1996 SUBARU LEGACY Service Repair Manual

Page 1953 of 2890

SUBARU LEGACY 1996  Service Repair Manual OBD0240
P: DTC P0170
—FUEL TRIM MALFUNCTION (FUEL)—
DTC DETECTING CONDITION:
Two consecutive trips with fault
TROUBLE SYMPTOM:
Erroneous idling
Engine stalls.
Poor driving performance
10P1Chec

Page 1954 of 2890

SUBARU LEGACY 1996  Service Repair Manual 10P1
CHECK EXHAUST SYSTEM.
: Are there holes or loose bolts on exhaust
system?
: Repair exhaust system.
: Go to step10P2.
10P2
CHECK AIR INTAKE SYSTEM.
: Are there holes, loose bolts or disconnec-
tio

Page 1955 of 2890

SUBARU LEGACY 1996  Service Repair Manual OBD0711
3) Disconnect fuel delivery hose from fuel filter, and con-
nect fuel pressure gauge.
G2M0348
4) Start the engine and idle while gear position is neutral.
5) Measure fuel pressure while discon

Page 1956 of 2890

SUBARU LEGACY 1996  Service Repair Manual OBD0145A
10P4CHECK ENGINE COOLANT TEMPERA-
TURE SENSOR.
<REF. TO 2-7 F: DTC P0115 [T10F0].>
1) Turn ignition switch to OFF.
2) Connect the Subaru Select Monitor or the OBD-II gen-
eral scan tool to da

Page 1957 of 2890

SUBARU LEGACY 1996  Service Repair Manual OBD0145A
10P5
CHECK MASS AIR FLOW SENSOR.
1) Turn ignition switch to OFF.
2) Connect the Subaru Select Monitor or the OBD-II gen-
eral scan tool to data link connector.
3) Start the engine and warm-up

Page 1958 of 2890

SUBARU LEGACY 1996  Service Repair Manual H2M1306
Q: DTC P0180
—FUEL TEMPERATURE SENSOR A CIRCUIT
MALFUNCTION (TNKT)—
DTC DETECTING CONDITION:
Immediately at fault recognition
10Q1Connect Subaru Select Monitor or the OBD-II
general scan

Page 1959 of 2890

SUBARU LEGACY 1996  Service Repair Manual WIRING DIAGRAM:
RHD Model
B2M1015
191
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

Page 1960 of 2890

SUBARU LEGACY 1996  Service Repair Manual OBD0145A
10Q1CONNECT 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