SUBARU LEGACY 1997 Service Repair Manual

OBD0489
CA: DTC P1103
—ENGINE TORQUE CONTROL SIGNAL
CIRCUIT MALFUNCTION—
WIRING DIAGRAM:
B2M0598
NOTE:
Check engine torque control signal circuit.

520
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1122
CB: DTC P1120
—STARTER SWITCH CIRCUIT HIGH INPUT
—
WIRING DIAGRAM:
B2M1153
NOTE:
Check starter switch circuit.

521
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1123
CC: DTC P1121
—NEUTRAL POSITION SWITCH CIRCUIT
LOW INPUT [AT VEHICLES]—
WIRING DIAGRAM:
B2M1116
NOTE:
Check neutral position switch circuit.

522
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1124
CD: DTC P1122
—PRESSURE SOURCES SWITCHING
SOLENOID VALVE CIRCUIT HIGH INPUT—
WIRING DIAGRAM:
B2M0786
NOTE:
Check pressure sources switching solenoid valve circuit.

523
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1126
CE: DTC P1141
—MASS AIR FLOW SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (HIGH
INPUT)—
WIRING DIAGRAM:
B2M1149
NOTE:
Check mass air flow sensor circuit.

524
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1127
CF: DTC P1142
—THROTTLE POSITION SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (LOW
INPUT)—
WIRING DIAGRAM:
B2M0540
NOTE:
Check throttle position sensor circuit.

525
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1128
CG: DTC P1143
—PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (LOW
INPUT)—
WIRING DIAGRAM:
B2M0786
NOTE:
Check pressure sensor circuit.

526
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1129
CH: DTC P1144
—PRESSURE SENSOR CIRCUIT
RANGE/PERFORMANCE PROBLEM (HIGH
INPUT)—
WIRING DIAGRAM:
B2M0786
NOTE:
Check pressure sensor circuit.

527
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1130
CI: DTC P1400
—FUEL TANK PRESSURE CONTROL
SOLENOID VALVE CIRCUIT LOW INPUT—
DTC DETECTING CONDITION:

Two consecutive driving cycles with fault
WIRING DIAGRAM:
B2M1154
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES.

528
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

H2M1408B
11CI1
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure voltage between ECM and chassis ground.
: Connector & terminal
(B84) No. 10 (+)—Chassis ground ():
Is the voltage more than 10 V?
: Go to next.
: Go to step11CI2.
: Is there poor contact in ECM connector?
: Repair poor contact in ECM connector.
: Contact with SOA service.
NOTE:
Inspection by DTM is required, because probable cause is
deterioration of multiple parts.
B2M0930A
11CI2CHECK HARNESS BETWEEN FUEL
TANK PRESSURE CONTROL SOLENOID
VALVE AND ECM CONNECTOR.
1) Turn ignition switch to OFF.
2) Disconnect connectors from fuel tank pressure control
solenoid valve and ECM.
3) Measure resistance of harness between fuel tank pres-
sure control solenoid valve connector and chassis ground.
: Connector & terminal
(R68) No. 2—Chassis ground:
Is the resistance less than 10Ω?
: Repair ground short circuit in harness between
ECM and fuel tank pressure control solenoid
valve connector.
: Go to next step 4).
529
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles