Subaru 2001 IMPREZA User manual

FUJI HEAVY INDUSTRIES LTD. G1830GE6
2001 IMPREZA SERVICE MANUAL QUICK REFERENCE INDEX
BODY SECTION
This service manual has been prepared
to provide SUBARU service personnel
with the necessary information and data
for the correct maintenance and repair
of SUBARU vehicles.
This manual includes the procedures
for maintenance, disassembling, reas-
sembling, inspection and adjustment of
components and diagnostics for guid-
ance of experienced mechanics.
Please peruse and utilize this manual
fully to ensure complete repair work for
satisfying our customers by keeping
their vehicle in optimum condition.
When replacement of parts during
repair work is needed, be sure to use
SUBARU genuine parts.
All information, illustration and specifi-
cations contained in this manual are
based on the latest product information
available at the time of publication
approval.
HVAC SYSTEM
(HEATER, VENTILATOR AND A/C) AC
HVAC SYSTEM (AUTO A/C)
(DIAGNOSTICS) AC
AIRBAG SYSTEM AB
AIRBAG SYSTEM (DIAGNOSTICS) AB
SEAT BELT SYSTEM SB
LIGHTING SYSTEM LI
WIPER AND WASHER SYSTEMS WW
ENTERTAINMENT ET
COMMUNICATION SYSTEM COM
GLASS/WINDOWS/MIRRORS GW
BODY STRUCTURE BS
INSTRUMENTATION/DRIVER INFO IDI
SEATS SE
SECURITY AND LOCKS SL
IMMOBILIZER (DIAGNOSTICS) IM
SUNROOF/T-TOP/CONVERTIBLE TOP
(SUNROOF) SR
EXTERIOR/INTERIOR TRIM EI

INSTRUMENTATION/DRIVER INFO IDI
Page
1. General Description ....................................................................................2
2. Combination Meter System.........................................................................4
3. Combination Meter Assembly...................................................................19
4. Speedometer.............................................................................................21
5. Tachometer...............................................................................................22
6. Fuel Gauge ...............................................................................................23
7. Water Temperature Gauge.......................................................................24
8. Ambient Sensor.........................................................................................25

IDI-2
INSTRUMENTATION/DRIVER INFO GENERAL DESCRIPTION
1. General Description
A: SPECIFICATIONS
Combination meter
Speedometer Electric pulse type
Temperature gauge Thermistor cross coil type
Fuel gauge Resistance cross coil type
Tachometer Electric impulse type
Turn signal indicator light 14 V —1.4 W
Charge indicator light LED
Oil pressure indicator light LED
ABS warning light LED
CHECK ENGINE warning light
(Malfunction indicator light) LED
HI-beam indicator light 14 V —1.4 W
Door open warning light LED
Seat belt warning light LED
Brake fluid and parking brake warning
light LED
FWD indicator light LED
AIRBAG warning light LED
Meter illumination light 14 V —3 W, 14 V —2 W
AT OIL TEMP. warning light LED
LO indicator light LED
HOLD indicator light LED
Immobilizer indicator light LED
POWER indicator light 14 V —2 W
Low fuel warning light LED
AT select lever position indicator light 14 V —100 mA
LCD back light 14 V —1.4 W

IDI-3
INSTRUMENTATION/DRIVER INFO
GENERAL DESCRIPTION
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 circuit plate.
•Do not drop or otherwise apply impact.
C: PREPARATION TOOL
1. GENERAL TOOLS
TOOL NAME REMARKS
Circuit Tester Used for measuring resistance and voltage.

