2009 SUBARU TRIBECA check engine light

EN(H6DO)(diag)-247
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
12 CHECK FUEL LEVEL.Is the fuel meter indication
lower than the “Lower” level?
Replenish fuel so
that fuel meter
indication is higher
than the “Lower”
level. After replen-
ishing fuel, Go to
step 13.
Go to step 13.
13 CHECK STATUS OF MALFUNCTION INDI-
CATOR LIGHT.
1) Clear the memory using the Subaru Select
Monitor or the general scan tool.
NOTE:•Subaru Select Monitor
Monitor.>
•General scan tool
Refer to operating manuals for the general
scan tool.
2) Start the engine, and drive the vehicle more
than 10 minutes.
Does the malfunction indicator
light illuminate or blink?
Go to step 15.Go to step 14.
14 CHECK CAUSE OF MISFIRE.Has the cause of misfire been
detected while running the
engine?
Finish diagnostics
operation, if the
engine has no
abnormality.
Repair the poor
contact.
NOTE:In this case, repair
the following item:
•Poor contact
of ignition coil
connector
•Poor contact
of fuel injector
connector on
faulty cylinders
•Poor contact
in ECM connec-
tor
•Poor contact
of coupling con-
nector
15 CHECK AIR INTAKE SYSTEM.Is there any fault in air intake
system?
Repair the air
intake system.
NOTE:
Check the follow-
ing item.
•Are there air
leaks or air suc-
tion caused by
loose or dislo-
cated nuts and
bolts?
•Are there
cracks or any
disconnection
of hoses?
Go to step 16.
16 CHECK MISFIRE SYMPTOM.
1) Turn the ignition switch to ON.
2) Read DTC.
Tr o u b l e C o d e ( D T C ) . >
Does the Subaru Select Moni-
tor or general scan tool indi-
cate only one DTC?
Go to step 22.Go to step 17.
17 CHECK ANY OTHER DTC ON DISPLAY.Are DTC P0301 and P0302
displayed?
Go to step 23.Go to step 18.
Step Check Yes No

EN(H6DO)(diag)-254
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS BETWEEN KNOCK SEN-
SOR AND ECM CONNECTOR.
Measure the resistance of harness between
ECM connector and chassis ground.
Connector & terminal
(B134) No. 15 — Chassis ground:
Is the resistance less than 400
kΩ?
Go to step 2.Go to step 3.
2CHECK KNOCK SENSOR.
1) Disconnect the connector from knock sen-
sor.
2) Measure the resistance between knock
sensor connector terminal and engine ground.
Te r m i n a l s
No. 2 — Engine ground:
Is the resistance less than 400
kΩ?
Replace the knock
sensor. FU(H6DO)-20,
Knock Sensor.>
Repair the ground
short circuit of har-
ness between
knock sensor con-
nector and ECM
connector.
NOTE:
The harness be-
tween both con-
nectors are
shielded. Repair
the short circuit of
harness covered
with shield.
3CHECK INPUT SIGNAL OF ECM.
1) Connect the connectors to ECM and knock
sensor.
2) Turn the ignition switch to ON.
3) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B134) No. 15 (+) — Chassis ground (–):
Is the voltage more than 2 V? Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.(However,
the possibility of
poor contact still
remains.)
NOTE:In this case, repair
the following item:
•Poor contact
of knock sensor
connector
•Poor contact
in ECM connec-
tor
•Poor contact
of coupling con-
nector
Repair poor con-
tact in ECM con-
nector.

EN(H6DO)(diag)-258
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK HARNESS BETWEEN KNOCK SEN-
SOR AND ECM CONNECTOR.
Measure the resistance of harness between
ECM connector and chassis ground.
Connector & terminal
(B134) No. 16 — Chassis ground:
Is the resistance less than 400
kΩ?
Go to step 2.Go to step 3.
2CHECK KNOCK SENSOR.
1) Disconnect the connector from knock sen-
sor.
2) Measure the resistance between knock
sensor connector terminal and engine ground.
Te r m i n a l s
No. 2 — Engine ground:
Is the resistance less than 400
kΩ?
Replace the knock
sensor. FU(H6DO)-20,
Knock Sensor.>
Repair the ground
short circuit of har-
ness between
knock sensor con-
nector and ECM
connector.
NOTE:
The harness be-
tween both con-
nectors are
shielded. Repair
the short circuit of
harness covered
with shield.
3CHECK INPUT SIGNAL OF ECM.
1) Connect the connectors to ECM and knock
sensor.
2) Turn the ignition switch to ON.
3) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B134) No. 16 (+) — Chassis ground (–):
Is the voltage more than 2 V? Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time. (How-
ever, the possibility
of poor contact still
remains.)
NOTE:In this case, repair
the following item:
•Poor contact
of knock sensor
connector
•Poor contact
in ECM connec-
tor
•Poor contact
of coupling con-
nector
Repair poor con-
tact in ECM con-
nector.

