sensor SUBARU LEGACY 1996 Service Repair Manual

H2M1257B
11) Measure resistance of harness between fuel tank
pressure sensor connector and chassis ground.
: Connector & terminal
(R47) No. 1—Chassis ground:
Is the resistance more than 500 kΩ?
: Go to next.
: Repair short circuit in harness between ECM and
fuel tank pressure sensor connector.
: Is there poor contact in fuel tank pressure
sensor connector?
: Repair poor contact in fuel tank pressure sensor
connector.
: Replace fuel tank pressure sensor.
B2M0927
10AK4CHECK HARNESS BETWEEN ECM AND
FUEL TANK PRESSURE SENSOR CON-
NECTOR.
1) Turn ignition switch to OFF and Subaru Select Monitor
or the OBD-II general scan tool switch to OFF.
2) Detach right side trunk side trim panel (Sedan) or right
side rear quarter trim panel (Wagon).
3) Remove right side rear quarter trim pocket (Wagon
model only).
4) Detach right side rear quarter insulator (Wagon model
only).
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10. Diagnostics Chart with Trouble Code

H2M1326
5) Disconnect connector from fuel tank pressure sensor.
6) Remove fuel filler cap.
7) Install fuel filler cap.
8) Turn ignition switch to ON and Subaru Select Monitor or
the OBD-II general scan tool switch to ON.
9) Read data on Subaru select monitor or the OBD-II gen-
eral scan tool.

Subaru Select Monitor
Designate mode using function key.
Function mode: F43
: Is the value more than 2.8 kPa in function
mode F43?
: Repair short circuit in harness between ECM and
fuel tank pressure sensor connector.
: Replace fuel tank pressure sensor.

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

H2M1377
AL: DTC P0451
—EVAPORATIVE EMISSION CONTROL
SYSTEM PRESSURE SENSOR
RANGE/PERFORMANCE PROBLEM
(TNKP
—F)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
10AL1Check pressure/vacuum line.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:

LHD Model
B2M0926
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10. Diagnostics Chart with Trouble Code

WIRING DIAGRAM:

RHD Model
B2M1019
10AL1
CHECK PRESSURE/VACUUM LINE.
: Is there a fault in pressure/vacuum line?
NOTE:
Check the following items.

Disconnection, leakage and clogging of the vacuum
hoses and pipes between fuel tank pressure sensor and
fuel tank

Disconnection, leakage and clogging of air ventilation
hoses and pipes between fuel filler pipe and fuel tank
: Repair or replace hoses and pipes.
: Replace fuel tank pressure sensor.
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10. Diagnostics Chart with Trouble Code

OBD0340
AM: DTC P0500
—VEHICLE SPEED SENSOR MALFUNCTION
(VSP)—
DTC DETECTING CONDITION:

Immediately at fault recognition
10AM1Check speedometer operation in combination
meter.
10AM2Check harness between ECM and combination
meter connector.
10AM3Check harness between ECM and combination
meter connector.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:

LHD Model
B2M0572


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10. Diagnostics Chart with Trouble Code

WIRING DIAGRAM:

RHD Model
B2M0904
10AM1CHECK SPEEDOMETER OPERATION IN
COMBINATION METER.
: Does speedometer operate normally?
: Go to step10AM2.
: Check speedometer and vehicle speed sensor
.
B2M0573A
10AM2CHECK HARNESS BETWEEN ECM AND
COMBINATION METER CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from TCM.
3) Turn ignition switch to ON.
4) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 83 (+)—Chassis ground ():
Is the voltage more than 2 V?
: Repair harness and connector.
NOTE:
In this case, repair the following:

Open circuit in harness between ECM and combination
meter connector

Poor contact in ECM connector

Poor contact in combination meter connector

Poor contact in coupling connector (B37)
: Go to step10AM3.
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10. Diagnostics Chart with Trouble Code

B2M0656
AT: DTC P0705
—TRANSMISSION RANGE SENSOR CIRCUIT
MALFUNCTION (ATRNG)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Starter does not rotate when selector lever is in“P”or
“N”range.

Starter rotates when selector lever is in“R”,“D”,“3”,“2”
or“1”range.

Engine brake is not effected when selector lever is in“3”
range.

Shift characteristics are erroneous.
10AT1Check harness between TCM and inhibitor
switch connector.
10AT2Check inhibitor switch.
10AT3Check input signal for TCM.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.



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10. Diagnostics Chart with Trouble Code

OBD0380
AU: DTC P0710
—TRANSMISSION FLUID TEMPERATURE
SENSOR CIRCUIT MALFUNCTION (ATF)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

No shift up to 4th speed (after engine warm-up)

No lock-up (after engine warm-up)

Excessive shift shock
10AU1Check DTC P0710 on display.
Check ATF temperature sensor circuit.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:
OBD0383
10AU1
CHECK DTC P0710 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0710?
: Check ATF temperature sensor circuit.
NOTE:
For the diagnostic procedure on transmission fluid tem-
perature sensor circuit, refer to 3-2 [T7F0].

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10. Diagnostics Chart with Trouble Code

OBD0392
AV: DTC P0720
—OUTPUT SPEED SENSOR (VEHICLE
SPEED SENSOR 1) CIRCUIT MALFUNCTION
(ATVSP)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

No shift or excessive tight corner“braking”
10AV1Check DTC P0720 on display.
Check vehicle speed sensor 1 circuit.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:
B2M0584
10AV1
CHECK DTC P0720 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0720?
: Check vehicle speed sensor 1 circuit.
NOTE:
For the diagnostic procedure on vehicle speed sensor 1
circuit, refer to 3-2 [T7L0].

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10. Diagnostics Chart with Trouble Code

10BA1Check any other DTC (besides DTC P0731,
P0732, P0733, P0734) on display.
10BA2Check throttle position sensor circuit. 3-2 [T7K0].>
10BA3Check vehicle speed sensor 1 circuit. 3-2 [T7L0].>
10BA4Check vehicle speed sensor 2 circuit. 3-2 [T7M0].>
10BA5Check engine speed input circuit.

CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.





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10. Diagnostics Chart with Trouble Code