1997 SUBARU LEGACY Service Repair Manual

Page 2209 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10CG1CHECK IF THE VEHICLE IS EQUIPPED
WITH TCS.
: Is the vehicle equipped with TCS?
: Go to step10CG2.
: Go to step10CG5.
B2M0603A
10CG2
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2)

Page 2210 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M0605A
10CG4CHECK HARNESS BETWEEN ECM AND
TCS C/M CONNECTOR.
1) Turn ignition switch to OFF.
2) Remove front passenger side seat.
3) Tear off the floor mat.
4) Disconnect connectors from ECM and TCS

Page 2211 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1126
CH: DTC P1141
—MASS AIR FLOW SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (HIGH
INPUT)—
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
Erroneous idling


Page 2212 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10CH1CHECK DTC P0102 OR P0103 ON DIS-
PLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0102 or
P0103?
: Inspect DTC P0102 or P0103 using“10. Diagnos-
tics Chart with

Page 2213 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1127
CI: DTC P1142
—THROTTLE POSITION SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (LOW
INPUT)—
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
TROUBLE SYMPTOM:
Erroneous idlin

Page 2214 of 3342

SUBARU LEGACY 1997  Service Repair Manual 10CI1CHECK DTC P0122 OR P0123 ON DIS-
PLAY.
: Does the Subaru select monitor or OBD-II
general scan tool indicate DTC P0122 or
P0123?
: Inspect DTC P0122 or P0123 using“10. Diagnos-
tics Chart with

Page 2215 of 3342

SUBARU LEGACY 1997  Service Repair Manual B2M1128
CJ: DTC P1143
—PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (LOW
INPUT)—
DTC DETECTING CONDITION:
Two consecutive driving cycles with fault
WIRING DIAGRAM:
B2M1308
CAUTION:
After rep

Page 2216 of 3342

SUBARU LEGACY 1997  Service Repair Manual OBD0145A
B2M0755
10CJ1
CHECK DATA FOR CONTROL.
1) Turn ignition switch to OFF.
2) Connect Subaru Select Monitor or the OBD-II general
scan tool to data link connector.
3) Turn ignition switch ON and S