diagram SUBARU LEGACY 1995 Service Owner's Guide

11. REAR WIRING HARNESS AND GROUND POINT
(LHD MODEL)
OBD0734
96
2-7ON-BOARD DIAGNOSTICS II SYSTEM
6. Wiring Diagram and Wiring Harness

12. REAR WIRING HARNESS AND GROUND POINT
(RHD MODEL)
B2M0443
97
2-7ON-BOARD DIAGNOSTICS II SYSTEM
6. Wiring Diagram and Wiring Harness

13. FLOOR WIRING HARNESS, DOOR CORD AND
GROUND POINT (LHD MODEL)
OBD0735
98
2-7ON-BOARD DIAGNOSTICS II SYSTEM
6. Wiring Diagram and Wiring Harness

14. DOOR CORD AND GROUND POINT (RHD
MODEL)
B2M0444
99
2-7ON-BOARD DIAGNOSTICS II SYSTEM
6. Wiring Diagram and Wiring Harness

8. Diagnostics for CHECK ENGINE
Malfunction Indicator Lamp (MIL)
DIAGNOSIS:

The CHECK ENGINE malfunction indicator lamp (MIL)
circuit is in short or open.
TROUBLE SYMPTOM:

When ignition switch is turned to ON (engine OFF), MIL
does not illuminate.....TROUBLE SYMPTOM 1

Although MIL illuminates, trouble code is not shown on
Subaru select monitor or the OBD-II general scan tool dis-
play.....TROUBLE SYMPTOM 2
1.Classify the malfunction. Is it a TROUBLE
SYMPTOM 1 or TROUBLE SYMPTOM 2?
TROUBLE SYMPTOM 2

TROUBLE
SYMPTOM 1
2.Check output signal from ECM.
4.Check short circuit of harness.3.Check harness connector between ECM and
ignition switch.
WIRING DIAGRAM:
OBD0094

104
2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

1CLASSIFY THE MALFUNCTION. IS IT A
TROUBLE SYMPTOM 1 OR TROUBLE SYMP-
TOM 2?
If the malfunction shows TROUBLE SYMPTOM 1, go to
step 2.
If the malfunction shows TROUBLE SYMPTOM 2, go to
step 4.
OBD0095A
2
CHECK OUTPUT SIGNAL FROM ECM.
1) Turn ignition switch to ON.
2) Measure voltage between ECM and body.
: Connector & terminal
(B84) No. 31 — Body/1 V, or less
: Go to step 3.
:
If MIL comes on when shaking or pulling ECM
connector and harness, repair ECM connector.

Check that ECM connector is correctly con-
nected. If the MIL does not come on even when
ECM connector is correctly connected, replace
the ECM.
OBD0096
3CHECK HARNESS CONNECTOR BETWEEN
ECM AND IGNITION SWITCH.
Check the following and repair if necessary.

1Check that fuse (No. 15) is not blown out.
NOTE:
If replaced fuse (No. 15) blows out easily, check the har-
ness for short circuit between fuse (No. 15) and combina-
tion meter.

2Check that harness from fuse to combination meter is
not open.

3Check that the MIL wiring is not open.

4Check that harness from combination meter to the ECM
is not open.

5Check that the connector (B37) is correctly connected
as the wiring diagram shows.
105
2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)

B: STARTER MOTOR CIRCUIT
1.Check input signal for starter motor.2.Check ground circuit of starter motor.
3.Check harness connector between battery and
ignition switch.
4.

Check inhibitor switch. (AT vehicles only)

Check starter interlock circuit. (MT vehicles
only)
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>
WIRING DIAGRAM:
B2M0621


108
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. Diagnostics for Engine Starting Failure

C: CONTROL MODULE POWER SUPPLY AND
GROUND LINE
1.Check main relay.
2.Check power supply circuit of ECM.
3.Check ground circuit of ECM.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>
WIRING DIAGRAM:

LHD model
OBD0105


11 2
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. Diagnostics for Engine Starting Failure

WIRING DIAGRAM:

RHD model
B2M0445
11 3
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. Diagnostics for Engine Starting Failure

D: IGNITION CONTROL SYSTEM
1.Check ignition system for sparks.
2.Check power supply circuit for ignition coil.
3.Check ignition coil.
4.Check harness connector between ignitor and
ignition coil.
5.Check input signal for ignitor.
6.Check harness connector of ignitor ground
circuit.
7.Check harness connector between ECM and
ignitor.
CAUTION:
After repair or replacement of faulty parts, conduct
CLEAR MEMORY and INSPECTION MODES. [T3D0] and [T3E0].>
WIRING DIAGRAM:
B2M0622






11 6
2-7ON-BOARD DIAGNOSTICS II SYSTEM
9. Diagnostics for Engine Starting Failure