warning light SUBARU FORESTER 2004 Service Manual PDF

IM-11
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
Step Check Yes No
1 CHECK IMMOBILIZER WARNING LIGHT.
1) Turn the ignition switch to OFF.
2) Disconnect the harness connector from
IMM ECM.
3) Connect a resistor (750 Ω) between IMM
ECM harness connector terminal No. 9 and
chassis ground.Does the immobilizer warning
light illuminate?Go to step 2.Go to step 5.
2 CHECK IMM ECM GROUND CIRCUIT.
Measure the resistance between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 2, No. 3 — Chassis ground:Is the resistance less than 10
Ω?Go to step 3.Repair the open
circuit of IMMECM
ground circuit.
3 CHECK IMM ECM IGNITION CIRCUIT.
1) Turn the ignition switch to ON. (engine
OFF.)
2) Measure the voltage between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 12 (+) — Chassis ground(
−):Is the voltage more than 10 V? Go to step 4.Check the harness
for open or short
between IMM
ECM and ignition
switch.
4 CHECK IMM ECM POWER SUPPLY CIR-
CUIT.
1) Turn the ignition switch to OFF.
2) Measure the voltage between IMM ECM
harness connector terminal and chassis
ground.
Connector & terminal
(B141) No. 10, No. 11 (+) — Chassis
ground(
−):Is the voltage more than 10 V? Replace the IMM
ECM 37, Immobilizer
Control Module.>
and then replace
all ignition keys
(including the tran-
sponder). Then
perform teaching
operation. Refer to
teaching opera-
tion manual (Pub.
No. S0820GZ).Check the harness
for open or short
between IMM
ECM and fuse.
5 CHECK COMBINATION METER CIRCUIT.
1) Remove the combination meter. IDI-10, Combination Meter Assembly.>
2) Measure the voltage between combination
meter harness connector terminal and chassis
ground.
Connector & terminal
(i10) No. 8 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 6.Check the harness
for open or short
between combina-
tion meter and
fuse.
6 CHECK COMBINATION METER CIRCUIT.
Measure the resistance between IMM ECM
harness connector terminal and combination
meter harness connector terminal.
Connector & terminal
LHD model
(B141) No. 9 — (i12) No. 4:
RHD model
(B141) No. 9 — (i11) No. 5:Is the resistance less than 10
Ω?Faulty LED.
Replace the com-
bination meter
printed circuit.
DISASSEMBLY,
Combination
Meter Assembly.>Repair the har-
ness or connector.

IM-12
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
2. CHECK KEY WARNING SWITCH CIRCUIT
WIRING DIAGRAM:
IM-00006
B74
B61
F44
KEY WARNING
SWITCH
B141IMM ECM
LHD
RHDLHD
RHD
BATTERYM/B No.6
4
12
4
B74
1
2
B141
34 12
89
10 11125
67
F44
3
1
56
78
LHD: LHD MODEL
: RHD MODEL
RHD
2
4

IM-13
IMMOBILIZER (DIAGNOSTIC)
Diagnostics Chart for Immobilizer Warning Light
Step Check Yes No
1 CHECK POWER SUPPLY CIRCUIT.
1) Disconnect the harness connector from key
warning switch.
2) Measure the voltage between key warning
switch harness connector terminal and chassis
ground.
Connector & terminal
(B74) No. 2 (+) — Chassis ground (
−):Is the voltage more than 10 V? Go to step 2.Check the harness
for open or short
between key warn-
ing switch and
fuse.
2 CHECK KEY WARNING SWITCH.
1) Insert the ignition key to the ignition switch.
(OFF or ACC position)
2) Measure the resistance between key warn-
ing switch connector terminals.
Te r m i n a l
No. 1 — No. 2:Is the resistance less than 1
Ω?Go to step 3.Replace the key
warning switch.
3 CHECK KEY WARNING SWITCH.
1) Remove the ignition key from the ignition
switch.
2) Measure the resistance between key warn-
ing switch connector terminals.
Te r m i n a l
No. 1 — No. 2:Is the resistance more than
1 MΩ?Go to step 4.Replace the key
warning switch.
4 CHECK HARNESS BETWEEN KEY WARN-
ING SWITCH AND IMM ECM.
1) Disconnect the harness connector from key
warning switch.
2) Disconnect the harness connector from
IMM ECM.
3) Measure the resistance between key warn-
ing switch harness connector terminal and
IMM ECM harness connector terminal.
Connector & terminal
(B74) No. 1 — (B141) No. 4:Is the resistance less than 10
Ω?Replace the IMM
ECM 37, Immobilizer
Control Module.>
and then replace
all ignition keys
(including the tran-
sponder). Then
perform teaching
operation. Refer to
teaching opera-
tion manual (Pub.
No. S0820GZ).Repair the har-
ness between key
warning switch
and IMM ECM.

ME(H4SO)-29
MECHANICAL
Engine Oil Pressure
6. Engine Oil Pressure
A: INSPECTION
1) Disconnect the ground cable from battery.
2) Remove the generator from bracket. SC(H4SO)-15, REMOVAL, Generator.>
3) Disconnect the connector from oil pressure
switch.
4) Remove the oil pressure switch from cylinder
block. sure Switch.>
5) Connect the oil pressure gauge hose to cylinder
block.
6) Connect the battery ground cable to battery.
7) Start the engine, and then measure the oil pres-
sure.
Oil pressure:
Standard:
88 kPa (0.9 kg/cm
2, 13 psi) or more at 800 rpm
294 kPa (3.0 kg/cm2, 43 psi) or more at 5,000
rpmCAUTION:
 If the oil pressure is out of specification,
check the oil pump, oil filter and lubrication
line. gine Lubrication System Trouble in General.>
 If the oil pressure warning light is turned ON
and oil pressure is in specification, replace the
oil pressure switch. SPECTION, Engine Lubrication System Trouble
in General.>
NOTE:
The specified data is based on an engine oil tem-
perature of 80°C (176°F).
8) After measuring the oil pressure, install the oil
pressure switch. LATION, Oil Pressure Switch.>
Tightening torque:
25 N
⋅m (2.5 kgf-m, 18.1 ft-lb)
9) Install the generator and V-belt in the reverse or-
der of removal, and then adjust the V-belt deflec-
tion. belt.>
FU-00009
FU-00009
ME-00196

LU(H4SO)-2
LUBRICATION
General Description
1. General Description
A: SPECIFICATION
Lubrication methodForced lubrication
Oil pumpPump type Trochoid type
Number of teethInner rotor 9
Outer rotor 10
Outer rotor diameter×thicknessNon-turbo model 78×7 mm (3.07×0.28 in)
Turbo model 78×10 mm (3.07×0.39 in)
Tip clearance between inner and outer rotorStandard 0.04 — 0.14 mm (0.0016 — 0.0055 in)
Limit 0.18 mm (0.0071 in)
Side clearance between inner rotor and pump
caseStandard 0.02 — 0.07 mm (0.0008 — 0.0028 in)
Limit 0.12 mm (0.0047 in)
Case clearance between outer rotor and pump
caseStandard 0.10 — 0.175 mm (0.0039 — 0.0069 in)
Limit 0.20 mm (0.0079 in)
Capacity at
80°C (176°F)Non-turbo
model
600 rpmDischarge
pressure98 kPa (1.0 kg/cm
2, 14 psi)
Discharge
quantity3.22 (3.4 US qt, 2.8 Imp qt)/min.
5,000 rpmDischarge
pressure294 kPa (3.0 kg/cm
2, 43 psi)
Discharge
quantity32.62 (34.4 US qt, 28.7 Imp qt)/min.
Turbo model
600 rpmDischarge
pressure98 kPa (1.0 kg/cm
2, 14 psi)
Discharge
quantity4.62 (4.9 US qt, 4.0 Imp qt)/min.
5,000 rpmDischarge
pressure294 kPa (3.0 kg/cm
2, 43 psi)
Discharge
quantity47.02 (49.7 US qt, 41.4 Imp qt)/min.
Relief valve operation pressureNon-turbo model
490 kPa (5.0 kg/cm
2, 71 psi)
Turbo model
588 kPa (6.0 kg/cm
2, 85 psi)
Oil filterTy p eFull-flow filter type
Filtration areaNon-turbo
760 cm
2 (118 sq in)
Tu r b o
800 cm
2 (124 sq in)
By-pass valve opening pressureNon-turbo
157 kPa (1.60 kg/cm
2, 22.8 psi)
Tu r b o
160 kPa (1.63 kg/cm
2, 23.2 psi)
Outer diameter×widthNon-turbo 80×70 mm (3.15×2.76 in)
Tu r b o 6 8×65 mm (2.68×2.56 in)
Oil filter to engine thread size M 20×1.5
Oil pressure
switchType Immersed contact point type
Working voltage — wattage 12 V — 3.4 W or less
Warning light activation pressure
14.7 kPa (0.15 kg/cm
2, 2.1 psi)
Proof pressure
More than 981 kPa (10 kg/cm
2, 142 psi)
Oil capacity (at replacement) 4.02 (4.2 US qt, 3.5 Imp qt)

LU(H4SO)-8
LUBRICATION
Oil Pressure System
2. Oil Pressure System
A: WIRING DIAGRAM
LU-00102
E
i12
i10
i3
B38
B9
A3
B22
E3
14
E11
A:
B:
B:
i10
123456789101112131415161718192021222324252627282930219
32
1234 5610 11 12 13 14 15716
23 3019 20
22 26 27 28 29817
24 3118
25
i3B22
125678
131415169101112
34
17181920
**: 5
: 14
No.14SBF-4SBF-1
B72
14
B72i12
12345678910111213143412
TURBO MODEL NON-TURBO MODELBATTERY
IGNITION
SWITCH
COMBINATION
METER
OIL PRESSURE
WARNING LIGHT
OIL PRESSURE
SWITCH

LU(H4SO)-9
LUBRICATION
Oil Pressure System
B: INSPECTION
Step Check Yes No
1 CHECK COMBINATION METER.
1) Turn the ignition switch to ON. (engine
OFF)
2) Check other warning lights.Does the warning lights illumi-
nate?Go to step 2.Repair or replace
the combination
meter. 4, INSPECTION,
Combination
Meter System.>
2 CHECK HARNESS CONNECTOR BETWEEN
COMBINATION METER AND OIL PRES-
SURE SWITCH.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from oil pressure
switch.
3) Turn the ignition switch to ON.
4) Measure the voltage of harness between
the combination meter connector and chassis
ground.
Connector & terminal
(E11) No. 1 (+) — Chassis ground (
−):Is the voltage more than 10 V? Replace the oil
pressure switch.Go to step 3.
3 CHECK COMBINATION METER.
1) Turn the ignition switch to OFF.
2) Remove the combination meter.
3) Measure the resistance of combination
meter.
Te r m i n a l
No. B9 — No. A3:Is the resistance less than 10
Ω?Replace the har-
ness connector
between combina-
tion meter and oil
pressure switch.Repair or replace
the combination
meter and the oil
pressure switch
warning light bulb.

LU(H4SO)-24
LUBRICATION
Engine Lubrication System Trouble in General
9. Engine Lubrication System Trouble in General
A: INSPECTION
Before performing diagnostics, make sure that the engine oil level is correct and no oil leakage exists.
Trouble Possible cause Corrective action
1. Warning light remains
on.1) Oil pressure switch
failureCracked diaphragm or oil leakage within switch Replace.
Broken spring or seized contacts Replace.
2) Low oil pressureClogged oil filter Replace.
Malfunction of oil by-pass valve of oil filter Clean or replace.
Malfunction of oil relief valve of oil pump Clean or replace.
Clogged oil passage Clean.
Excessive tip clearance and side clearance of oil
pump rotor and gearReplace.
Clogged oil strainer or broken pipe Clean or replace.
3) No oil pressureInsufficient engine oil Replenish.
Broken pipe of oil strainer Replace.
Stuck oil pump rotor Replace.
2. Warning light does
not go on.1) Malfunction of combination meter Replace.
2) Poor contact of switch contact points Replace.
3) Disconnection of wiring Repair.
3. Warning light flickers
momentarily.1) Poor contact at terminals Repair.
2) Defective wiring harness Repair.
3) Low oil pressureCheck for the same
possible causes as
listed in 1. — 2).

EN(H4SO)-2
ENGINE (DIAGNOSTIC)
Basic Diagnostics Procedure
1. Basic Diagnostics Procedure
A: PROCEDURE
1. ENGINE
Step Check Yes No
1 CHECK ENGINE START FAILURE.
1) Ask the customer when and how the trou-
ble occurred using the interview check list.
List for Interview.>
2) Start the engine.Does the engine start? Go to step 2.Inspection using
“Diagnostics for
Engine Starting
Failure”. EN(H4SO)-57,
Diagnostics for
Engine Starting
Fai lu r e.>
2 CHECK ILLUMINATION OF MALFUNCTION
INDICATOR LIGHT.Does malfunction indicator
light illuminate?Go to step 3.Inspection using
“General Diagnos-
tic Table”. EN(H4SO)-255,
INSPECTION,
General Diagnos-
tic Table.>
3 CHECK INDICATION OF DTC ON DISPLAY
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor or the
OBD-II general scan tool to data link connec-
tor.
3) Turn the ignition switch to ON and the Sub-
aru Select Monitor or OBD-II general scan tool
switch to ON.
4) Read the DTC on the Subaru Select Moni-
tor or OBD-II general scan tool.Does the Subaru Select Moni-
tor or OBD-II general scan tool
indicate DTC?Record the DTC.
Repair the trouble
cause. EN(H4SO)-72, List
of Diagnostic Trou-
ble Code (DTC).>
Go to step 4.Repair the related
parts.
N
OTE:
If DTC is not shown
on display although
the engine warning
light illuminates, per-
form the diagnostics
of engine warning
light circuit or combi-
nation meter. to EN(H4SO)-47,
Malfunction Indica-
tor Light.>
4 PERFORM THE DIAGNOSIS.
1) Perform the Clear Memory Mode. EN(H4SO)-44, Clear Memory Mode.>
2) Perform the Inspection Mode. EN(H4SO)-37, Inspection Mode.>Does the Subaru Select Moni-
tor or OBD-II general scan tool
indicate DTC?Check on “Diag-
nostic Procedure
with Diagnostic
Trouble Code
(DTC)”
EN(H4SO)-78,
Diagnostic Proce-
dure with Diagnos-
tic Trouble Code
(DTC).>Finish the diagno-
sis.

EN(H4SO)-5
ENGINE (DIAGNOSTIC)
Check List for Interview
2. CHECK LIST No. 2
Check the following items about the vehicle’s state when malfunction indicator light turns on.
NOTE:
Use copies of this page for interviewing customers.
a) Other warning lights or indicators turn on. ❏ Yes / ❏ No
❏ Low fuel warning light
❏ Charge indicator light
❏ AT diagnostic indicator light
❏ ABS Warning light
❏ Oil pressure indicator light
b) Fuel level
 Lack of gasoline: ❏ Yes / ❏ No
 Indicator position of fuel gauge:
 Experienced running out of fuel: ❏ Ye s / ❏ No
c) Intentional connecting or disconnecting of harness connectors or spark plug cords: ❏ Yes / ❏ No
 What:
d) Intentional connecting or disconnecting of hoses: ❏ Ye s / ❏ No
 What:
e) Installing of other parts except genuine parts: ❏ Ye s / ❏ No
 What:
 Where:
f) Occurrence of noise: ❏ Yes / ❏ No
From where:
 What kind:
g) Occurrence of smell: ❏ Yes / ❏ No
From where:
 What kind:
h) Intrusion of water into engine compartment or passenger compartment: ❏ Yes / ❏ No
i) Troubles occurred
❏ Engine does not start.
❏ Engine stalls during idling.
❏ Engine stalls while driving.
❏ Engine speed decreases.
❏ Engine speed does not decrease.
❏ Rough idling
❏ Poor acceleration
❏ Back fire
❏ After fire
❏ Does not shift.
❏ Excessive shift shock