O2 sensor SUBARU LEGACY 1999 Service Repair Manual
[x] Cancel search | Manufacturer: SUBARU, Model Year: 1999, Model line: LEGACY, Model: SUBARU LEGACY 1999Pages: 1456, PDF Size: 59.93 MB
Page 1274 of 1456
4) Turn ignition switch OFF with main switch ON
(which is indicated by illumination.).
5) Turn ignition switch ON again to ensure that
indicator light remains OFF.
2. COMMAND SWITCH
1) Check that command switch is properly set in
ªSET/COASTº, ªRESUME/ACCELº or ªCANCELº
mode.
2) Also check that command switch returns to the
original position when released.
3. CONSTANT SPEED TEST
1) Turn main switch ON.
2) Drive vehicle at speed greater than 40 km/h (25
MPH).
3) Press command switch to set in ªSET/COASTº
mode.
4) Ensure that vehicle is maintained at the speed
set when command switch was pressed.
4. ACCELERATION TEST
1) Set vehicle speed at speed greater than 40
km/h (25 MPH).
2) Ensure that vehicle continues to accelerate
while holding command switch in RESUME/
ACCEL mode, and that vehicle maintains that
optional speed when command switch is released.
5. DECELERATION TEST
1) Set vehicle speed at optional speed greater
than 40 km/h (25 MPH).
2) Ensure that vehicle continues to decelerate
while holding command switch in SET/COAST
mode, and that it maintains that optional speed
when command switch is released.
NOTE:
When vehicle speed reaches the lower speed limit
of 30 km/h (19 MPH) during deceleration, cruise
control will be released.
23. Security System
A: REMOVAL AND INSTALLATION
1. SECURITY CONTROL MODULE
1) Disconnect battery ground cable.
2) Remove radio.
3) Disconnect connector from security control
module and then remove security control module.
B6M0942
4) Installation is in the reverse order of removal.
NOTE:
ITo install the security control module, tighten
screws securely so that the screws do not come
loose.
IWhen installing a non-genuine radio, make sure
that the radio harness does not touch the security
control module.
B: INSPECTION
1. IMPACT SENSOR
Perform impact sensitivity test.
44
6-2[W22C2]SERVICE PROCEDURE
23. Security System
Page 1275 of 1456
4) Turn ignition switch OFF with main switch ON
(which is indicated by illumination.).
5) Turn ignition switch ON again to ensure that
indicator light remains OFF.
2. COMMAND SWITCH
1) Check that command switch is properly set in
ªSET/COASTº, ªRESUME/ACCELº or ªCANCELº
mode.
2) Also check that command switch returns to the
original position when released.
3. CONSTANT SPEED TEST
1) Turn main switch ON.
2) Drive vehicle at speed greater than 40 km/h (25
MPH).
3) Press command switch to set in ªSET/COASTº
mode.
4) Ensure that vehicle is maintained at the speed
set when command switch was pressed.
4. ACCELERATION TEST
1) Set vehicle speed at speed greater than 40
km/h (25 MPH).
2) Ensure that vehicle continues to accelerate
while holding command switch in RESUME/
ACCEL mode, and that vehicle maintains that
optional speed when command switch is released.
5. DECELERATION TEST
1) Set vehicle speed at optional speed greater
than 40 km/h (25 MPH).
2) Ensure that vehicle continues to decelerate
while holding command switch in SET/COAST
mode, and that it maintains that optional speed
when command switch is released.
NOTE:
When vehicle speed reaches the lower speed limit
of 30 km/h (19 MPH) during deceleration, cruise
control will be released.
23. Security System
A: REMOVAL AND INSTALLATION
1. SECURITY CONTROL MODULE
1) Disconnect battery ground cable.
2) Remove radio.
3) Disconnect connector from security control
module and then remove security control module.
B6M0942
4) Installation is in the reverse order of removal.
NOTE:
ITo install the security control module, tighten
screws securely so that the screws do not come
loose.
IWhen installing a non-genuine radio, make sure
that the radio harness does not touch the security
control module.
B: INSPECTION
1. IMPACT SENSOR
Perform impact sensitivity test.
