combination meter SUBARU FORESTER 2004 Service User Guide

AB-38
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
2 CHECK AIRBAG WARNING LIGHT.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (1M) in test harness
M to body harness connector (B31).
3) Connect the battery ground cable and turn
the ignition switch to ON.
4) Connect the connectors, (3M) and (4M) in
test harness M.Is the airbag warning light
turned off?Go to step 4.Go to step 3.
3 CHECK BODY HARNESS.
Check the body harness.
N
OTE:
After problem has been eliminated, disconnect
the connectors (3M) and (4M).Is the anything unusual to body
harness?Repair the body
harness.Replace the com-
bination meter
printed circuit.
Combination
Meter Assembly.>
4 CHECK POOR CONTACT.
Confirm that firm contact is secured between
the airbag control module and the connector
(AB3). ule.>Is the poor contact in connec-
tor (AB3)? Replace the airbag
main harness with
body harness or
replace the airbag
control module.
Airbag Control
Module.>Go to step 5.
5 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect the connectors (AB21) and
(AB26).
4) Remove the glove box and disconnect the
connectors (AB4).
5) Disconnect the connector (AB3) from the
airbag control module, and connect the con-
nector (1R) in test harness R. Airbag Control Module.>
6) Connect the battery ground cable and turn
the ignition switch to ON.
7) Connect the connectors (5R) and (6R) in
test harness R.
N
OTE:
After problem has been eliminated, disconnect
the connectors (5R) and (6R).Is the airbag warning light
turned off? Go to step 6.Replace the airbag
main harness with
body harness.
6 CHECK GROUNDING CIRCUIT.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB3) from the
airbag control module.
3) Connect the connector (1R) in test harness
R to body harness connector (AB3).
4) Measure the resistance between connector
(2R) in test harness R and the chassis ground.
Connector & terminal
(2R) No. 10 — Chassis ground:
(2R) No. 11 — Chassis ground: Is the resistance less than 10
Ω?Replace the airbag
control module.
Airbag Control
Module.>Repair the body-
grounding circuit. Step Check Yes No

AB-39
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
B: AIRBAG WARNING LIGHT REMAINS OFF.
DIAGNOSIS:
 Fuse No. 14 (in fuse box) is blown.
 Body harness circuit is open.
 Airbag warning light is faulty.
 Airbag main harness is faulty.
 Airbag control module is faulty.
CAUTION:
 Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground cable from battery, and wait more than 20 seconds before starting to work.
 After replacing the airbag module, seat belt pretensioner, roll connector, control module or sensor,
reconnect each part and confirm that the airbag warning light operates properly.
 When inspecting the airbag main harness, disconnect the airbag module connector of the driver
and passenger seats for safety reasons.
1. LHD MODEL
WIRING DIAGRAM:
AB-00739
12
34561
2345678910123456789101112131415161718192021222324252627282930
B31 i11AB3
i10
B:
C: i10
i11
AIRBAG
WARNING
LIGHTCOMBINATION
METERB9
B8
B10
NO.14
i3B38 28
i2B37 19
5
AIRBAG CONTROL MODULEAB3
B31
AB1
3
3
AIRBAG
CIRCUIT
E
BATTERY
1234567891011121314151617
1819202122232425262728
IGNITION
SWITCH
B: C:

AB-40
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
Step Check Yes No
1 CHECK COMBINATION METER.
Turn the ignition switch to ON, and confirm that
warning lights equipped in the combination
meter are turned on.Do the warning lights not for
airbag turn on?Go to step 2.Repair the combi-
nation meter
power supply.
Combination
Meter System.>
2 CHECK FUSE NO. 14 (IN FUSE&RELAY
BOX).
Remove the fuse No. 14 and perform visual
inspection.Is the fuse No. 14 (in fuse &
relay box) blown out? Replace the fuse
No. 14. If fuse No.
14 blows again, go
to step 3. Go to step 3.
3 CHECK AIRBAG WARNING LIGHT CIRCUIT
(IN COMBINATION METER).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB1) from
(B31).
3) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Go to step 4.Replace the airbag
warning light bulb
or combination
meter printed cir-
cuit. 10, Combination
Meter Assembly.>
4 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect the connector (AB3) from the
airbag control module. Control Module.>
4) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Replace the airbag
control module.
Airbag Control
Module.>Replace the airbag
main harness with
body harness.

AB-41
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
2. RHD MODEL
WIRING DIAGRAM:
AB-00740
12
34561
2345678910123456789101112131415161718192021222324252627282930
B31 i11AB3
i10
B:
C: i10
i11
AIRBAG
WARNING
LIGHTCOMBINATION
METERB9
B8
B10
NO.14
i3B38 20
10
16
AIRBAG CONTROL MODULEAB3
B31
AB1
1
3
AIRBAG
CIRCUIT
E
BATTERY
1234567891011121314151617
1819202122232425262728
IGNITION
SWITCH

AB-42
AIRBAG SYSTEM (DIAGNOSTIC)
Airbag Warning Light Failure
Step Check Yes No
1 CHECK COMBINATION METER.
Turn the ignition switch to ON, and confirm that
warning lights equipped in the combination
meter are turned on.Do the warning lights not for
airbag turn on?Go to step 2.Repair the combi-
nation meter
power supply.
Combination
Meter System.>
2 CHECK FUSE NO. 14 (IN FUSE&RELAY
BOX).
Remove the fuse No. 14 and perform visual
inspection.Is the fuse No. 14 (in fuse &
relay box) blown out?Replace the fuse
No. 14. If fuse No.
14 blows again, go
to step 3. Go to step 3.
3 CHECK AIRBAG WARNING LIGHT CIRCUIT
(IN COMBINATION METER).
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Disconnect the connector (AB1) from
(B31).
3) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Go to step 4.Replace the airbag
warning light bulb
or combination
meter printed cir-
cuit. 10, Combination
Meter Assembly.>
4 CHECK AIRBAG MAIN HARNESS.
1) Turn the ignition switch to OFF, disconnect
the battery ground cable, and wait more than
20 seconds.
2) Connect the connector (AB1) to (B31).
3) Disconnect the connector (AB3) from the
airbag control module. Control Module.>
4) Connect the battery ground cable and turn
the ignition switch to ON.Is the airbag warning light
turned on?Replace the airbag
control module.
Airbag Control
Module.>Replace the airbag
main harness with
body harness.

SB-8
SEAT BELT SYSTEM
Seat Belt Warning System
6 CHECK HARNESS BETWEEN SEAT BELT
SWITCH AND CHASSIS GROUND.
Measure the resistance of harness between
seat belt switch and chassis ground.
Connector & terminal
(R8) No. 1 — Chassis ground:Is the resistance more than 1
MΩ?Go to step 7.Repair the open
circuit of harness
between seat belt
switch and chas-
sis ground.
7 CHECK SEAT BELT SWITCH.
1) Hold the tang plate disconnected from seat
belt buckle.
2) Measure the resistance between seat belt
switch terminals.
Te r m i n a l s
(R8) No. 1 — (R8) No. 2:Is the resistance less than 1
Ω?Go to step 8.Replace the inner
belt assembly.
8 CHECK SEAT BELT SWITCH.
1) Insert the tang plate into seat belt buckle.
2) Measure the resistance between seat belt
switch terminals.
Te r m i n a l s
(R8) No. 1 — (R8) No. 2:Is the resistance more than 1
MΩ?Go to step 9.Replace the inner
belt assembly.
9 CHECK OPERATION OF SPEEDOMETER IN
COMBINATION METER.
Check the speedometer indicates vehicle
speed correctly.Does the speedometer operate
correctly?Go to step 10.Check the speed-
ometer circuit.
10 CHECK VEHICLE MODEL.
Check the model of vehicle.Is the vehicle MT model? Go to step 11.Go to step 13.
11 CHECK HARNESS BETWEEN VEHICLE
SPEED SENSOR AND SEAT BELT TIMER
MODULE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector of vehicle speed
sensor.
3) Measure the resistance between vehicle
speed sensor harness connector and seat belt
timer module connector.
Connector & terminal
(B17) No. 1 — (B44) No. 7:Is the resistance less than 10
Ω?Go to step 12.Repair the open
harness between
vehicle speed sen-
sor and seat belt
timer module.
12 CHECK HARNESS BETWEEN VEHICLE
SPEED SENSOR AND SEAT BELT TIMER
MODULE.
Measure the resistance between seat belt
timer module harness connector and chassis
ground.
Connector & terminal
(B44) No. 7 — Chassis ground:Is the resistance more than 1
MΩ?Go to step 15.Repair the short of
harness.
13 CHECK HARNESS BETWEEN TCU AND
SEAT BELT TIMER MODULE.
1) Turn the ignition switch to OFF.
2) Disconnect the connector of TCU.
3) Measure the resistance of harness
between TCU harness connector and seat belt
timer module harness connector
Connector & terminal
(B56) No. 17 — (B44) No. 7:Is the resistance less than 10
Ω?Go to step 14.Repair the open
harness between
TCU and seat belt
timer module. Step Check Yes No

INSTRUMENTATION/DRIVER INFO
IDI
Page
1. General Description ....................................................................................2
2. Combination Meter System .........................................................................3
3. Combination Meter Assembly ...................................................................10
4. Speedometer.............................................................................................13
5. Tachometer ...............................................................................................14
6. Fuel Gauge ...............................................................................................15
7. Water Temperature Gauge .......................................................................16
8. Ambient Sensor.........................................................................................17

IDI-2
INSTRUMENTATION/DRIVER INFO
General Description
1. General Description
A: SPECIFICATION
B: CAUTION
 Be careful not to damage meters and instrument panel.
 Be careful not to damage meter glasses.
 Make sure that electrical connector is connected securely.
 After installation, make sure that each meter operates normally.
 Use gloves to avoid damage and getting fingerprints on the glass surface and meter surfaces.
 Do not apply excessive force to the printed circuit.
 Do not drop or otherwise apply impact.
C: PREPARATION TOOL
1. GENERAL TOOL
Combination meterSpeedometer Electric pulse type
Temperature gauge Cross coil type
Fuel gauge Cross coil type
Tachometer Electric pulse type
Turn signal indicator light 14 V — 2 W
Charge indicator light 14 V — 1.4 W
Oil pressure indicator light LED
ABS warning light 14 V — 1.4 W
Malfunction indicator light LED
HI-beam indicator light 14 V — 2 W
Door open warning light LED
Seat belt warning light LED
Brake fluid and parking brake warning
light14 V — 2 W
FWD indicator light LED
AIRBAG warning light LED
Meter illumination light 14 V — 3.4 W, 14 V — 2 W
AT OIL TEMP. warning light LED
LO indicator light LED
HOLD indicator light LED
Immobilizer indicator light LED
Rear differential oil temperature warn-
ing light14 V — 2 W
Cruise indicator light 14 V — 1.4 W
Rear fog light indicator light 14 V — 2 W
POWER indicator light 14 V — 1.4 W
Low fuel warning light LED
AT select lever position indicator light 14 V — 100 mA
LCD back light 14 V — 1.4 W
TOOL NAME REMARKS
Circuit tester Used for measuring resistance and voltage.

IDI-3
INSTRUMENTATION/DRIVER INFO
Combination Meter System
2. Combination Meter System
A: WIRING DIAGRAM
1. COMBINATION METER

2. OUTSIDE TEMPERATURE INDICATOR

IDI-4
INSTRUMENTATION/DRIVER INFO
Combination Meter System
B: INSPECTION
CAUTION:
When measuring voltage and resistance of the ECM, TCM, or each sensor, use a tapered pin with a
diameter of less than 0.64 mm (0.025 in) in order to avoid poor contact. Do not insert the pin more
than 2 mm (0.08 in).
1. SYMPTOM CHART
Symptom Repair order Reference
Combination meter assembly does not operate. (1) Power supply
(2) Ground circuit POWER SUPPLY AND
GROUND CIRCUIT,
INSPECTION, Combi-
nation Meter System.>
Speedometer does not operate. (1) (MT model) Vehicle speed sensor
(AT model) TCM
(2) Harness
(3) SpeedometerMT model: 5, CHECK VEHICLE
SPEED SENSOR,
INSPECTION, Combi-
nation Meter System.>
AT model: 6, CHECK TRANSMIS-
SION CONTROL MOD-
ULE (TCM),
INSPECTION, Combi-
nation Meter System.>
Tachometer does not operate. (1) ECM
(2) Harness
(3) Tachometer ENGINE CONTROL
MODULE (ECM),
INSPECTION, Combi-
nation Meter System.>
Fuel gauge does not operate. (1) Fuel level sensor
(2) Harness
(3) Fuel gauge FUEL LEVEL SEN-
SOR, INSPECTION,
Combination Meter
System.>
Water temperature gauge does not operate. (1) Engine coolant temperature sensor
(2) Harness
(3) Water temperature gauge ENGINE COOLANT
TEMPERATURE SEN-
SOR, INSPECTION,
Combination Meter
System.>
Outside temperature indicator does not operate. (1) Ambient sensor
(2) Harness
(3) Combination meter OUTSIDE TEMPERA-
TURE INDICATOR,
INSPECTION, Combi-
nation Meter System.>