IDI-4
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
2. Combination Meter System
A: SCHEMATIC
1. COMBINATION METER
METER-01 METER-01
(GREEN)
i12
To C:
(GREEN)
i11
To B:
(GREEN)
i10
To A:
B16
B29
B15
B14
B7
B8
B1
B30
C7
C14
C3
C4
C8
C13
C6
A1
A2
A6
A5
A9
A10
C1
GG64-20A

IDI-5
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
GG64-20B
METER-02 METER-02
SEAT BELTWARNING LIGHT
SEAT BELT SWITCH
ENGINE CONTROL MODULE
ABS CONTROL MODULE
TRANSMISSON CONTROL MODULE
OIL PRESSURE SWITCH
GENERATOR
BRAKE FLUID LEVEL
WARNING SWTCH
FWD INDICATOR LIGHT
MALFUNCTION INDICATOR LIGHT
OIL PRESSUREWARNING LIGHT
ABSWARNING LIGHT
CHARGEWARNING LIGHT
PARKING BRAKE/BRAKE FLUID LEVELWARNING LIGHT
AT OILTEMPWARNING LIGHT
PARKING BRAKE SWITCH
METER-03
A
METER-04
B
B19
B1 B2 B5 B4 B3 C6
B9
DOORWARNING LIGHT
B14 B13
IMMOBILIZER INDCATOR LIGHT
DOOR SWITCH
IMMOBILIZER CONTROL MODULE
B6
A10
B

IDI-6
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
GG64-20C
METER-03 METER-03
1
2
INHIBITOR
SWITCH
DIMMER SWITCH
3
R
D
TURN SIGNAL INDICATOR LIGHT RH
N
TURN SIGNAL INDICATOR LIGHT LH
HEAD LIGHT RELAY RH
TURN SIGNAL SWITCH
HI-BEAM
P
METER-04
E
METER-02 AMETER-04
C
AIRBAG WARNING LIGHT
AIRBAG CONTROL MODULE
IGN
IGN
IGN
B
B
SNOW HOLD PILOT LIGHT
AWD-LO INDICATOR LIGHT
AWD-LO SWITCH
POWER PILOT LIGHT
A3
B30
C7
B29
AIRBAG CIRCUIT
METER-04
D
B18
B10
B15
C11
B10
C10
C4
C5
C12
C14
C13
DIMMER CIRCUIT
DIMMER
CIRCUIT

IDI-7
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
GG64-20D
H
C
CUSTOM CPU
FUEL GAUGE MODULE
AMBIENT SENSOR
THERMOMETER
ILLUMINATION
LIGHT
TAIL & ILLUMINATION
RELAY
METER-04 METER-04
POWER CIRCUIT
WATER TEMPERATURE GAUGE
FUEL GAUGE
ODO METER
TRIP METER
OUT.TEMP
SPEEDOMETERTACHOMETER
F
A8
BUZZER
I/F
: AT MODEL
: MT MODEL
AT
MT
:WITH AUTO A/C MODEL
AC
B
TRANSMISSION CONTROL MODULE
VEHICLE SPEED SENSOR
AUTO A/C
CONTROL
MODULE
ENGINE CONTROL MODULE
METER-03 C
METER-03 D
C9
C2
B11
B8
A9 A6
E
LOW-FUEL
WARNING LIGHT
MT
AT
AC
AC
A2
A5
I/F I/F
I/F I/F
C8
METER-03 E
METER-02 B
BRIGHT
SWITCH
IGNITION SWITCH
A7
BATTERY
+–
DRIVER
I/F
DRIVER
ODO/TRIP LCD
BACK LIGHT OUTTEMP LCD BACK
LIGHT
TRIP
CHANGE
TRIP
RESET SWITCH
AB
B12
C3

IDI-8
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
2. OUTSIDE TEMPERATURE INDICATOR LHD MODEL
GL96-20
O/T(L)-01 O/T(L)-01
RW
LR LR
FB-36
F/B FUSE NO. 13
(IG)
FB-9
M/B FUSE NO. 2
(B)
FB-8
M/B FUSE NO. 2
TO POWER SUPPLY ROUTING
LR
GOr A10
B
BL B8
BA6
YB B12
BP
LR
GOr
BL
YB
BP B11
A7
CUSTOM
CPU LCD
LR
RW 20
BL 21
YB 12
BP 22
23
AMBIENT
SENSOR
1
2
COMBINATION
METER
i10
A:
i11
B:
I/F
I/F
I/F
REF.TO GND-03
POWER
CIRCUIT
BL
YB
B17
BPB9
A11
AUTO A/C
CONTROL
MODULE
B282
A:
B283
B:
BP
BL
BP
BL
BP
BL
5
4
F78
1 2
(GREEN)
(BLACK)
A: i10
123456789
10
B283 (GRAY)
123456789
10
11 12 13 14 15 16 17 18 19 20
B282
12345678
9
10 11 12 13 14 15 16
(GRAY)A: B:
F45
i2
34
12 89
10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
567
(GREEN)B: i11
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
B62
B36 i1
F45
B B
24
i2
B37
F78
B36
34
12 89
10 11
12 13 14 15 16 17 18 19 20 21 22 23 24
56 7
:WITH AUTO A/C MODEL
AC
AC
AC
AC