44
6-2[W22C2]SERVICE PROCEDURE
23. Security System
Page 1289 of 1456
5) Some connectors are provided with a lock. One
type of such a connector is disconnected by push-
ing the lock, and the other, by moving the lock up.
In either type the lock shape must be identified
before attempting to disconnect the connector.
To connect, insert the connector until it snaps and
confirm that it is tightly connected.
G6M0213
6) When checking continuity between connector
terminals, or measuring voltage across the termi-
nal and ground, always contact tester probe(s) on
terminals from the wiring connection side. If the
probe is too thick to gain access to the terminal,
use ªminiº test leads.
To check water-proof connectors (which are not
accessible from the wiring side), contact test
probes on the terminal side being careful not to
bend or damage the terminals.
G6M0214
7) Sensors, relays, electrical unit, etc., are sensi-
tive to strong impacts.
Handle them with care so that they are not dropped
or mishandled.
9
[D3B0]6-3WIRING DIAGRAM
3. Working Precautions
Page 1296 of 1456
No. Load
MB-1Fuse holder (Rear power supply & seat
heater)
MB-2 Power window circuit breaker
MB-3Data link connector
Engine control module
Fuel pump relay
Main relay
MB-4 A/C relay holder
MB-6 Headlight LH
MB-7Daytime running light control module
Diode (Lighting)
Diode (Security)
Lighting switch
MB-8Combination meter
Front fog light switch
Headlight RH
Front fog light relay
MB-9Door lock timer
Headlight alarm relay
Radio
Security control module
Security indicator light
Spot light
Room light
Step light
Combination meter
Luggage room light
Trailer connector
Trunk room light
MB-10 A/C relay holder
SBF-6ABS relay box
TCS motor relay
SBF-7 TCS valve relay
ALT-1Combination meter
Daytime running light control module
Diode (TCS)
IG Headlight alarm relay
STCruise control module
Engine control module
Inhibitor switch (AT)
Interrupt relay (with security)
Starter interlock relay (MT)
FB-1Front washer motor
Rear washer motor
FB-2Engine control module
Main fan relay 1
FB-3Sub fan relay 2
Sub fan motor
FB-4Engine control module
Fuel pump relay
Ignition coil
Transmission control module
FB-5 ABS relay box
FB-6Side marker light LH
Side marker light RH
FB-7Door lock timer
Keyless entry control moduleNo. Load
FB-8 Wiper deicer relay
FB-9 Hazard switch
FB-10AT shift lock control module
Key warning switch
Power antenna
FB-11 Radio
FB-12 Front accessory power supply
FB-13Mirror heater
Rear power supply relay
Remote control rearview mirror switch
Security control module
Vanity mirror illumination light
FB-14AT shift lock control module
Combination switch
Front wiper motor
Rear wiper motor
Rear wiper relay
FB-15ABS/TCS control module
Transmission control module
FB-16Rear defogger
Rear defogger condenser
Rear defogger switch
FB-17 Rear defogger timer
FB-18AT shift lock control module
Back-up light switch (MT)
Inhibitor switch (AT)
FB-19 Hazard switch
FB-20A/C switch
Combination meter
Mode control panel
Rear defogger timer
TCS off switch
FB-22Blower motor relay
Check connector
Daytime running light control module
Daytime running light relay
FRESH/RECIRC actuator
Hi-beam relay
Keyless entry control module
Power window and sunroof relay
Seat belt timer
Security control module
Vehicle speed sensor (MT)
Wiper deicer relay
Wiper deicer timer
FB-23 Airbag control module
FB-24 Airbag control module
FB-25 Lighting switch
FB-26Keyless entry control module
Parking switch
FB-27Keyless entry control module
Parking switch
Security control module
FB-28 Illumination light
FB-29 Illumination light
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6-3[D6A1]WIRING DIAGRAM
6. Wiring Diagram
Page 1413 of 1456
![SUBARU LEGACY 1999 Service Repair Manual 7. Electrical Unit Location
A: LIST
Electrical unit Index No.
