1996 SUBARU LEGACY Service Repair Manual

Page 1769 of 2890

SUBARU LEGACY 1996  Service Repair Manual B6M0508A
2. CHECK POWER SUPPLY FOR HEADLIGHT ALARM
RELAY.
1) Remove headlight alarm relay without disconnecting
connector.
2) Measure voltage between headlight alarm relay con-
nector and body.
Connec

Page 1770 of 2890

SUBARU LEGACY 1996  Service Repair Manual 1. General
1. GENERAL DESCRIPTION
The on-board diagnostics (OBD) system detects and
indicates a fault in various inputs and outputs of the com-
plex electronic control. CHECK ENGINE malfunction indi-

Page 1771 of 2890

SUBARU LEGACY 1996  Service Repair Manual tity is determined by the duration of an electric pulse
applied to the fuel injector and this permits simple, yet
highly precise metering of the fuel.
Further, all the operating conditions of the eng

Page 1772 of 2890

SUBARU LEGACY 1996  Service Repair Manual 2. SCHEMATIC (2200 cc FWD AND TAIWAN MODELS)
B2M0709A
4
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General

Page 1773 of 2890

SUBARU LEGACY 1996  Service Repair Manual 1Engine control module (ECM)

2Ignition coil

3Ignitor

4Crankshaft position sensor

5Camshaft position sensor

6Throttle position sensor

7Fuel injectors

8Pressure regulator

9Engine coolan

Page 1774 of 2890

SUBARU LEGACY 1996  Service Repair Manual 3. SCHEMATIC (2200 cc AWD EXCEPT TAIWAN
MODEL)
B2M0914A
6
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General

Page 1775 of 2890

SUBARU LEGACY 1996  Service Repair Manual 1Engine control module (ECM)

2Ignition coil

3Ignitor

4Crankshaft position sensor

5Camshaft position sensor

6Throttle position sensor

7Fuel injectors

8Pressure regulator

9Engine coolan

Page 1776 of 2890

SUBARU LEGACY 1996  Service Repair Manual 4. SCHEMATIC (2500 cc MODEL)
B2M0710A
8
2-7ON-BOARD DIAGNOSTICS II SYSTEM
1. General