IDI-9
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
3. OUTSIDE TEMPERATURE INDICATOR RHD MODEL
GR96-20
O/T(R)-01 O/T(R)-01
GW
LR
FB-36
F/B FUSE NO. 13
(IG)
MB-10
M/B FUSE NO.2
TO POWER SUPPLY ROUTING
BYB B8
BA6
Or
GW
LR
B11
LR
A10
GW
A7
CUSTOM
CPU LCD
22
21
AMBIENT SENSOR
LR
Or
W
i3
24
23
Or
YB
26 B 21
YB
B
W
i2
B37
Or
YB
2
1
B62 F45 F78
COMBINATION
METER
i10
A:
i11
B:
B38
I/F
I/F I/F
REF.TO GND-03
: AT MODEL
: MT MODEL
AT
MT
:WITH AUTO A/C MODEL
AC
POWER CIRCUIT
GW
LR
GW
3
4GW
i1
B36
LR
AT
MT
AT
MT
AT MT
AT MT
Or
W
B9
YBB17
A11
AUTO A/C
CONTROL
MODULE
B282
A: B283
B:
Or
YB
Or
YB
13
14
F78
1 2
(GREEN)(BLACK) A: i10
123456789
10
B283 (GRAY)
123456789
10
11 12 13 14 15 16 17 18 19 20
B282
12345678
9
10 11 12 13 14 15 16
(BLACK)
i1
1 2 3 456
7 8 9 10 11 12 13 14
i3
123 8
9
10
4
11 12 13 14 15 16
567
17 18
21
9
32
i2
1234 56
10 11 12 13 14 15
7
16
23 30
19 20
22 26 27 28 29
8
17
24 31
18
25
(GREEN)B: i11
1 2 3 4 5 6 7 8 9 10 11 12 13 14
15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
(GRAY)A:
(BLACK)
F45 (BLACK)
B:
AC
AC
AC
WB12

IDI-10
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 <Ref. to IDI-11, CHECK POWER SUPPLY AND
GROUND CIRCUIT,
INSPECTION, Combi-
nation Meter System.>
Speedometer does not operate. (1) (MT) Vehicle speed sensor
(AT) Transmission control module
(2) Harness
(3) Speedometer
MT: <Ref. to IDI-12,
CHECK VEHICLE
SPEED SENSOR,
INSPECTION, Combi-
nation Meter System.>
AT: <Re. to IDI-<Ref. to
IDI-13, CHECK
TRANSMISSION CON-
TROL MODULE,
INSPECTION, Combi-
nation Meter System.>
Tachometer does not operate. (1) Engine control module
(2) Harness
(3) Tachometer
<Ref. to IDI-14, CHECK
ENGINE CONTROL
MODULE, INSPEC-
TION, Combination
Meter System.>
Fuel gauge does not operate. (1) Fuel level sensor
(2) Harness
(3) Fuel gauge
<Ref. to IDI-15, CHECK
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
<Ref. to IDI-16, CHECK
ENGINE COOLANT
TEMPERATURE SEN-
SOR, INSPECTION,
Combination Meter
System.>
Outside temperature indicator does not operate. (1) Ambient sensor
(2) Harness
(3) Combination meter
(4) Auto A/C control module
<Ref. to IDI-17, CHECK
OUTSIDE TEMPERA-
TURE INDICATOR,
INSPECTION, Combi-
nation Meter System.>

