
Cooling systemElectric fan + Forced engine coolant circula-
tion system
To t a l e n g i n e c o o l a n t c a p a c i t y2(US qt, Imp qt) Approx. 7.2 (7.6, 6.3)
Wa t er p u mp
Ty p e C e n t r i f u g a l i m p e l l e r t y p e
Discharge performance I
Discharge rate
2 (US gal, Imp gal)/min)320 (84.5, 70.4)
Pump speed — Discharge pressure 5,500 rpm — 176.5 kPa (5.0 mAq)
Engine coolant temperature 80°C (176°F)
Impeller diameter mm (in) 73.2 (2.88)
Number of impeller vanes 6
Number of pump sprocket teeth 22
Thermostat
Ty p eWa x p el l et t yp e
Starting temperature to open 80 — 84°C (176 - 183°F)
Fully opens 95°C (203°F)
Va l ve l i f t m m ( i n ) 9 . 0 ( 0 . 3 5 4 ) o r m o r e
Va l ve b o r e m m ( i n ) 3 5 ( 1 . 3 8 )
Radiator fan
Motor inputMain fan W 160
Sub fan W 160
Fan di a me t er / B la deMain fan 320 mm (12.60 in)/5
Sub fan 320 mm (12.6 in)/7
Radiator
Ty p e C r o s s f l o w , p r e s s u r e t y p e
Core dimensions Width×Height×Thickness mm (in) 674.2 × 478.6 × 27 (26.543 × 18.842 × 1.06)
Pressure range in which
cap valve is openkPa (kg/cm2, psi)Above: 108±15 (1.1±0.15, 16±2)
Below: The atmospheric pressure or less
FinsCorrugated fin type
Reservoir tank Capacity2(US qt, Imp qt) 0.45 (0.48, 0.40)
A/C compressor load
Engine coolant temperature
Increase: less than 95°C
(203°F)
Decrease: less than 92°C
(198°F)
Increase: 95 — 101°C
(203 — 214°F)
Decrease: 92 — 99°C
(198 — 210°F)
Increase: more than 102°C
(216°F)
Decrease: more than
100°C (212°F)
OFF 0% Refer to fig. (1) 100%
ONMiddle pressure switch OFF Refer to fig. (2) 100%
Middle pressure switch ON Refer to fig. (3) 100%

CO(H6DO)-3
General Description
COOLING
•Outside temperature: 35°C (95°F) or more.
Ve h i c l e s p e e d A / C c o m p r e s s o r l o a d
Engine coolant temperature
Increase: less than
95°C (203°F)
Decrease: less than
92°C (198°F)
Increase: 95 — 101°C
(203 — 214°F)
Decrease: 92 — 99°C
(198 — 210°F)
Increase: more than
102°C (216°F)
Decrease: more than
100°C (212°F)
Driving speed 19 km/h (12
MPH) or less
Driving speed 10 km/h (6
MPH) or less
OFF Refer to fig. (1) 100%
ON
Middle pressure
switch OFFRefer to fig. (2) 100%
Middle pressure
switch ON100%
During acceleration: 20-69
km/h (12-43 MPH)
During deceleration: 11-64
km/h (7-40 MPH)
OFF Refer to fig. (1) 100%
ON
Middle pressure
switch OFF100%
Middle pressure
switch ON100%
During acceleration: 70-105
km/h (43-65 MPH)
During deceleration: 65-103
km/h (40-64 MPH)
OFF Refer to fig. (1) 100%
ON
Middle pressure
switch OFFRefer to fig. (2) 100%
Middle pressure
switch ONRefer to fig. (3) 100%
During acceleration: 106 km/h
(66 MPH) or more
During deceleration: 104 km/h
(65 MPH) or more
OFF Refer to fig. (1) 100%
ON
Middle pressure
switch OFFRefer to fig. (2) 100%
Middle pressure
switch ONRefer to fig. (3) 100%
(A) Fan speed (%) (B) Water temperature

(1) A/C OFF control (2) A/C ON control (A/C middle pres-
sure switch OFF)
(3) A/C ON control (A/C middle pres-
sure switch ON)
CO-02115
100
(1)
70
(A)
(B)
(2)
70
(A)
(B)
(3)
70
(A)
(B)

CO(H6DO)-5
General Description
COOLING
2. RADIATOR AND RADIATOR FAN
(1) Radiator lower cushion (11) Radiator hose B (20) Over flow hose
(2) Engine coolant drain cock (12) Radiator hose D (21) Engine coolant reservoir tank
(3) Radiator (13) Radiator sub fan
(4) Radiator upper cushion (14) Radiator fan shroudTightening torque: N·m (kgf-m, ft-lb)
(5) Radiator upper bracket (15) Radiator fan control unitT1: 3.8 (0.39, 2.8)
(6) Clamp (16) Radiator sub fan motorT2: 2.6 (0.27, 1.9)
(7) Radiator hose A (17) Radiator main fan motorT3: 6.3 (0.64, 4.6)
(8) Radiator hose B (18) Radiator main fanT4: 7.5 (0.76, 5.5)
(9) Radiator cap (19) Engine coolant reservoir tank capT5: 12 (1.2, 8.9)
(10) Radiator hose bracket
CO-02191
T4
T4
T4
T2
T1
T3
T5(7)
(6)
(13)
(18)
(14)
(16)
(17)
(15)
(21)
(19)
(20)
(9)
(10)
(6)
(11)
(6)
(1)
(3)
(2)
(12)
(6)
(8)
(4)
(5)
(6)(6)

CO(H6DO)-8
Radiator Fan System
COOLING
B: RADIATOR FAN CONTROL OUTPUT WAVEFORM
C: INSPECTION
DETECTING CONDITION:
•Engine coolant temperature is more than 95°C (203°F).
•A/C switch is turned OFF.
•Vehicle speed is below 19 km/h (12 MPH).
TROUBLE SYMPTOMS:
Radiator main fan and sub fan do not rotate under the above conditions.
(A) 5 V
Step Check Yes No
1CHECK MAIN FAN RELAY 1.
1) Turn the ignition switch to OFF.
2) Remove the main fan relay 1 from A/C relay
holder.
3) Measure the resistance of terminal in main
fan relay 1 switch.
Is the resistance more than 1
MΩ?
Go to step 2.Replace the main
fan relay 1.
2CHECK MAIN FAN RELAY 1.
1) Connect the battery to terminal of main fan
relay 1 coil.
2) Measure the resistance between terminals
of main fan relay 1 switch.
Is the resistance less than 1
Ω?
Go to step 3.Replace the main
fan relay 1.
3CHECK POWER SUPPLY FOR ECM.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from the ECM.
3) Turn the ignition switch ON.
4) Measure the voltage between ECM termi-
nal and chassis ground.
Connector & terminal
(B136) No. 29 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 4.Repair the power
supply line.
CO-02117
(V)
0
(A)