EN(H4DOTC)(diag)-93
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
ENGINE (DIAGNOSTICS)
Step
Check
Yes
No
1
CONNECT SUBARU SELECT MONITOR OR
THE GENERAL SCAN TOOL, AND READ
THE DATA.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to the
data link connector.
3) Turn the ignition switch to ON, and the Sub-
aru Select Monitor power switch to ON.
4) Start and idle the engine.
5) Read the mass air flow sensor voltage
using Subaru Select Monitor or general scan
tool.
NOTE:
• Subaru Select Monitor
For detailed operation procedure, refer to
“READ CURRENT DATA FOR ENGINE”. <Ref.
to EN(H4DOTC)(diag)-24, Subaru Select Mon-
itor.>
• General scan tool
For detailed operation procedure, refer to the
general scan tool operation manual.
Is the voltage 0.2 — 4.7 V?
Even if the mal-
function indicator
light illuminates,
the circuit has
returned to a nor-
mal condition at
this time.Tempo-
rary poor contact
of connector or
harness may be
the cause. Repair
the harness or
connector in mass
air flow sensor.
NOTE:
In this case, repair
the following item:
• Open or ground
short circuit of har-
ness between mass
air flow sensor and
ECM connector
• Poor contact of
mass air flow sen-
sor or ECM con-
nector
Go to step
2
.
2
CHECK INPUT SIGNAL OF ECM.
Measure the voltage between ECM connector
and chassis ground while engine is idling.
Connector & terminal
(B136) No. 23 (+) — Chassis ground (–):
Is the voltage more than 0.2 V? Go to step
4
.
Go to step
3
.
3
CHECK INPUT SIGNAL FOR ECM (USING
SUBARU SELECT MONITOR).
Measure the voltage between ECM connector
and chassis ground while engine is idling.
Does the voltage change by
shaking the harness and con-
nector of the ECM while moni-
toring the value with Subaru
Select Monitor?
Repair the poor
contact of ECM
connector.
Replace and
inspect again
because ECM may
be faulty.
4
CHECK POWER SUPPLY TO MASS AIR
FLOW SENSOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connector from mass air
flow sensor.
3) Turn the ignition switch to ON.
4) Measure the voltage between mass air flow
sensor connector and chassis ground.
Connector & terminal
(B3) No. 1 (+) — Chassis ground (–):
Is the voltage more than 10 V? Go to step
5
.
Repair the open
circuit between
mass air flow sen-
sor and main relay.
5
CHECK HARNESS BETWEEN ECM AND
MASS AIR FLOW SENSOR CONNECTOR.
1) Turn the ignition switch to OFF.
2) Disconnect the connectors from ECM.
3) Measure the resistance of harness
between ECM and mass air flow sensor con-
nector.
Connector & terminal
(B136) No. 23 — (B3) No. 3:
(B136) No. 31 — (B3) No. 2:
(B136) No. 35 — (B3) No. 5:
Is the resistance less than 1
Ω
?
Go to step
6
.
Repair the open
circuit between
ECM and mass air
flow sensor con-
nector.
asieps_tobira.book 93 ページ 2009年10月26日 月曜日 午前9時16分
Содержание 2006 Legacy
Страница 6: ...RECOMMENDED MATERIALS RM Page 1 Recommended Materials 2 asieps_tobira book 1...
Страница 17: ...NT 12 Note NOTE asieps_tobira book 12...
Страница 18: ...IDENTIFICATION ID Page 1 Identification 2 asieps_tobira book 1...
Страница 20: ...HOW TO USE THIS MANUALS HU Page 1 How to Use This Manuals 2 asieps_tobira book 1...
Страница 24: ...NOTE NT Page 1 Note 2 asieps_tobira book 1...
Страница 32: ...SPC 16 OUTBACK SPECIFICATIONS asieps_tobira book 16...
Страница 33: ...PRECAUTION PC Page 1 Precaution 2 asieps_tobira book 1...
Страница 38: ...RM 6 Recommended Materials RECOMMENDED MATERIALS asieps_tobira book 6...
Страница 39: ...PRE DELIVERY INSPECTION PI Page 1 Pre delivery Inspection 2 asieps_tobira book 1...
Страница 68: ...SPECIFICATIONS SPC Page 1 LEGACY 2 2 OUTBACK 9 asieps_tobira book 1...
Страница 673: ...GD H4SO 236 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION asieps_tobira book 236...
Страница 675: ...asieps_tobira book 2...
Страница 676: ...FUEL INJECTION FUEL SYSTEMS FU H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 699: ...FU H4SO 60 Fuel System Trouble in General FUEL INJECTION FUEL SYSTEMS asieps_tobira book 60...
Страница 749: ...IN H4SO 10 Resonator Chamber INTAKE INDUCTION asieps_tobira book 10...
Страница 867: ...SPEED CONTROL SYSTEMS SP H4SO Page 1 General Description 2 2 Accelerator Pedal 3 asieps_tobira book 1...
Страница 871: ...SP H4SO 4 Accelerator Pedal SPEED CONTROL SYSTEMS asieps_tobira book 4...
Страница 902: ...LUBRICATION LU H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 904: ...INTAKE INDUCTION IN H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 906: ...COOLING CO H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 1233: ...EN H4SO U5 diag 328 General Diagnostic Table ENGINE DIAGNOSTICS asieps_tobira book 328...
Страница 1466: ...GD H4SO U5 240 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION asieps_tobira book 240...
Страница 1468: ...asieps_tobira book 2...
Страница 1478: ...MECHANICAL ME H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 1480: ...SPEED CONTROL SYSTEMS SP H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 1482: ...EXHAUST EX H4SO U5 Page 1 General Description 2 asieps_tobira book 1...
Страница 1575: ...EN H4DOTC diag 322 General Diagnostic Table ENGINE DIAGNOSTICS asieps_tobira book 322...
Страница 1856: ...EX H4DOTC 14 Muffler EXHAUST asieps_tobira book 14...
Страница 1897: ...FU H4DOTC 64 Fuel System Trouble in General FUEL INJECTION FUEL SYSTEMS asieps_tobira book 64...
Страница 2178: ...GD H4DOTC 256 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION asieps_tobira book 256...
Страница 2180: ...asieps_tobira book 2...
Страница 2192: ...STARTING CHARGING SYSTEMS SC H4DOTC Page 1 General Description 2 asieps_tobira book 1...
Страница 2327: ...LU H4DOTC 26 Engine Lubrication System Trouble in General LUBRICATION asieps_tobira book 26...
Страница 2328: ...SPEED CONTROL SYSTEMS SP H4DOTC Page 1 General Description 2 asieps_tobira book 1...
Страница 2341: ...CO H6DO 26 Engine Cooling System Trouble in General COOLING asieps_tobira book 26...
Страница 2366: ...EC H6DO 16 PCV Valve EMISSION CONTROL AUX EMISSION CONTROL DEVICES asieps_tobira book 16...
Страница 2742: ...EX H6DO 10 Muffler EXHAUST asieps_tobira book 10...
Страница 2788: ...FU H6DO 60 Fuel System Trouble in General FUEL INJECTION FUEL SYSTEMS asieps_tobira book 60...
Страница 3032: ...GD H6DO 234 Diagnostic Trouble Code DTC Detecting Criteria GENERAL DESCRIPTION asieps_tobira book 234...
Страница 3034: ...asieps_tobira book 2...
Страница 3049: ...IG H6DO 8 Ignition Coil IGNITION asieps_tobira book 8...
Страница 3050: ...STARTING CHARGING SYSTEMS SC H6DO Page 1 General Description 2 asieps_tobira book 1...
Страница 3054: ...IN H6DO 10 Resonator Chamber INTAKE INDUCTION asieps_tobira book 10...
Страница 3077: ...SPEED CONTROL SYSTEMS SP H6DO Page 1 General Description 2 asieps_tobira book 1...
Страница 3148: ...EXHAUST EX H6DO Page 1 General Description 2 2 Front Exhaust Pipe 4 3 Rear Exhaust Pipe 7 4 Muffler 9 asieps_tobira book 1...
Страница 3170: ...IGNITION IG H6DO Page 1 General Description 2 2 Spark Plug 4 3 Ignition Coil 7 asieps_tobira book 1...
Страница 3277: ...4AT 124 Transmission Control Device AUTOMATIC TRANSMISSION asieps_tobira book 124...
Страница 3384: ...5AT 106 Transmission Control Device AUTOMATIC TRANSMISSION asieps_tobira book 106...
Страница 3500: ...4AT diag 106 Diagnostics with Phenomenon AUTOMATIC TRANSMISSION DIAGNOSTICS asieps_tobira book 106...
Страница 3632: ...5AT diag 142 General Diagnostic Table AUTOMATIC TRANSMISSION DIAGNOSTICS asieps_tobira book 142...
Страница 3675: ...asieps_tobira book 2...
Страница 3684: ...CS 7 AT Shift Lock Control System CONTROL SYSTEMS CS 00514 1 CS 00515 2 3 CS 00270 CS 00359 7 4 CS 00543 6 5 asieps_tobira book 7...
Страница 3723: ...5MT 80 General Diagnostic Table MANUAL TRANSMISSION AND DIFFERENTIAL asieps_tobira book 80...
Страница 3798: ...CS 42 General Diagnostic Table CONTROL SYSTEMS asieps_tobira book 42...
Страница 3926: ...BR 9 General Description BRAKE 6 BRAKE BOOSTER 1 Brake booster BR 00443 1 asieps_tobira book 9...
Страница 3986: ...FS 26 General Diagnostic Table FRONT SUSPENSION asieps_tobira book 26...
Страница 4000: ...PB 10 General Diagnostic Table PARKING BRAKE asieps_tobira book 10...
Страница 4063: ...asieps_tobira book 2...
Страница 4065: ...asieps_tobira book 4...
Страница 4091: ...RS 24 General Diagnostic Table REAR SUSPENSION asieps_tobira book 24...
Страница 4139: ...TC 14 Transfer Clutch Pressure Test TRANSFER CASE asieps_tobira book 14...
Страница 4158: ...VDC diag 118 General Diagnostic Table VEHICLE DYNAMICS CONTROL VDC DIAGNOSTICS asieps_tobira book 118...
Страница 4298: ...WT 14 General Diagnostic Table WHEEL AND TIRE SYSTEM asieps_tobira book 14...