IDI-11
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
2. CHECK POWER SUPPLY AND GROUND CIRCUIT
Step Check Yes No
1 CHECK POWER SUPPLY FOR COMBINA-
TION METER.
5)Remove combination meter. <Ref. to IDI-19,
REMOVAL, Combination Meter Assembly.>
6)Disconnect combination meter harness con-
nector.
7)Turn ignition switch to ON.
8)Measure voltage between combination
meter connector (i10) and chassis ground.
Connector & terminal
(i10) No. 7 (+) —Chassis ground ( −
−−
− ):
Is the voltage more than 10 V? Go to step 2. Check harness for
open or short
between ignition
switch and combi-
nation meter.
2 CHECK POWER SUPPLY FOR COMBINA-
TION METER.
Measure voltage between combination meter
connector (i10) and chassis ground.
Connector & terminal
(i10) No. 10 (+) —Chassis ground ( −
−−
− ):
Is the voltage more than 10 V? Go to step 3. Check harness for
open or short
between fuse and
combination
meter.
3 CHECK GROUND CIRCUIT OF COMBINA-
TION METER.
1)Turn ignition switch to OFF.
2)Measure resistance of harness between
combination meter connector (i10) and chassis
ground.
Connector & terminal
(i10) No. 6 (+) —Chassis ground ( −
−−
− ):
Is the resistance less than 10
Ω?Replace combina-
tion meter printed
circuit.
Repair wiring har-
ness.

IDI-12
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
3. CHECK VEHICLE SPEED SENSOR
Step Check Yes No
1 CHECK VEHICLE SPEED SENSOR.
1)Set the vehicle on a free roller, or lift-up the
vehicle and support it with safety stands.
2)Remove the combination meter with harness
connector.
Warning:
Be careful not to get caught in the running
wheels.
3)Drive the vehicle at a speed greater than 20
km/h (12 MPH).
4)Measure voltage between combination
meter connector (i10) and chassis ground.
Connector & terminal
(i10) No. 2 (+) —Chassis ground ( −
−−
− ):
Is the voltage less than 1V
←→ more than 4 V? Check speedome-
ter.<Ref.toIDI-21,
REMOVAL,
Speedometer.>
Go to step 2.
2 CHECK VEHICLE SPEED SENSOR POWER
SUPPLY.
1)Turn ignition switch to OFF.
2)Disconnect vehicle speed sensor harness
connector.
3)Turn ignition switch to ON.
4)Measure voltage between vehicle speed
sensor connector (B17) and engine ground.
Connector & terminal
(B17) No. 3 (+) —Engine ground ( −
−−
− ):
Is the voltage more than 10 V? Go to step 3. Check harness for
open or short
between ignition
switch and vehicle
speed sensor.
3 CHECK HARNESS BETWEEN VEHICLE
SPEED SENSOR AND ENGINE GROUND.
1)Turn ignition switch to OFF.
2)Measure resistance between vehicle speed
sensor connector (B17) and engine ground.
Connector & terminal
(B17) No. 2 (+) —Engine ground ( −
−−
− ):
Is the resistance less than 10
Ω?Go to step 4. Repair wiring har-
ness.
4 CHECK HARNESS BETWEEN VEHICLE
SPEED SENSOR AND COMBINATION
METER.
1)Disconnect connector from combination
meter.
2)Measure resistance between vehicle speed
sensor harness connector and combination
meter harness connector.
Connector & terminal
(B17) No. 1 —(i10) No. 2:
Is the resistance less than 10
Ω?Replace vehicle
speed sensor. Repair wiring har- ness.

