1997 SUBARU LEGACY Service Repair Manual

Page 1985 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1058
C: DTC P0102
—MASS AIR FLOW SENSOR CIRCUIT LOW
INPUT—
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Erroneous idling
Engine stalls.
Poor driving performanc

Page 1986 of 3342

SUBARU LEGACY 1997  Service Repair Manual OBD0145A
10C1CONNECT 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

Page 1987 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M0532A
10C2CHECK INPUT SIGNAL FOR ECM.
(USING VOLTAGE METER AND SUBARU
SELECT MONITOR.)
Measure voltage between ECM connector and chassis
ground while engine is idling.
: Connector & terminal
(B84)

Page 1988 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1059A
10C4CHECK HARNESS BETWEEN ECM AND
MASS AIR FLOW SENSOR CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Measure resistance of harness between ECM and
mass air f

Page 1989 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1061
D: DTC P0103
—MASS AIR FLOW SENSOR CIRCUIT HIGH
INPUT—
DTC DETECTING CONDITION:
Immediately at fault recognition
TROUBLE SYMPTOM:
Erroneous idling
Engine stalls.
Poor driving performan

Page 1990 of 3342

SUBARU LEGACY 1997  Service Repair Manual OBD0145A
10D1CONNECT 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

Page 1991 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M0481
10D2CHECK HARNESS BETWEEN ECM AND
MASS AIR FLOW SENSOR CONNECTOR.
1) Turn ignition switch to OFF and Subaru Select Monitor
or the OBD-II general scan tool switch to OFF.
2) Disconnect connecto

Page 1992 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1062
E: DTC P0106
—PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM—
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
WIRING DIAGRAM:
B2M1308
CAUTION:
After repair or replac