1997 SUBARU LEGACY obd

OBD0304
AM: DTC P0340
—CAMSHAFT POSITION SENSOR CIRCUIT
MALFUNCTION—
WIRING DIAGRAM:
B2M1055
NOTE:
Check camshaft position sensor circuit.

462
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

OBD0315
AO: DTC P0400
—EXHAUST GAS RECIRCULATION FLOW
MALFUNCTION—
WIRING DIAGRAM:
B2M0792
NOTE:
Check exhaust gas recirculation control system.

464
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

OBD0323
AP: DTC P0403
—EXHAUST GAS RECIRCULATION CIRCUIT
LOW INPUT—
WIRING DIAGRAM:
B2M0793
NOTE:
Check exhaust gas recirculation control solenoid valve cir-
cuit.

465
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

OBD0329
AQ: DTC P0420
—CATALYST SYSTEM EFFICIENCY BELOW
THRESHOLD—
WIRING DIAGRAM:
B2M1314
NOTE:
Check catalyst system.

466
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

OBD0331
AS: DTC P0441
—EVAPORATIVE EMISSION CONTROL
SYSTEM INCORRECT PURGE FLOW—
WIRING DIAGRAM:
B2M0795
NOTE:
Check canister purge control system.

468
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

OBD0335
AT: DTC P0443
—EVAPORATIVE EMISSION CONTROL
SYSTEM PURGE CONTROL VALVE CIRCUIT
LOW INPUT—
WIRING DIAGRAM:
B2M0795
NOTE:
Check purge control solenoid valve circuit.

469
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

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 Select Monitor or the OBD-II general
scan tool to data link connector.
5) Turn ignition switch to ON and Subaru Select Monitor or
the OBD-II general scan tool switch to ON.
H2M1326
6) Read the data on Subaru Select Monitor or the OBD-II
general scan tool.

Subaru Select Monitor
Designate mode using function key.
Function mode: F43

F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
: Is the value less than2.8 kPa in function
mode F43?
: Go to step11 AW 2.
: Even if MIL lights up, the circuit has returned to a
normal condition at this time.

OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II Gen-
eral Scan Tool Instruction Manual.
B2M0535A
11 AW 2CHECK 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 (+)—Chassis ground ():
Is the voltage more than 4.5 V?
: Go to next step 2).
: Go to next.
475
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles

B2M1016A
11AX1CONNECT 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 Select Monitor or the OBD-II general
scan tool to data link connector.
5) Turn ignition switch to ON and Subaru Select Monitor or
the OBD-II general scan tool switch to ON.
H2M1326
6) Read the data on Subaru Select Monitor or the OBD-II
general scan tool.

Subaru Select Monitor
Designate mode using function key.
Function mode: F43

F43: Display shows pressure signal value sent from fuel
tank pressure sensor.
: Is the value more than 2.8 kPa in function
mode F43?
: Go to step11AX4.
: Go to step11AX2.

OBD-II general scan tool
For detailed operation procedures, refer to the OBD-II Gen-
eral Scan Tool Instruction Manual.
B2M0535A
11AX2CHECK 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 (+)—Chassis ground ():
Is the voltage more than 4.5 V?
: Go to next step 2).
: Go to next.
480
2-7ON-BOARD DIAGNOSTICS II SYSTEM
11. Diagnostic Chart with Trouble Code for RHD Vehicles