ABS control module <Ref. to 4-4 [T300].>
ABS G sensor (MT) <Ref. to 4-4 [T300].>
A/C compressor relay <Ref. to 6-3 [D7B1].>
A/C fuse <Ref.](/img/17/57435/w960_57435-1412.png "SUBARU LEGACY 1999 Service Repair Manual 7. Electrical Unit Location
A: LIST
Electrical unit Index No.
ABS control module <Ref. to 4-4 [T300].>
ABS G sensor (MT) <Ref. to 4-4 [T300].>
A/C compressor relay <Ref. to 6-3 [D7B1].>
A/C fuse <Ref.")
7. Electrical Unit Location
A: LIST
Electrical unit Index No.
ABS control module
ABS G sensor (MT)
A/C compressor relay
A/C fuse
A/C main fan relay 1
A/C main fan relay 2
A/C pressure switch
A/C sub fan relay 2
ATF temperature sensor
Blower motor resistor
Blower relay
Camshaft position sensor
Check connector
Clutch switch (MT)
Crankshaft position sensor
Cruise control module
Cruise control pump
Data link connector (for
OBD-II G.S.T.)
Data link connector (for
S.S.M.)
Diagnosis connector
Diagnosis terminal (Ground)
Door lock timer
Engine control module
Engine coolant temperature
sensor
Engine hood switch (Secu-
rity)
Evaporator thermoswitch
F/B
FRESH/RECIRC actuator
Fuel pump relay
Fuel gauge module
Fuel gauge sub module
(AWD)
FWD switch (AT)
Headlight alarm relay
(Security)
Headlight relay LH
Electrical unit Index No.
Headlight relay RH
Horn relay
Hydraulic unit (ABS)
Ignition coil
Ignitor
Idle air control solenoid
valve
Illumination control module
Inhibitor switch
Knock sensor
Main fan relay
Main relay
Mass air flow sensor
Mode actuator
M/B
Oil pressure switch
Oxygen sensor
Pedal stroke sensor (TCS)
Power window and sunroof
relay
Power window circuit
breaker
Purge control solenoid valve
Rear defogger relay
Seat belt timer
Security control module
Shift lock control module
Starter interrupt relay (Secu-
rity)
Stop & brake switch (With
cruise control)
Sunroof control module
Tail and illumination relay
TCS control module
TCS motor relay
TCS valve relay
Throttle position sensor
Test mode connector
Transmission control mod-
ule
Turn & hazard module
Vehicle speed sensor 1
Vehicle speed sensor 2
133
[D7A0]6-3WIRING DIAGRAM
7. Electrical Unit Location
Page 1420 of 1456
8. Electrical Wiring Harness and Ground Point
A: OVERALL LOCATION
1. LHD MODEL
B6M0267B
(1) Front wiring harness
(2) Engine wiring harness
(3) Room light cord
(4) Bulkhead wiring harness
(5) Instrument panel wiring harness
(6) Front door cord RH
(7) Rear door cord RH(8) Rear wiring harness
(9) Trunk lid cord (Sedan)
(10) Rear defogger ground cord
(Sedan)
(11) Fuel tank cord
(12) Rear door cord LH
(13) Front door cord LH(14) Sunroof cord
(15) Floor wiring harness
(16) Transmission cord
(17) Rear gate cord (Wagon)
(18) Rear oxygen sensor cord
140
6-3[D8A1]WIRING DIAGRAM
8. Electrical Wiring Harness and Ground Point
Page 1421 of 1456
2. RHD MODEL
B6M0510B
(1) Front wiring harness
(2) Engine wiring harness
(3) Room light cord
(4) Bulkhead wiring harness
(5) Instrument panel wiring harness(6) Front door cord RH
(7) Rear door cord RH
(8) Rear wiring harness
(9) Fuel tank cord
