DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENG
I
NE
(DIAGNOSTICS)
Step
Check
CONNECT SUBARU SELECT MONITOR
OR Is
the value equal to or more
THE OBD-ll GENERAL SCAN TOOL, AND than 1.3 g/sec (0.172 Ib/min) or
READ DATA.
0.3
V
and equal to or less than
1)Turn the ignition switch
to
OFF. 240 g/sec (32 Ib/min) or 4.58
?
Yes
Even
if
MIL lights
up, the circuit has
returned to a nor-
mal condition at
this time.
2)Connect the Subaru Select Monitor or the
OBD-ll general scan tool
to data link connec-
tor.
3)Turn the ignition switch
to
ON and Subaru
Select Monitor or the OBD-ll general scan tool
switch to ON.
4)Start the engine.
5)
Read the data of mass air flow sensor signal
using Subaru Select Monitor or OBD-ll general
scan
tool.
NOTE:
*Subaru Select Monitor
For detailed operation procedure, refer
to the
“READ CURRENT DATA FOR ENGINE”. <Ref.
to EN(D0HC TURBO)-38, Subaru Select Mon-
itor.>
*OBD-ll general scan tool
For detailed operation procedures, refer
to
the
OBD-ll General Scan Tool Instruction Manual.
CHECK HARNESS BETWEEN ECM AND
MASS AIR
FLOW
SENSOR CONNECTOR.
1)Turn the ignition switch
to
OFF and Subaru
Select Monitor or the OBD-ll general scan
tool
switch to OFF.
2)Disconnect the connector from mass air flow
sensor.
3)Turn the ignition switch
to ON and Subaru
Select Monitor or the OBD-ll general scan tool
switch
to
ON.
4)Read the data of mass air flow sensor signal
using Subaru select monitor or OBD-ll general
scan
tool.
NOTE:
*Subaru Select Monitor
For detailed operation procedure, refer to the
“READ CURRENT DATA FOR ENGINE. <Ref.
to
EN(D0HC TURBO)-38, Subaru Select Mon,
itor.>
*OBD-II general scan
tool
For detailed operation procedures, refer to the
OBD-ll
General Scan Tool Instruction Manual.
s
the value more than 240 g/
iec (32 Ib/min) or 4.58
V
in
unction mode F06?
Repair battery
short circuit in har,
ness between
mass air flow sen-
sor and ECM con-
nector. After
repair, replace the
ECM.
No
o
to step
2.
ieplace the mass
.ir flow sensor.
EN(D0HC
TURBO)-107
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