Page 1961 of 2890
G2M0340
10Q2CHECK HARNESS BETWEEN FUEL TEM-
PERATURE SENSOR AND ECM CON-
NECTOR.
1) Turn ignition switch to OFF.
2) Remove access hole lid.
3) Disconnect connector from fuel pump.
OBD0145A
4) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
5) Turn ignition switch and Subaru Select Monitor or
OBD-II general scan tool switch to ON.
H2M1308
6) Read data on Subaru Select Monitor or the OBD-II gen-
eral scan tool.
Subaru Select Monitor
Designate mode using function key.
Function mode: F44
F44: Fuel temperature is indicated in“°C”and“°F”.
: Is the value less than 40°Cor 40°Fin
function mode F44?
: Replace fuel temperature sensor.
: Repair short circuit in harness between fuel pump
and ECM connector.
OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II Gen-
eral Scan Tool Instruction Manual.
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10. Diagnostics Chart with Trouble Code
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G2M0340
10Q3CHECK HARNESS BETWEEN FUEL TEM-
PERATURE SENSOR AND ECM CON-
NECTOR.
1) Turn ignition switch to OFF.
2) Remove access hole lid.
3) Disconnect connector from fuel pump.
4) Turn ignition switch to ON.
B2M0917A
5) Measure voltage between fuel pump connector and
chassis ground.
: Connector & terminal
(R58) No. 6 (+)—Chassis ground ( ):
Is the voltage more than 4 V?
: Go to next step 6).
: Repair harness and connector.
NOTE:
In this case, repair the following:
Open circuit in harness between ECM and fuel pump
connector
Poor contact in fuel pump connector
Poor contact in ECM connector
Poor contact in coupling connectors (B98 (LHD)/B97
(RHD), and R57)
B2M0918A
6) Turn ignition switch to OFF.
7) Measure resistance of harness between fuel pump con-
nector and chassis ground.
: Connector & terminal
(R58) No. 5—Chassis ground:
Is the resistance less than 5Ω?
: Replace fuel temperature sensor.
: Repair harness and connector.
NOTE:
In this case, repair the following:
Open circuit in harness between ECM and fuel pump
connector
Poor contact in fuel pump connector
Poor contact in ECM connector
Poor contact in coupling connectors (B22, B98 (LHD)/
B97 (RHD), and R57)
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10. Diagnostics Chart with Trouble Code
Page 1963 of 2890
H2M1350
R: DTC P0181
—FUEL TEMPERATURE SENSOR A CIRCUIT
RANGE/PERFORMANCE PROBLEM
(TNKT
—F)—
DTC DETECTING CONDITION:
Two consecutive trips with fault
10R1Check DTC P0180 on display.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
WIRING DIAGRAM:
LHD Model
B2M0916
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10. Diagnostics Chart with Trouble Code
Page 1964 of 2890
WIRING DIAGRAM:
RHD Model
B2M1015
10R1
CHECK DTC P0180 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0180?
: Inspect DTC P0180 using“10. Diagnostics Chart
with Trouble Code 2-7 [T1000]”.
NOTE:
In this case, it is not necessary to inspect DTC P0181.
: Replace fuel temperature sensor.
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10. Diagnostics Chart with Trouble Code
Page 1965 of 2890
OBD0261
S: DTC P0201
—FUEL INJECTOR CIRCUIT MALFUNCTION -
#1 (INJ1)—
OBD0262
T: DTC P0202
—FUEL INJECTOR CIRCUIT MALFUNCTION -
#2 (INJ2)—
OBD0263
U: DTC P0203
—FUEL INJECTOR CIRCUIT MALFUNCTION -
#3 (INJ3)—
OBD0264
V: DTC P0204
—FUEL INJECTOR CIRCUIT MALFUNCTION -
#4 (INJ4)—
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Failure of engine to start
Engine stalls.
Erroneous idling
Rough driving
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10. Diagnostics Chart with Trouble Code
Page 1966 of 2890
10V1Check output signal from ECM.
10V2Check harness between fuel injector and ECM
connector.
10V3Check harness between fuel injector and ECM
connector.
10V4Check fuel injector.
10V5Check power supply line.
CAUTION:
Check or repair only faulty cylinders.
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.
WIRING DIAGRAM:
LHD Model
B2M0555
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10. Diagnostics Chart with Trouble Code
Page 1967 of 2890
WIRING DIAGRAM:
RHD Model
B2M0784
199
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10. Diagnostics Chart with Trouble Code
Page 1968 of 2890

B2M0556A
10V1
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure voltage between ECM connector and chassis
ground on faulty cylinders.
: Connector & terminal
#1 (B84) No. 96 (+)—Chassis ground ( ):
#2 (B84) No. 70 (+)—Chassis ground ( ):
#3 (B84) No. 44 (+)—Chassis ground ( ):
#4 (B84) No. 16 (+)—Chassis ground ( ):
Is the voltage more than 10 V?
: Go to step10V2.
: Go to step10V3.
B2M0556A
10V2CHECK HARNESS BETWEEN FUEL
INJECTOR AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from fuel injector on faulty cylin-
der.
3) Turn ignition switch to ON.
4) Measure voltage between ECM connector and chassis
ground on faulty cylinders.
: Connector & terminal
#1 (B84) No. 96 (+)—Chassis ground ( ):
#2 (B84) No. 70 (+)—Chassis ground ( ):
#3 (B84) No. 44 (+)—Chassis ground ( ):
#4 (B84) No. 16 (+)—Chassis ground ( ):
Is the voltage more than 10 V?
: Repair short circuit in harness between ECM and
fuel injector. After repair, replace ECM.
: Go to next step 5).
G2M0464
5) Turn ignition switch to OFF.
6) Measure resistance between fuel injector terminals on
faulty cylinder.
: Terminals
No. 1—No.2:
Is the resistance less than 1Ω?
: Replace faulty fuel injector and ECM.
: Go to next.
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10. Diagnostics Chart with Trouble Code