IDI-13
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
4. CHECK TRANSMISSION CONTROL MODULE
Step Check Yes No
1 CHECK TRANSMISSION CONTROL MOD-
ULE SIGNAL.
1)Set the vehicle on a free roller, or lift-up the
vehicle and support it with safety stands.
Warning:
Be careful not to get caught in the running
wheels.
2)Drive the vehicle faster than 10 km/h (6
MPH).
3)Measure voltage between transmission con-
trol module connector (B56) and chassis
ground.
Connector & terminal
(B56) No. 17 (+) —Chassis ground ( −
−−
− ):
Is the voltage less than 1 V
←→ more than 4 V? Go to step 2. Check transmis-
sion control mod-
ule. <Ref. to AT-2,
Basic Diagnostic
Procedure.>
2 CHECK HARNESS BETWEEN TRANSMIS-
SION CONTROL MODULE AND COMBINA-
TION METER.
1)Turn ignition switch to OFF.
2)Disconnect connector from transmission
control module and combination meter.
3)Measure resistance between transmission
control module harness connector (B56) and
combination meter harness connector (i10).
Connector & terminal
(B56) No. 17 —(i10) No. 2:
Is the resistance less than 10
Ω?Check speed
meter. <Ref. to IDI-
21, REMOVAL,
Speedometer.>
Repair wiring har-
ness.

IDI-14
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
5. CHECK ENGINE CONTROL MODULE
Step Check Yes No
1 CHECK ENGINE CONTROL MODULE SIG-
NAL.
1)Start the engine.
2)Measure voltage between engine control
module connector (B136: turbo engine model)
or (B134: non-turbo engine model) and engine
ground.
Connector & terminal
Turbo engine model:
(B136) No. 9 (+) —Engine ground ( −
−−
− ):
Non-turbo engine model:
(B134) No. 30 (+) —Engine ground ( −
−−
− ):
Is the voltage 0 ←→ 13 V or
more? Go to step 2. Check engine con- trol module. <Ref.
to EN(SOHC)-2,
Basic Diagnostic
Procedure.> or
<Ref. to
EN(SOHCw/
oOBD)-2, Basic
Diagnostic Proce-
dure.> or <Ref. to
EN(DOHC
TURBO)-2, Basic
Diagnostic Proce-
dure.>
2 CHECK HARNESS BETWEEN COMBINA-
TION METER AND ENGINE CONTROL MOD-
ULE.
1)Turn ignition switch to OFF.
2)Disconnect connector from engine control
module and combination meter.
3)Measure resistance between engine control
module harness connector (B136: turbo
engine model) or (B134: non-turbo engine
model) and combination meter harness con-
nector (i10).
Connector & terminal
Turbo engine model:
(B136) No. 9 —(i10) No. 5:
Non-turbo engine model:
(B134) No. 30 —(i10) No. 5:
Is the resistance less than 10
Ω?Check tachome-
ter.<Ref.toIDI-22,
REMOVAL,
Tachometer.>
Repair wiring har-
ness.

IDI-15
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
6. CHECK FUEL LEVEL SENSOR
Step Check Yes No
1 CHECK ENGINE TYPE. Is the engine type SOHC with-
out OBD? Go to step 3. Go to step 2.
2 CHECK FUEL LEVEL SENSOR.
1)Check fuel level sensor. <Ref. to
EN(SOHC)-186, DTC P0462 —FUEL LEVEL
SENSOR CIRCUIT LOW INPUT —, Diagnos-
tic Procedure with Diagnostic Trouble Code
(DTC).> or <Ref. to EN(DOHC TURBO)-190,
DTC P0462 —FUEL LEVEL SENSOR CIR-
CUIT LOW INPUT —, Diagnostic Procedure
with Diagnostic Trouble Code (DTC).>
Is the fuel level sensor OK? Check fuel gauge.
<Ref. to IDI-23,
REMOVAL, Fuel
Gauge.>
Replace the fuel
level sensor.
3 CHECK FUEL LEVEL SENSOR.
1)Remove fuel level sensor. <Ref. to
FU(SOHCw/oOBD)-56, REMOVAL, Fuel Level
Sensor.>
2)Measure resistance between fuel level sen-
sor terminals when setting the float to FULL
and EMPTY position.
Terminals
No. 3 —No. 5:
Is the resistance 2 to 5 Ω
(FULL) and 92 to 95 Ω
(EMPTY)?
Go to step 4. Replace the fuel
level sensor.
4 CHECK HARNESS BETWEEN FUEL LEVEL
SENSOR AND COMBINATION METER.
1)Disconnect connector from combination
meter.
2)Measure resistance between fuel level sen-
sor harness connector terminal and combina-
tion meter harness connector terminal.
Connector & terminal
(R58) No. 3 —(i12) No. 2:
Is the resistance less than 10
Ω?Go to step 5. Repair wiring har-
ness.
5 CHECK FUEL LEVEL SENSOR GROUND
CIRCUIT.
Measure resistance between fuel level sensor
harness connector terminal and chassis
ground.
Connector & terminal
(R58) No. 5 —Chassis ground:
Is the resistance less than 10
Ω?Fuel level sensor
is OK. Repair wiring har- ness.

