1996 SUBARU LEGACY display

H2M1365
AG: DTC P0440
—EVAPORATIVE EMISSION CONTROL
SYSTEM MALFUNCTION (EVAP)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Gasoline smell
10AG1Check any other DTC (besides DTC P0440) on
display.
10AG2Check fuel filler cap and fuel filler pipe.
10AG3Check vent control solenoid valve.
10AG4Check purge control solenoid valve.
10AG5Check pressure control solenoid valve.
10AG6Check evaporative emission control system
line.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.






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10. Diagnostics Chart with Trouble Code

WIRING DIAGRAM:

RHD Model
B2M1017
10AG1CHECK ANY OTHER DTC (BESIDES DTC
P0440) ON DISPLAY.
: Is there any other DTC on display?
: Inspect the relevant DTC using“10. Diagnostics
Chart with Trouble Code, 2-7 [T1000]”.
: Go to step10AG2.
10AG2CHECK FUEL FILLER CAP AND FUEL
FILLER PIPE.
1) Turn ignition switch to OFF.
2) Open the fuel flap.
: Is the fuel filler cap tightened securely?
: Tighten fuel filler cap securely.
: Go to next.
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10. Diagnostics Chart with Trouble Code

OBD0331
AH: DTC P0441
—EVAPORATIVE EMISSION CONTROL
SYSTEM INCORRECT PURGE FLOW
(CPC
—F)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
10AH1Check any other DTC P0105, P0106, P0443
and P1102 on display.
10AH2Check purge control solenoid valve operation.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:

LHD Model
B2M0569

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10. Diagnostics Chart with Trouble Code

WIRING DIAGRAM:

RHD Model
B2M0795
10AH1CHECK ANY OTHER DTC P0105, P0106,
P0443 AND P1102 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0105,
P0106, P0443, and P1102?
: Inspect the relevant DTC using“10. Diagnostics
Chart with Trouble Code 2-7 [T1000]”.
NOTE:
In this case, it is not necessary to inspect DTC P0441.
: Go to step10AH2.
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

OBD0145A
10AK1CONNECT SUBARU SELECT MONITOR
OR THE OBD-II GENERAL SCAN TOOL,
AND READ DATA.
1) Turn ignition switch to OFF.
2) Remove fuel filler cap.
3) Install fuel filler cap.
4) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
5) Turn ignition switch to ON and Subaru Select Monitor or
the OBD-II general scan tool switch to ON.
H2M1326
6) Read the data on Subaru Select Monitor or the OBD-II
general scan tool.

Subaru Select Monitor
Designate mode using function key.
Function mode: F43

F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
: Is the value less than2.8 kPa in function
mode F43?
: Go to step10AK2.
: Go to next.
H2M1326
: Is the value more than 2.8 kPa in function
mode F43?
: Go to step10AK4.
: Repair harness and connector.
NOTE:
In this case, repair the following:

Open or short circuit in harness between fuel tank pres-
sure sensor and ECM connector

Poor contact in coupling connectors (B97, and B98 (LHD
only))

Poor contact in fuel tank pressure sensor

Poor contact in 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

B2M0535A
10AK2CHECK 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.
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.
: Replace ECM.
H2M1374B
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 4 (+)—Chassis ground ():
Is the voltage less than 0.2 V?
: Go to step10AK3.
: Go to next step 3).
H2M1326
3) Read data on Subaru Select Monitor.

Subaru Select Monitor
Designate mode using function key.
Function mode: F43

F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
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10. Diagnostics Chart with Trouble Code

OBD0370
AO: DTC P0506
—IDLE CONTROL SYSTEM RPM LOWER
THAN EXPECTED (ISC
—L)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Engine is difficult to start.

Engine does not start.

Erroneous idling

Engine stalls.
10AO1Check DTC P0505 on display.
10AO2Check air intake system.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10AO1
CHECK DTC P0505 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0505?
: Inspect DTC P0505 using“10. Diagnostics Chart
with Trouble Code 2-7 [T1000]”.
NOTE:
In this case, it is not necessary to inspect DTC P0506.
: Go to step10AO2.
10AO2
CHECK AIR INTAKE SYSTEM.
1) Turn ignition switch to ON.
2) Start engine, and idle it.
: Is clogging the by-pass line between by-
pass hose and intake duct?
: Repair the by-pass line.
: Replace idle air control solenoid valve.

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2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

OBD0371
AP: DTC P0507
—IDLE CONTROL SYSTEM RPM HIGHER
THAN EXPECTED (ISC
—H)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Engine keeps running at higher revolution than specified
idling revolution.
10AP1Check DTC P0505 on display.
10AP2Check air intake system.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

10AP1
CHECK DTC P0505 ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0505?
: Inspect DTC P0505 using“10. Diagnostics Chart
with Trouble Code 2-7 [T1000]”.
NOTE:
In this case, it is not necessary to inspect DTC P0507.
: Go to step10AP2.
10AP2
CHECK AIR INTAKE SYSTEM.
1) Turn ignition switch to ON.
2) Start engine, and idle it.
: Is there a fault in air intake system?
NOTE:
Check the following items.

Loose installation of intake manifold, idle air control sole-
noid valve and throttle body

Cracks of intake manifold gasket, idle air control sole-
noid valve gasket and throttle body gasket

Loose connections and cracks of idle air control solenoid
valve by-pass hoses

Disconnections of vacuum hoses
: Repair air suction and leaks.
: Replace idle air control solenoid valve.

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10. Diagnostics Chart with Trouble Code