SUBARU LEGACY 1996 Service Repair Manual

2. SCHEMATIC
B2M0469A
13
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General

2. Electrical Components Location
A: ENGINE
1. MODULE
OBD0003A
1Engine control module (ECM)

2Data link connector (for Subaru select monitor only)

3Data link connector (for Subaru select monitor and OBD-II
general scan tool)
4Test mode connector

5CHECK ENGINE malfunction indicator lamp (MIL)
OBD0004AOBD0005D
OBD0006BB2M0470A
14
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

2. SENSOR
OBD0009A
1Pressure sensor

2Mass air flow sensor

3Engine coolant temperature sensor

4Throttle position sensor
5Knock sensor

6Camshaft position sensor

7Crankshaft position sensor
B2M0776AOBD0011A
15
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

OBD0012AOBD0013A
OBD0014AOBD0015A
B2M0213B
16
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

B2M0471A
B2M0472A
8Front oxygen sensor

9Rear oxygen sensor (Except 2200 cc California model)

10Rear oxygen sensor (2200 cc California model)
11Front catalytic converter

12Rear catalytic converter
OBD0018AOBD0019B
17
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

B2M0473AOBD0524C
OBD0525C
18
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

OBD0003C
1Fuel level sensor

2Fuel temperature sensor
3Fuel tank pressure sensor

4Fuel sub level sensor
B2M0921AB2M0922A
B2M0946A
19
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

3. SOLENOID VALVE, EMISSION CONTROL SYSTEM
PARTS AND IGNITION SYSTEM PARTS
OBD0009B
1Pressure sources switching solenoid valve

2Idle air control solenoid valve

3EGR valve (AT vehicles only)

4EGR control solenoid valve (AT vehicles only)
5Purge control solenoid valve

6Ignitor

7Ignition coil
B2M0777AOBD0022A
20
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

B2M0670AOBD0024A
OBD0025AOBD0026A
B6M0160A
21
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location

OBD0003D
8Pressure control solenoid valve (2200 cc AWD except
Taiwan model)

9Vent control solenoid valve (2200 cc except AWD Taiwan
model)
10Canister (2200 cc AWD except Taiwan model)
B2M0923AB2M0924A
22
2-7ON-BOARD DIAGNOSTICS II SYSTEM
2. Electrical Components Location