IDI-16
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
7. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Step Check Yes No
1 CHECKENGINECOOLANT TEMPERATURE
SENSOR.
Check engine coolant temperature sensor.
<Ref. to EN(SOHC)-122, DTC P0117 —
ENGINE COOLANT TEMPERATURE SEN-
SOR CIRCUIT LOW INPUT —, Diagnostic
Procedure with Diagnostic Trouble Code
(DTC).> or <Ref. to EN(SOHCw/oOBD)-76,
DTC 21 ENGINE COOLANT TEMPERATURE
SENSOR, Diagnostic Procedure with Diagnos-
tic Trouble Code (DTC).> or <Ref. to
EN(DOHC TURBO)-114, DTC P0117 —
ENGINE COOLANT TEMPERATURE SEN-
SOR CIRCUIT LOW INPUT —, Diagnostic
Procedure with Diagnostic Trouble Code
(DTC).>
Is engine coolant temperature
sensor OK? Go to step 2. Replace engine coolant tempera-
ture sensor.
2 CHECK HARNESS BETWEEN ENGINE
COOLANT TEMPERATURE SENSOR AND
COMBINATION METER.
1)Turn ignition switch to OFF.
2)Disconnect connector from engine coolant
temperature sensor and combination meter.
3)Measure resistance between engine coolant
temperature sensor harness connector (E8)
and combination meter harness connector
(i12).
Connector & terminal
(E8) No. 3 —(i12) No. 9:
Is the resistance less than 10
Ω?Check water tem-
perature gauge.
<Ref. to IDI-24,
REMOVAL, Water
Temperature
Gauge.>
Repair wiring har-
ness.

IDI-17
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
8. CHECK OUTSIDE TEMPERATURE INDICATOR
Step Check Yes No
1 CHECK AIR CONDITIONER TYPE. Is the vehicle equipped with
auto A/C? Go to step 6. Go to step 2.
2 CHECK POWER SUPPLY FOR AMBIENT
SENSOR.
1)Turn ignition switch OFF.
2)Disconnect connector from combination
meter.
3)Turn ignition switch ON.
4)Measure voltage between combination
meter terminal and chassis ground.
Connector & terminal
(i11) No. 11 (+) —Chassis ground ( −
−−
− ):
Is the voltage more than 4V? Go to step 3. Replace combina-
tion meter printed
circuit.
3 CHECK HARNESS BETWEEN AMBIENT
SENSOR AND COMBINATION METER.
1)Turn ignition switch OFF.
2)Disconnect connector from ambient sensor.
3)Measure resistance between ambient sensor
harness connector terminal and combination
meter harness connector terminal.
Connector & terminal
LHD model:
(F78) No. 1 —(i11) No. 11:
(F78) No. 2 —(i11) No. 8:
RHD model:
(F78) No. 2 —(i11) No. 11:
(F78) No. 1 —(i11) No. 8:
Is the resistance less than 10
Ω?Go to step 4. Repair wiring har-
ness.
4 CHECK AMBIENT SENSOR.
1)Remove ambient sensor.
2)Check ambient sensor. <Ref. to IDI-25,
INSPECTION, Ambient Sensor.>
Is the ambient sensor OK? Go to step 5. Replace the ambi-
ent sensor.
5 CHECK OUTSIDE TEMPERATURE INDICA-
TOR.
1)Connect combination meter harness con-
nector.
2)Connect a resistor (2.2 kΩ) between termi-
nals of ambient sensor harness connector.
3)Turn ignition switch ON and check the out-
side temperature indicator display.
Is the outside temperature indi-
cator indicating 25°C (77°F)? Repair poor con- tact of ambient
sensor harness
connector.
Replace combina-
tion meter printed
circuit.
6 CHECK POWER SUPPLY FOR COMBINA-
TION METER.
1)Turn ignition switch OFF.
2)Disconnect connector from auto A/C control
module.
3)Turn ignition switch ON.
4)Measure voltage between auto A/C control
module terminal and chassis ground.
Connector & terminal
(B282) No. 11 (+) —chassis ground ( −
−−
− ):
Is the voltage more than 4V? Go to step 7. Replace auto A/C
control module.

