DIAGNOSTIC PROCEDURE
WITH
DIAGNOSTIC TROUBLE CODE (DTC)
ENG I
NE (DIAGNOSTICS)
Step
CHECK CURRENT DATA.
1)Start the engine.
2)Read the data of intake air temperature sen-
sor signal using Subaru Select Monitor or the
OBD-ll general scan tool.
NOTE:
Gubaru 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 procedure, refer to the
OBD-II General Scan Tool Instruction Manual.
CHECK HARNESS BETWEEN MASS AIR
FLOW AND INTAKE AIR TEMPERATURE
SENSOR AND ECM CONNECTOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from mass air flow
and intake air temperature sensor.
3)Turn the ignition switch to ON.
4)Read the data
of intake air temperature sen-
sor signal using Subaru Select Monitor or the
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 procedure, refer to the
OBD-II General Scan Tool Instruction Manual.
Check
s
the value greater than 55°C
131 OF)?
s
the value less than -36°C (-
)7”F)?
Yes
30
to step
2.
3eplace the mass
air flow and intake
air temperature
sensor. <Ref. to
‘U( DOHC
TURBO)-34, Mass
4ir Flow and
ntake Air Temper-
ature Sensor.>
No
3epair poor con-
3Ct.
JOTE:
n
this case, repai
he following:
Poor contact
nass air flow and
itake air tempera.
ure sensor
Poor contact in
iCM
Poor contact in
Ynt connector
3epair ground
ihort circuit in har.
less between
nass air flow and
itake air tempera.
ure sensor and
iCM connector.
EN(D0HC
TURBO)-121
To Next Page
Loading...
