Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Subaru Impreza 2001-2002.2004-2007 Approved Subaru Impreza 2004 WRX STi 06. BODY 12. INSTRUMENTATION DRIVER INFO 02. Combination Meter System
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COMBINATION METER SYSTEM
INSTRUMENTATION/DRIVER INFO
2. Combination Meter System
A: SCHEMATIC
1. COMBINATION METER
2. OUTSIDE TEMPERATURE INDICATOR
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
Speedometer does not operate. (1) Vehicle speed sensor (MT model) MT model:
AT model:
Tachometer does not operate. (1) ECM
Fuel gauge does not operate. (1) Fuel level sensor
Water temperature gauge does not operate. (1) Engine coolant temperature sensor
Outside temperature indicator does not operate. (1) Ambient sensor
IDI-3
COMBINATION METER SYSTEM
INSTRUMENTATION/DRIVER INFO
2. CHECK POWER SUPPLY AND GROUND CIRCUIT
Step Check Yes No
1 CHECK POWER SUPPLY FOR COMBINA- Is the voltage more than 10 V? Go to step 2. Check the harness
TION METER. for open or short
1)Remove the combination meter. nation meter.
2)Disconnect the combination meter harness
connector.
3)Turn the ignition switch to ON.
4)Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i11) No. 7 (+) -- Chassis ground (-):
2 CHECK POWER SUPPLY FOR COMBINA- Is the voltage more than 10 V? Go to step 3. Check the harness
TION METER. for open or short
Measure the voltage between combination between fuse and
meter connector and chassis ground. combination
Connector & terminal meter.
(i11) No. 10 (+) -- Chassis ground (-):
3 CHECK GROUND CIRCUIT OF COMBINA- Is the resistance less than 10 Except STi model: Repair the wiring
TION METER. ? Replace the com- harness.
1)Turn the ignition switch to OFF. bination meter
2)Measure the resistance of harness between printed circuit.
combination meter connector and chassis STi model:
ground. Replace the meter
Connector & terminal main assembly.
(i11) No. 6 -- Chassis ground:
3. CHECK VEHICLE SPEED SENSOR
Step Check Yes No
1 CHECK VEHICLE SPEED SENSOR. Is the voltage less than 1 V Except STi model: Go to step 2.
1)Lift-up the vehicle and support it with safety more than 5 V? Check the speed-
stands. ometer.
km/h (12 MPH). STi model:
Warning: Replace the meter
Be careful not to get caught in the running main assembly.
wheels.
4)Measure the voltage between combination
meter connector and chassis ground.
Connector & terminal
(i11) No. 2 (+) -- Chassis ground (-):
2 CHECK VEHICLE SPEED SENSOR POWER Is the voltage more than 10 V? Go to step 3. Check the harness
SUPPLY. for open or short
1)Turn the ignition switch to OFF. between ignition
2)Disconnect the vehicle speed sensor har- switch and vehicle
ness connector. speed sensor.
3)Turn the ignition switch to ON.
4)Measure the voltage between vehicle speed
sensor connector and engine ground.
Connector & terminal
(B17) No. 3 (+) -- Chassis ground (-):
IDI-4
COMBINATION METER SYSTEM
INSTRUMENTATION/DRIVER INFO
Step Check Yes No
3 CHECK HARNESS BETWEEN VEHICLE Is the resistance less than 10 Go to step 4. Repair the wiring
SPEED SENSOR AND ENGINE GROUND. ? harness.
1)Turn the ignition switch to OFF.
2)Measure the resistance between vehicle
speed sensor connector and engine ground.
Connector & terminal
(B17) No. 2 -- Chassis ground:
4 CHECK HARNESS BETWEEN VEHICLE Is the resistance less than 10 Replace the vehi- Repair the wiring
SPEED SENSOR AND COMBINATION ? cle speed sensor. harness.
METER.
1)Disconnect the connector from combination
meter.
2)Measure the resistance between vehicle
speed sensor harness connector and combi-
nation meter harness connector.
Connector & terminal
(B17) No. 1 -- (i11) No. 2:
4. CHECK TRANSMISSION CONTROL MODULE (TCM)
Step Check Yes No
1 CHECK TCM SIGNAL. Is the voltage less than 1 V Go to step 2. Check the TCM.
1)Lift-up the vehicle and support it with safety more than 5 V?
MPH).
Warning:
Be careful not to get caught in the running
wheels.
3)Measure the voltage between TCM connec-
tor and chassis ground.
Connector & terminal
Non-turbo model:
(B55) No. 13 (+) -- Chassis ground (-):
Turbo model:
(B56) No. 17 (+) -- Chassis ground (-):
2 CHECK HARNESS BETWEEN TCM AND Is the resistance less than 10 Check the speed Repair the wiring
COMBINATION METER. ? meter.
3)Measure the resistance between TCM har-
ness connector and combination meter har-
ness connector.
