1996 SUBARU LEGACY display

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
195
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

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.
196
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

10Z1Check DTC P0100, P0101, P0115, P0125,
P0201, P0202, P0203 and P0204 on display.
10Z2Connect Subaru Select Monitor and read data.
10Z3Check air intake system.
10Z4Check misfire symptom.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:

LHD Model
B2M0558



204
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

WIRING DIAGRAM:

RHD Model
B2M0791
10Z1CHECK DTC P0100, P0101, P0115, P0125,
P0201, P0202, P0203, AND P0204 ON
DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0100,
P0101, P0115, P0125, P0201, P0202, P0203
and P0204?
: Inspect DTC P0100, P0101, P0115, P0125,
P0201, P0202, P0203 and P0204 using“10. Diag-
nostics Chart with Trouble Code 2-7 [T1000]”.
NOTE:
In this case, it is not necessary to inspect DTC P0301,
P0302, P0303 and P0304.
: Go to step10Z2.
205
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

OBD0145A
10Z2CONNECT SUBARU SELECT MONITOR
AND READ DATA.
1) Turn ignition switch to OFF.
2) Connect Subaru Select Monitor to the data link connec-
tor.
3) Turn ignition switch to ON and turn Subaru Select Moni-
tor switch to ON.
B2M0759
4) Read data on Subaru Select Monitor.
Designate mode use function key.
Function mode: F42
NOTE:
F42: Maximum and minimum EGR system pressure value
are indicated at the same time.
5) Print out the displayed data on paper.
G3M0152
6) Clear memory on Subaru Select Monitor.
Designate mode use function key.
Press [F], [C], [0], [ENT] in that order.
OBD0008C
7) Start engine, and drive the vehicle more than 10 min-
utes.
: Is the MIL coming on or blinking?
: Go to step10Z3.
: Go to next.
206
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

OBD0315
AD: DTC P0400
—EXHAUST GAS RECIRCULATION FLOW
MALFUNCTION (EGR)—
DTC DETECTING CONDITION:

Two consecutive trips with fault
TROUBLE SYMPTOM:

Poor driving performance on low engine speed
10AD1Check transmission type.
10AD2Check DTC P0105, P0106, P0403, P1102 on
display.

10AD3Check vacuum line.
10AD4Check operation of EGR system.
Confirmation of actual driving
pattern
CAUTION:
Before confirmation of actual driving pattern, conduct
CLEAR MEMORY and INSPECTION MODES.





221
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

WIRING DIAGRAM:

RHD Model
B2M0792
10AD1
CHECK TRANSMISSION TYPE.
: Is transmission type AT?
: Go to step10AD2.
: Check AT/MT identification circuit. [T10BW0].>
10AD2CHECK DTC P0105, P0106, P0403, P1102
ON DISPLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0105,
P0106, P0403 or P1102?
:
Inspect DTC P0105, P0106, P0403 or P1102
using“10. Diagnostics Chart with Trouble Code
2-7 [T1000]”.

Manually check that EGR valve diaphragm is
not stuck.
WARNING:
Be careful when checking EGR valve, since it may be
extremely hot.
NOTE:
In this case, it is not necessary to inspect DTC P0400.
After checking the above item, go to
CONFIRMATION
OF ACTUAL DRIVING PATTERN.
: Go to step10AD3.
223
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

OBD0329
AF: DTC P0420
—CATALYST SYSTEM EFFICIENCY BELOW
THRESHOLD (CAT)—
DTC DETECTING CONDITION:

Immediately at fault recognition (2200 cc all states
except California model only)

Two consecutive trips with fault
TROUBLE SYMPTOM:

Engine stalls.

Idle mixture is out of specifications.
10AF1Check any other DTC P0130, P0133, P0135,
P0136, P0139 and P0141 on display.
10AF2Check exhaust system.
10AF3Check rear catalytic converter.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

WIRING DIAGRAM:

LHD Model
B2M0762


233
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code