1996 SUBARU LEGACY Service Repair Manual

Page 2025 of 2890

SUBARU LEGACY 1996  Service Repair Manual WIRING DIAGRAM:
RHD Model
B2M1019
257
2-7ON-BOARD DIAGNOSTICS II SYSTEM
10. Diagnostics Chart with Trouble Code

Page 2026 of 2890

SUBARU LEGACY 1996  Service Repair Manual 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 Sel

Page 2027 of 2890

SUBARU LEGACY 1996  Service Repair Manual 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 (+)—Chassi

Page 2028 of 2890

SUBARU LEGACY 1996  Service Repair Manual : Does the value change more than�2.8 kPa
by shaking harness and connector of ECM
while monitoring the value with Subaru
select monitor?
: Repair poor contact in ECM connector.
: Go to step10AK3.
B2M0

Page 2029 of 2890

SUBARU LEGACY 1996  Service Repair Manual H2M1375B
8) Turn ignition switch to OFF.
9) Disconnect connector from ECM.
10) Measure resistance of harness between ECM and
pressure sensor connector.
: Connector & terminal
(B84) No. 4—(R47) No. 2

Page 2030 of 2890

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?
:

Page 2031 of 2890

SUBARU LEGACY 1996  Service Repair Manual 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 sca

Page 2032 of 2890

SUBARU LEGACY 1996  Service Repair Manual 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/vac