EN(H6DO)(diag)-273
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK OUTPUT SIGNAL OF ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B136) No. 17 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 2.Go to step 3.
2CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time. (How-
ever, the possibility
of poor contact still
remains.)
NOTE:In this case, repair
the following item:
•Poor contact
in drain valve
connector
•Poor contact
in ECM connec-
tor
•Poor contact
of coupling con-
nector
3CHECK HARNESS BETWEEN DRAIN
VALVE AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from drain valve
and ECM.
3) Measure the resistance of harness
between drain valve connector and chassis
ground.
Connector & terminal
(R143) No. 2 — Chassis ground:
Is the resistance more than 1
MΩ?
Go to step 4.Repair ground
short circuit of har-
ness between
ECM and drain
valve connector.
4CHECK HARNESS BETWEEN DRAIN
VALVE AND ECM CONNECTOR.
Measure the resistance of harness between
ECM and drain valve connector.
Connector & terminal
(B136) No. 17 — (R143) No. 2:
Is the resistance less than 1
Ω?
Go to step 5.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween ECM and
drain valve con-
nector
•Poor contact
of coupling con-
nector
5CHECK DRAIN VALVE.
Measure the resistance between drain valve
terminals.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance between 10
— 100 Ω?
Go to step 6.Replace the drain
valve. EC(H6DO)-12,
Drain Valve.>

EN(H6DO)(diag)-276
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK INPUT SIGNAL OF ECM.
1) Turn the ignition switch to OFF.
2) Connect the test mode connector at the
lower portion of instrument panel (on the
driver’s side).
3) Turn the ignition switch to ON.
4) While operating the drain valve, measure
voltage between ECM and chassis ground.
NOTE:
Drain valve operation can also be executed us-
ing Subaru Select Monitor. Refer to “Compulso-
ry Valve Operation Check Mode” for
procedures. Compulsory Valve Operation Check Mode.>
Connector & terminal
(B136) No. 17 (+) — Chassis ground (–):
Is the voltage 0 — 10 V? Go to step 2.Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time. In this
case, repair the
poor contact in
ECM connector.
2CHECK INPUT SIGNAL OF ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B136) No. 17 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 4.Go to step 3.
3CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
4CHECK HARNESS BETWEEN DRAIN
VALVE AND ECM CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from the drain
valve.
3) Turn the ignition switch to ON.
4) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B136) No. 17 (+) — Chassis ground (–):
Is the voltage more than 10 V? Repair battery
short circuit of har-
ness between
ECM and drain
valve connector.
After repair,
replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Go to step 5.
5CHECK DRAIN VALVE.
1) Turn the ignition switch to OFF.
2) Measure the resistance between drain
valve terminals.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance less than 1
Ω?
Replace the drain
valve EC(H6DO)-12,
Drain Valve.> and
ECM FU(H6DO)-32,
Engine Control
Module (ECM).>.
Go to step 6.
6CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>

EN(H6DO)(diag)-280
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK CURRENT DATA.
1) Turn the ignition switch to OFF.
2) Remove the fuel filler cap.
3) Install the fuel filler cap.
4) Turn the ignition switch to ON.
5) Read the data of fuel tank pressure sensor
signal using Subaru Select Monitor.
NOTE:•Subaru Select Monitor
For detailed operation procedures, refer to
“READ CURRENT DATA FOR ENGINE”. to EN(H6DO)(diag)-26, Subaru Select Moni-
tor.>
Is the measured value less
than –2.8 kPa (–21.0 mmHg, –
0.827 inHg)?
Go to step 2.Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.
2CHECK POWER SUPPLY TO FUEL TANK
PRESSURE SENSOR.
Measure the voltage between ECM connector
and chassis ground.
Connector & terminal
(B135) No. 22 (+) — Chassis ground (–):
Is the voltage more than 4.5 V? Go to step 4.Go to step 3.
3CHECK POWER SUPPLY TO FUEL TANK
PRESSURE SENSOR.
Measure the voltage between ECM connector
and chassis ground.
Connector & terminal
(B135) No. 22 (+) — Chassis ground (–):
Does the voltage change by
shaking the ECM harness and
connector?
Repair poor con-
tact in ECM con-
nector.
Contact with SOA
Service Center.
4CHECK INPUT SIGNAL OF ECM.
Measure the voltage between ECM and chas-
sis ground.
Connector & terminal
(B135) No. 32 (+) — Chassis ground (–):
Is the voltage less than 0.2 V? Go to step 6.Go to step 5.
5CHECK INPUT SIGNAL FOR ECM (USING
SUBARU SELECT MONITOR).
Read the data of fuel tank pressure sensor sig-
nal using Subaru Select Monitor.
NOTE:
•Subaru Select Monitor
For detailed operation procedure, refer to
“READ CURRENT DATA FOR ENGINE”. to EN(H6DO)(diag)-26, Subaru Select Moni-
tor.>
Does the measured value
change by shaking ECM har-
ness and connector?
Repair poor con-
tact in ECM con-
nector.
Go to step 6.
6CHECK HARNESS BETWEEN ECM AND
COUPLING CONNECTOR IN REAR WIRING
HARNESS.
1) Turn the ignition switch to OFF.
2) Remove the rear seat cushion.
3) Separate rear wiring harness and fuel tank
cord.
4) Turn the ignition switch to ON.
5) Measure the voltage between rear wiring
harness connector and chassis ground.
Connector & terminal
(R15) No. 11 (+) — Chassis ground (–):
Is the voltage more than 4.5 V? Go to step 7.Repair the har-
ness and connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween ECM and
rear wiring har-
ness connector
•Poor contact
of coupling con-
nector

