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14. DOOR CORD AND GROUND POINT (RHD
MODEL)
B2M0444
99
2-7ON-BOARD DIAGNOSTICS II SYSTEM
6. Wiring Diagram and Wiring Harness
Page 1306 of 2248
![SUBARU LEGACY 1995 Service Repair Manual 7. Basic Diagnostics Procedure
Trouble occurs.
Ask the customer when and how the
trouble occurred using interview
check list. <Ref. to [T702].>
Start the engine.
Ye sNoInspection using“9. Diagnosti SUBARU LEGACY 1995 Service Repair Manual 7. Basic Diagnostics Procedure
Trouble occurs.
Ask the customer when and how the
trouble occurred using interview
check list. <Ref. to [T702].>
Start the engine.
Ye sNoInspection using“9. Diagnosti](/manual-img/17/57432/w960_57432-1305.png)
7. Basic Diagnostics Procedure
Trouble occurs.
Ask the customer when and how the
trouble occurred using interview
check list.
Start the engine.
Ye sNoInspection using“9. Diagnostics for
Engine Start Failure [T900]”
Malfunction indicator lamp (MIL) illu-
minates.
Ye sNoInspection using“10. General Diag-
nostics Table [T1000]”
Inspection using Subaru select moni-
tor or OBD-II general scan tool.
(Subaru select monitor: MODE FB1)
Trouble code
No trouble code designated.Repair.
See NOTE: *1
designated.
Inspection using“11. Diagnostics
Chart with Trouble Code [T11A0]”.
See NOTE: *2.
Trouble code
designated.
Repair.
Inspection mode
Inspection using Subaru select moni-
tor or OBD-II general scan tool.
(Subaru select monitor: MODE FB0)
No trouble code
Clear memory mode.
designated.
END
NOTE:
*1: If trouble code is not shown on display although the
MIL illuminates, perform diagnostics of the MIL (CHECK
ENGINE LIGHT) circuit or combination meter.
Diagnostics for CHECK ENGINE Malfunction Indicator
Lamp (MIL) [T800].”>
*2: Carry out the basic check, only when trouble code
about automatic transmission is shown on display.
[T701].>
100
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Basic Diagnostics Procedure
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1. BASIC CHECK ITEMS FOR AT
When trouble code about automatic transmission is shown
on display, carry out the following basic check. After that,
carry out the replacement or repair work.
1) ATF level check
2) Differential gear oil level check
3) ATF leak check
4) Differential gear oil leak check
5) Brake band adjustment
6) Stall test
7) Line pressure test
8) Transfer clutch pressure test
9) Time lag test
10) Road test
11) Shift characteristics
NOTE:
As for the method, refer to 3-2 [W2A1].
101
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Basic Diagnostics Procedure
Page 1308 of 2248
2. CHECK LIST FOR INTERVIEW
Check the following items when problem occurred.
Customer’s name Engine no.
Date of sale Fuel brand
Date of repair Odometer readingkm
miles
Vin no.
WeatherFineCloudyRainySnowyVarious/Other
Outdoor TemperatureHotWarmCoolCold (approx.°F/°C)
PlaceHighwaySuburbsInner CityUphillDownhill
Rough roadOther
Engine Temp.ColdWarming-upAfter warming-upAny temp.Other
Engine speed
0 2,000 4,000 6,000 8,000 rpm
Driving conditionsNot affected
At startingWhile idlingAt racing
While acceleratingWhile cruising
While deceleratingWhile turning (RH/LH)
Vehicle speed
0 10203040 5060MPH
HeadlightON /OFF
BlowerON /OFF
A/C compressorON /OFF
Cooling fanON /OFF
Front wiperON /OFF
Rear wiperON /OFF
Rear defoggerON /OFF
RadioON /OFF
CD/CassetteON /OFF
Car phoneON /OFF
CB
NOTE: Use copies of this page for interviewing customers.
102
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Basic Diagnostics Procedure
Page 1309 of 2248

Check the following items about the vehicle’s state when
MIL turns on.
a) Other warning lights or indicators turn on.Ye s /No
1Low fuel warning light
2Charge indicator light
3AT diagnostics indicator light
4ABS warning light
5TCS warning light
6Engine oil pressure warning light
b) Fuel level
Lack of gasoline:Ye s /No
Indicator position of fuel gauge:
c) Intentional connecting or disconnecting of harness connectors or spark plug cords:Ye s /No
What:
d) Intentional connecting or disconnecting of hoses:Ye s /No
What:
e) Installing of parts other than genuine partsYe s /No
What:
Where:
f) Occurrence of noiseYe s /No
From where:
What kind:
g) Occurrence of smellYe s /No
From where:
What kind:
h) Intrusion of water into engine compartment or passenger compartmentYe s /No
i) Troubles occurred
1Engine does not start.
2Engine stalls during idling.
3Engine stalls while driving.
4Engine speed decreases.
5Engine speed does not decrease.
6Rough idling
7Poor acceleration
8Back fire
9After fire
10No shift
11Excessive shift shock
NOTE: Use copies of this page for interviewing customers.
103
2-7ON-BOARD DIAGNOSTICS II SYSTEM
7. Basic Diagnostics Procedure
Page 1310 of 2248
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)
Page 1311 of 2248

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.
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2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)
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4
CHECK SHORT CIRCUIT OF HARNESS.
1) Turn ignition switch to OFF.
2) Disconnect connector from ECM.
3) Turn ignition switch to ON.
: Does the MIL come on?
: Repair short circuit of harness between ECM and
combination meter.
: Replace ECM.
106
2-7ON-BOARD DIAGNOSTICS II SYSTEM
8. Diagnostics for CHECK ENGINE Malfunction Indicator Lamp (MIL)