IDI-18
INSTRUMENTATION/DRIVER INFO
COMBINATION METER SYSTEM
7 CHECK HARNESS BETWEEN AUTO A/C
CONTROL MODULE AND COMBINATION
METER.
1)Turn ignition switch OFF.
2)Disconnect connector from combination
meter.
3)Measure resistance between auto A/C con-
trol module harness connector terminal and
combination meter harness connector termi-
nal.
Connector & terminal
(B282) No. 11 —(i11) No. 12:
Is the resistance less than 10
Ω?Go to step 8. Repair wiring har-
ness.
8 CHECK POWER SUPPLY FOR AMBIENT
SENSOR.
1)Turn ignition switch ON.
2)Measure voltage between auto A/C control
module terminal and chassis ground.
Connector & terminal
(B283) No. 9 (+) —chassis ground (
−
−−
− ):
Is the voltage more than 4V? Go to step 9. Replace auto A/C
control module.
9 CHECK HARNESS BETWEEN AMBIENT
SENSOR AND COMBINATION METER.
1)Turn ignition switch OFF.
2)Disconnect connector from ambient sensor.
3)Measure resistance between ambient sensor
harness connector terminal, combination
meter harness connector terminal and auto
A/C control module harness connector termi-
nal.
Connector & terminal
LHD model:
(F78) No. 1 —(i11) No. 11:
(F78) No. 1 —(B283) No. 9:
(F78) No. 2 —(i11) No. 8:
RHD model:
(F78) No. 2 —(i11) No. 11:
(F78) No. 2 —(B283) No. 9:
(F78) No. 1 —(i11) No. 8:
Is the resistance less than 10
Ω?Go to step 10. Repair wiring har-
ness.
10 CHECK AMBIENT SENSOR.
1)Remove ambient sensor.
2)Check ambient sensor. <Ref. to IDI-25,
INSPECTION, Ambient Sensor.>
Is the ambient sensor OK? Go to step 11. Replace the ambi-
ent sensor.
11 CHECK OUTSIDE TEMPERATURE INDICA-
TOR.
1)Connect combination meter and auto A/C
control module harness connector.
2)Connect a resistor (2.2 kΩ) between termi-
nals of ambient sensor harness connector.
3)Turn ignition switch ON and check the out-
side temperature indicator display.
Is the outside temperature indi-
cator indicating 25°C (77°F)? Repair poor con- tact of ambient
sensor harness
connector.
Replace combina-
tion meter printed
circuit.
Step Check Yes No

IDI-19
INSTRUMENTATION/DRIVER INFO
COMBINATION METER ASSEMBLY
3. Combination Meter Assem-
bly
A: REMOVAL
1) Disconnect ground cable from battery.
2) Set tilt steering at the lowest position.
3) Remove screws and detach meter visor.
4) Remove screws of combination meter and pull
out the meter toward you.
5) Disconnect connector in the upper area of com-
bination meter to remove meter.
CAUTION:
•Be careful not to damage meter or instrument
panel.
•Pay particular attention to avoid damaging
the meter glass.
B: INSTALLATION
Install in the reverse order of removal.
CAUTION:
•Make sure that electrical connector is con-
nected securely.
•Make sure that each meter operates normally.
: Hook pawl BO0012
BO0013