(10) Rear door cord LH(11) Front door cord LH
(12) Transmission cord
(13) Rear gate cord
(14) Rear oxygen sensor cord
141
[D8A2]6-3WIRING DIAGRAM
8. Electrical Wiring Harness and Ground Point
Page 1426 of 1456
C: BULKHEAD WIRING HARNESS (IN ENGINE ROOM)
1. LHD MODEL
Connector Connecting to
No. Pole Color Area No. Name
B1 2 * B-2 Pressure source switching solenoid (2500 cc engine model)
B2 3 Black B-2 Boost sensor (2500 cc engine model)
B3 5 Gray B-2 Mass air flow sensor (2500 cc engine model)
B4 4 Gray B-2 AT dropping resistor
B5 2 Gray B-2 Resistor (Daytime running light)
B62 Gray B-2 ABS front sensor RH
2 Brown B-2 ABS front sensor RH (Outback with step roof)
B7 4 * B-2 Cruise control pump
B8 6 * A-2 Front wiper motor
B9 2 Black A-2 FWD switch (AT)
B10 2 Brown B-2 A/C pressure switch
B11 20 * B-3 T4
Transmission (AT)
B12 12 Gray B-2 T3
B13 6 Gray B-3 Ignitor (2500 cc engine model)
B14 1 Black B-3 Starter (Magnet)
B152 Gray B-3 ABS front sensor LH
2 Brown B-3 ABS front sensor LH (Outback with step roof)
B16 2 Gray B-3 Brake fluid level switch
B17 3 * B-2 Vehicle speed sensor (MT)
B18 3 Dark gray B-2 Front oxygen sensor (2500 cc engine model)
B194 * B-2 T5Rear oxygen sensor cord (2500 cc engine except California
model)
4 * B-2 Rear oxygen sensor (2500 cc engine California model)
B206 Light gray B-2 E1 Engine wiring harness (2500 cc engine model)
10 * B-2 E1 Engine wiring harness (2200 cc engine model)
B2112 Light gray B-2 E2 Engine wiring harness (2500 cc engine model)
20 * B-2 E2 Engine wiring harness (2200 cc engine model)
B22 16 Light gray B-2 E3
B24 2 Gray B-2 T1 Back-up light switch (MT)
B25 2 Brown B-2 T2 Neutral position switch (MT)
B177 3 Gray A-3 Wiper deicer
*: Non-colored
146
6-3[D8C1]WIRING DIAGRAM
8. Electrical Wiring Harness and Ground Point
Page 1428 of 1456
2. RHD MODEL
Connector Connecting to
No. Pole Color Area No. Name
B4 4 Gray B-2 AT dropping resistor
B7 4 Gray B-3 Cruise control pump
B8 6 * B-3 Front wiper motor
B9 2 Black A-2 FWD switch
B11 20 * B-3 T4
Transmission
B12 12 Gray B-2 T3
B14 1 Black B-3 Starter (Magnet)
B16 2 Gray B-2 Brake fluid level switch
B17 2 Black B-3 Vehicle speed sensor (MT)
B20 10 * B-2 E1
Engine wiring harness B21 20 * B-2 E2
B22 16 * B-2 E3
B26 2 Black B-3
M/B B27 3 * B-3
B28 1 Brown B-3
B29 2 * B-2 Rear washer motor
B110 2 Green B-3 Front washer motor
*: Non-colored
148
6-3[D8C2]WIRING DIAGRAM
8. Electrical Wiring Harness and Ground Point
Page 1430 of 1456
D: BULKHEAD WIRING HARNESS (IN COMPARTMENT)
1. LHD MODEL
Connector Connecting to
No. Pole Color Area No. Name
B30 24 * C-1 D1 Front door cord LH
B31 7 Yellow C-1 AB1 SRS (Airbag) harness
B32 3 Black C-1 Turn & hazard module
B33 4 Brown B-1 Diode (Brake fluid level)
B352 Black B-1Diode (Without step
light)
4 Brown B-1 Diode (With step light)
B36 22 Black C-1 i1
Instrument panel wiring
harness B37 22 * C-1 i2
B38 22 Brown C-1 i3
B39 20 Blue C-1 i4
B40 16 Gray C-2 Data link connector
B41 2 * C-2Power window circuit
breaker
B42 4 * C-2Power window and sun-