EN(H6DO)(diag)-290
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK OUTPUT SIGNAL OF ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B137) No. 29 (+) — Chassis ground (–):
Is the voltage more than 10 V? Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.
Go to step 2.
2CHECK HARNESS BETWEEN PURGE CON-
TROL SOLENOID VALVE AND ECM CON-
NECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from purge con-
trol solenoid valve and ECM.
3) Measure the resistance of harness
between purge control solenoid valve connec-
tor and engine ground.
Connector & terminal
(E4) No. 2 — Engine ground:
Is the resistance more than 1
MΩ?
Go to step 3.Repair the ground
short circuit of har-
ness between
ECM and purge
control solenoid
valve connector.
3CHECK HARNESS BETWEEN PURGE CON-
TROL SOLENOID VALVE AND ECM CON-
NECTOR.
Measure the resistance of harness between
ECM and purge control solenoid valve.
Connector & terminal
(B137) No. 29 — (E4) No. 2:
Is the resistance less than 1
Ω?
Go to step 4.Repair the open
circuit of harness
between ECM and
purge control sole-
noid valve connec-
tor.
NOTE:In this case, repair
the following item:
•Open circuit
of harness be-
tween ECM and
purge control
solenoid valve
connector
•Poor contact
of coupling con-
nector
4CHECK PURGE CONTROL SOLENOID
VALVE.
1) Remove the purge control solenoid valve.
2) Measure the resistance between purge
control solenoid valve terminals.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance between 10
— 100 Ω?
Go to step 5.Replace the purge
control solenoid
valve. EC(H6DO)-6,
Purge Control
Solenoid Valve.>
5CHECK POWER SUPPLY TO PURGE CON-
TROL SOLENOID VALVE.
1) Turn the ignition switch to ON.
2) Measure the voltage between purge control
solenoid valve and engine ground.
Connector & terminal
(E4) No. 1 (+) — Engine ground (–):
Is the voltage more than 10 V? Go to step 6.Repair the open
circuit of harness
between main
relay and purge
control solenoid
valve connector.
6CHECK POOR CONTACT.
Check poor contact of purge control solenoid
valve connector.
Is there poor contact of purge
control solenoid valve connec-
tor?
Repair the poor
contact of purge
control solenoid
valve connector.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>

EN(H6DO)(diag)-292
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step Check Yes No
1CHECK OUTPUT SIGNAL OF ECM.
1) Turn the ignition switch to OFF.
2) Connect the test mode connector at the
lower portion of instrument panel (on the
driver’s side).
3) Turn the ignition switch to ON.
4) Measure the voltage between ECM and
chassis ground while operating the purge con-
trol solenoid valve.
NOTE:Purge control solenoid valve operation can be
executed using Subaru Select Monitor. Refer to
“Compulsory Valve Operation Check Mode” for
procedures. Compulsory Valve Operation Check Mode.>
Connector & terminal
(B137) No. 29 (+) — Chassis ground (–):
Is the voltage 0 — 10 V? Go to step 2.Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time. In this
case, repair the
poor contact in
ECM connector.
2CHECK OUTPUT SIGNAL OF ECM.
1) Turn the ignition switch to ON.
2) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B137) No. 29 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step 4.Go to step 3.
3CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
4CHECK HARNESS BETWEEN PURGE CON-
TROL SOLENOID VALVE AND ECM CON-
NECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from purge con-
trol solenoid valve.
3) Turn the ignition switch to ON.
4) Measure the voltage between ECM and
chassis ground.
Connector & terminal
(B137) No. 29 (+) — Chassis ground (–):
Is the voltage more than 10 V? Repair the battery
short circuit of har-
ness between
ECM and purge
control solenoid
valve connector.
After repair,
replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>
Go to step 5.
5CHECK PURGE CONTROL SOLENOID
VALVE.
1) Turn the ignition switch to OFF.
2) Measure the resistance between purge
control solenoid valve terminals.
Te r m i n a l s
No. 1 — No. 2:
Is the resistance less than 1
Ω?
Replace the purge
control solenoid
valve EC(H6DO)-6,
Purge Control
Solenoid Valve.>
and ECM. FU(H6DO)-32,
Engine Control
Module (ECM).>
Go to step 6.
6CHECK POOR CONTACT.
Check poor contact of ECM connector.
Is there poor contact in ECM
connector?
Repair poor con-
tact in ECM con-
nector.
Replace the ECM.
FU(H6DO)-32,
Engine Control
Module (ECM).>