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10E1CHECK DTC P0107, P0108, P1102 OR
P1122 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0107,
P0108, P1102 OR P1122?
: Inspect DTC P0107, P0108, P1102 OR P1122
using“10. Diagnostics Chart with Trouble Code”.
NOTE:
In this case, it is not necessary to inspect DTC P0106.
: Go to step10E2.
OBD0145A
10E2
CHECK DATA FOR CONTROL.
1) Turn ignition switch to OFF.
2) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
3) Turn ignition switch ON and Subaru Select Monitor or
the OBD-II general scan tool switch ON.
4) Start engine.
B2M0756
5) Read data on Subaru Select Monitor or the OBD-II gen-
eral scan tool.
Subaru Select Monitor
Designate mode using function key.
Function mode: F21 and F20
F21: Display shows pressure signal value sent from the
pressure sensor.
F20: Display shows pressure signal value sent from the
pressure sensor.
: Is the value more than 85 kPa in function
mode F21?
: Go to step10E3.
: Go to next.
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B2M0755
: Is the value less than 32 kPa in function
mode F20?
: Go to step10E4.
: Go to next.
B2M0755
: Is the value more than 133 kPa in function
mode F20?
: Replace pressure sensor.
: Repair poor contact in pressure sensor connector,
pressure sources switching solenoid valve
connector, and ECM connector.
OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II Gen-
eral Scan Tool Instruction Manual.
B2M1063A
B2M1269A
B2M1270A
10E3
CHECK VACUUM HOSE.
: Is there a fault in vacuum hose?
NOTE:
Check the following items.
Disconnection of the vacuum hose from pressure
sources switching solenoid valve to intake manifold
Holes in the vacuum hose between pressure sources
switching solenoid valve to intake manifold
Clogging of the vacuum hose between pressure sources
switching solenoid valve to intake manifold
Disconnection of the vacuum hose from pressure sensor
to pressure sources switching solenoid valve
Holes in the vacuum hose between pressure sensor and
pressure sources switching solenoid valve
Clogging of the vacuum hose between pressure sensor
and pressure sources switching solenoid valve
Clogging of the filter
: Repair or replace hoses or filter.
: Go to step10E4.
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OBD0005B
10E4CHECK PRESSURE SOURCES SWITCH-
ING SOLENOID VALVE.
1) Turn ignition switch to OFF.
2) Connect test mode connector.
3) Turn ignition switch to ON.
: Does pressure sources switching solenoid
valve produce operating sound? (ON↔
OFF each 1.5 sec.)
NOTE:
Pressure sources switching solenoid valve operation check
can also be executed using Subaru Select Monitor (Func-
tion mode: FD10). For the procedure, refer to“COMPUL-
SORY VALVE OPERATION CHECK MODE”.
[T3F0].>
: Replace pressure sensor.
: Replace pressure sources switching solenoid
valve.
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B2M1064
F: DTC P0107
—PRESSURE SENSOR CIRCUIT LOW
INPUT—
DTC DETECTING CONDITION:
Immediately at fault recognition
WIRING DIAGRAM:
B2M1308
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
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OBD0145A
10F1CONNECT SUBARU SELECT MONITOR
OR THE OBD-II GENERAL SCAN TOOL,
AND READ DATA.
1) Turn ignition switch to OFF.
2) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
3) Turn ignition switch to ON and Subaru Select Monitor or
the OBD-II general scan tool switch to ON.
4) Start engine.
B2M0756
5) Read the data on Subaru Select Monitor or the OBD-II
general scan tool.
Subaru Select Monitor
Designate mode using function key.
Function mode: F21
F21: Display shows pressure signal value sent from
pressure sensor.
: Is the value less than 0 kPa in function
mode F21?
: Go to step10F2.
: Even if MIL lights up, the circuit has returned to a
normal condition at this time.
OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II Gen-
eral Scan Tool Instruction Manual.
B2M0535A
10F2CHECK INPUT SIGNAL FOR ECM.
(USING VOLTAGE METER AND SUBARU
SELECT MONITOR.)
1) Measure voltage between ECM connector and chassis
ground.
: Connector & terminal
(B84) No. 21 (+)—Chassis ground ( ):
Is the voltage more than 4.5 V?
: Go to next step 2).
: Go to next.
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B2M0535A
: Does the voltage change more than 4.5 V by
shaking harness and connector of ECM
while monitoring the value with voltage
meter?
: Repair poor contact in ECM connector.
: Contact with SOA service.
NOTE:
Inspection by DTM is required, because probable cause is
deterioration of multiple parts.
B2M0536A
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 26 (+)—Chassis ground ( ):
Is the voltage less than 0.2 V?
: Go to step10F3.
: Go to next step 3).
B2M0755
3) Read data on Subaru Select Monitor.
Subaru Select Monitor
Designate mode using function key.
Function mode: F20
F20: Display shows pressure signal value sent from
pressure sensor.
: Does the value change more than 0 kPa by
shaking harness and connector of ECM
while monitoring the value with Subaru
select monitor?
: Repair poor contact in ECM connector.
: Go to step10F3.
OBD0693A
10F3CHECK HARNESS BETWEEN ECM AND
PRESSURE SENSOR CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from pressure sensor.
3) Turn ignition switch to ON.
4) Measure voltage between pressure sensor connector
and engine ground.
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