roof relay
B43 6 Black C-2Illumination control mod-
ule
B44 8 * C-2 Seat belt timer
B45 4 * B-1 R53 Sunroof cord
B46 4 Green B-1 Fuel pump relay
B47 6 Brown B-1 Main relay
B48 4 Blue B-1 Front fog light relay
B49 3 Black B-1 Horn relay
B50 4 * B-1 Blower relay
B51 11 Gray B-1
F/B
B52 12 Gray B-1
B53 6 Gray B-2Shield joint connector
(AT)
B54 24 * B-2
Transmission control
module
B55 24 Gray B-2
B57 12 Black B-2 Shift-lock control module
B59 3 * B-1 Interrupt relay (Security)
B60 4 * B-2Shield joint connector
(With TCS model)
B61 8 * B-2 F44
Front wiring harness
B62 20 * B-1 F45
B63 40 Gray B-1 P10Floor harness (With TCS
model)
B64 2 Black B-2 Stop light switch
B65 4 Black B-2Stop & brake switch
(With cruise control)
B66 3 Black B-2Pedal stroke sensor
(TCS)
B67 4 Black B-2Pedal stroke switch
(TCS)
B68 5 Black B-3 Slip ring
B69 11 Black B-3
Combination switch B70 9 * B-3
B71 8 * B-3
B72 6 Black B-3 Ignition switch
B73 2 Black B-3 Key lock solenoid (AT)
B74 2 Black B-3 Key warning switch
B75 2 Green C-2 B76
Test mode connector
B76 2 Green C-3 B75
B77 10 Brown B-2 Mode actuator
B79 14 Gray C-2 Check connector
B80 4 Blue B-2 i20Instrument panel wiring
harness
Connector Connecting to
No. Pole Color Area No. Name
B81 1´2 * C-2Diagnosis terminal
(Ground)
B82 6 Black C-2 Diagnosis connector
B834 * C-3Shield joint connector
(2500 cc engine model)
6 * D-4Shield joint connector
(2200 cc engine model)
B84 96Light
blueB-3Engine control module
(2500 cc engine model)
B86 4 * B-3 Blower motor resistor
B87 2 * B-3 Blower motor
B88 3 Black B-3 Evaporator thermoswitch
B89 2 Black B-3 Diode (Security)
B90 4 * B-4 R50 Room light cord
B91 4 * B-4FRESH/RECIRC actua-
tor
B92 8 * B-4 Door lock timer
B93 18 * C-2 Security control module
B94 20 Black B-4 Cruise control module
B95 2 Black B-4Diode (Daytime running
light)
B96 10 * B-4Daytime running light
control module
B97 8 * B-4 R1 Rear wiring harness
B98 24 Black B-4 R2 Rear wiring harness
B99 24 * B-4 R3 Rear wiring harness
B100 20 Blue B-4 F2Front wiring harness
(With ABS model)
B101 24 * B-4 D11 Front door cord RH
B102 5 Black B-4Daytime running light
relay
B103 4 Blue B-4High-beam relay (Day-
time running light)
B104 4 Pink B-4 Rear power supply relay
B105 5 Green B-1Starter interlock relay
(MT)
B106 2 * B-1 Clutch switch (MT)
B107 2 Blue B-1Clutch switch (Cruise
control)
B108 2 Black B-2 F46Front wiring harness
(Outback)
B109 4 Black C-1 Fuse holder (Outback)
B112 2 Black B-1 Diode (Front fog light)
B113 2 * C-1 D50 Front door cord LH
B134 35 * D-4
Engine control module
(2200 cc engine model) B135 28 * D-4
B136 30 * C-4
B176 16 * B-2Keyless entry control
module
B178 3 * B-4 R85Rear wiring harness
(Wiper deicer)
B183 1 * C-1 B184
Program connector
(Security)
B184 1 * C-1 B183
B205 2 * B-2Keyless entry short con-
nector
*: Non-colored
Connector Connecting to
No. Pole Color Area No. Name
S1 3 White D-3 Cruise control sub switch
150
6-3[D8D1]WIRING DIAGRAM
8. Electrical Wiring Harness and Ground Point