1997 SUBARU LEGACY Service Repair Manual

Page 2321 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1098
AU: DTC P0446
—EVAPORATIVE EMISSION CONTROL
SYSTEM VENT CONTROL LOW INPUT—
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
WIRING DIAGRAM:
B2M1155
CAUTION:
After repair

Page 2322 of 3342

SUBARU LEGACY 1997  Service Repair Manual H2M1370B
11AU1
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 35 (+)—Chassis ground (�):
Is the volt

Page 2323 of 3342

SUBARU LEGACY 1997  Service Repair Manual NOTE:
In this case, repair the following:
Open circuit in harness between ECM and vent control
solenoid valve connector
Poor contact in coupling connectors (B97 and R57)
H2M1238A
11AU3CHECK VENT CON

Page 2324 of 3342

SUBARU LEGACY 1997  Service Repair Manual H2M1377
AV: DTC P0451
—EVAPORATIVE EMISSION CONTROL
SYSTEM PRESSURE SENSOR
RANGE/PERFORMANCE PROBLEM—
WIRING DIAGRAM:
B2M1019
NOTE:
Check fuel tank pressure control system.
<Ref. to 2-7 [T10AV0].>

Page 2325 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1099
AW: DTC P0452
—EVAPORATIVE EMISSION CONTROL
SYSTEM PRESSURE SENSOR LOW INPUT
—
DTC DETECTING CONDITION:
Immediately at fault recognition
WIRING DIAGRAM:
B2M1019
CAUTION:
After repair or r

Page 2326 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1016A
11 AW 1CONNECT 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 S

Page 2327 of 3342

SUBARU LEGACY 1997  Service Repair Manual 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.
: Contact with SOA ser

Page 2328 of 3342

SUBARU LEGACY 1997  Service Repair Manual H2M1255B
5) Disconnect connector from fuel tank pressure sensor.
6) Turn ignition switch to ON.
7) Measure voltage between fuel tank pressure sensor
connector and chassis ground.
: Connector & termina