Connector & terminal
Non-turbo model:
(B55) No. 13 -- (i11) No. 2:
Turbo model:
(B56) No. 17 -- (i11) No. 2:
IDI-5
COMBINATION METER SYSTEM
INSTRUMENTATION/DRIVER INFO
5. CHECK ENGINE CONTROL MODULE (ECM)
Step Check Yes No
1 CHECK ECM SIGNAL. Is the voltage 0 14 V or Go to step 2. Check the ECM.
1)Start the engine. more? or
Non-turbo model: or
STi model:
2 CHECK HARNESS BETWEEN COMBINA- Is the resistance less than 10 Except STi model: Repair the wiring
TION METER AND ECM. ? Check the tachom- harness.
1)Turn the ignition switch to OFF. eter.
3)Measure the resistance between ECM har- STi model:
ness connector and combination meter har- Replace the meter
ness connector. main assembly.
Connector & terminal
Non-turbo model:
(B134) No. 10 -- (i11) No. 5:
Turbo model:
(B137) No. 9 -- (i11) No. 5:
STi model:
(B134) No. 23 -- (i11) No. 5:
6. CHECK FUEL LEVEL SENSOR
Step Check Yes No
1 CHECK FUEL LEVEL SENSOR. Is the resistance 0.5 to 2.5 Go to step 2. Replace the fuel
1)Remove the fuel level sensor. , or
2)Measure the resistance between fuel level
sensor terminals when setting the float to
FULL and EMPTY position.
Terminals
No. 2 -- No. 3:
2 CHECK FUEL SUB LEVEL SENSOR. Is the resistance 0.5 to 2.5 Go to step 3. Replace the fuel
1)Remove the fuel sub level sensor. , or
2)Measure the resistance between fuel sub
level sensor terminals when setting the float to
FULL and EMPTY position.
Terminals
No. 1 -- No. 2:
IDI-6
COMBINATION METER SYSTEM
INSTRUMENTATION/DRIVER INFO
Step Check Yes No
3 CHECK HARNESS BETWEEN FUEL SUB Is the resistance less than 10 Go to step 4. Repair the wiring
LEVEL SENSOR AND COMBINATION ? harness.
METER.
1)Disconnect the connector from combination
meter.
2)Measure the resistance between fuel sub
level sensor harness connector terminal and
combination meter harness connector termi-
nal.
Connector & terminal
(R59) No. 1 -- (i12) No. 2:
4 CHECK HARNESS BETWEEN FUEL LEVEL Is the resistance less than 10 Go to step 5. Repair the wiring
SENSOR AND FUEL SUB LEVEL SENSOR. ? harness.
Measure the resistance between fuel level
sensor harness connector terminal and fuel
sub level sensor harness connector terminal.
Connector & terminal
(R58) No. 3 -- (R59) No.2:
5 CHECK FUEL LEVEL SENSOR GROUND Is the resistance less than 10 Except STi model: Repair the wiring
CIRCUIT. ? Check the fuel harness.
Measure the resistance between fuel level gauge. STi
(R58) No. 2 -- Chassis ground: model:
Replace the meter
main assembly.
7. CHECK ENGINE COOLANT TEMPERATURE SENSOR
Step Check Yes No
1 CHECK ENGINE COOLANT TEMPERATURE Is the engine coolant tempera- Go to step 2. Replace the
SENSOR. ture sensor OK? engine coolant
Check the engine coolant temperature sensor. temperature sen-
or or
2 CHECK HARNESS BETWEEN ENGINE Is the resistance less than 10 Except STi model: Repair the wiring
COOLANT TEMPERATURE SENSOR AND ? Check the water harness.
COMBINATION METER. temperature
1)Turn the ignition switch to OFF. gauge.
coolant temperature sensor harness connector STi model:
and combination meter harness connector. Replace the meter
Connector & terminal main assembly.
(E8) No. 3 -- (i12) No. 9:
IDI-7
COMBINATION METER SYSTEM
INSTRUMENTATION/DRIVER INFO
8. CHECK OUTSIDE TEMPERATURE INDICATOR
Step Check Yes No
1 CHECK AIR CONDITIONER TYPE. Is the vehicle equipped with Go to step 6. Go to step 2.
auto A/C?
2 CHECK POWER SUPPLY FOR AMBIENT Is the voltage more than 4 V? Go to step 3. Replace the com-
SENSOR. bination meter
1)Turn the ignition switch to OFF. printed circuit.
2)Disconnect the connector from combination
meter.
3)Turn the ignition switch to ON.
4)Measure the voltage between combination
meter terminal and chassis ground.
Connector & terminal
(i10) No. 11 (+) -- Chassis ground (-):
3 CHECK HARNESS BETWEEN AMBIENT Is the resistance less than 10 Go to step 4. Repair the wiring
SENSOR AND COMBINATION METER. ? harness.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from ambient sen-
sor.
3)Measure the resistance between ambient
sensor harness connector terminal and combi-
nation meter harness connector terminal.
Connector & terminal
(F78) No. 1 -- (i10) No. 11:
(F78) No. 2 -- (i10) No. 8:
4 CHECK AMBIENT SENSOR. Is the ambient sensor OK? Go to step 5. Replace the ambi-
1)Remove the ambient sensor. ent sensor.
2)Check the ambient sensor.
5 CHECK OUTSIDE TEMPERATURE INDICA- Is the outside temperature indi- Repair the poor Replace the com-
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