Subaru 2002 IMPREZA Service Manual page 443

E i N
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Check Step
CHECK CURRENT DATA.
1)Turn the ignition switch to OFF.
2)Remove the fuel filler cap.
3)lnstall the fuel filler cap.
4)Turn the ignition switch to ON.
5)Read the data of fuel tank pressure sensor
signal using Subaru Select Monitor or the
OBD-ll general scan tool.
NOTE:
Yes
*Subaru Select Monitor
Fordetailed 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-II General Scan Tool Instruction Manual.
CHECK POWER SUPPLY TO FUEL TANK
PRESSURE SENSOR.
Measure the voltage between ECM connector
and chassis ground.
Connector & terminal
(6135) No. 9 (+)
-
Chassis ground (-):
CHECK POWER SUPPLY TO FUEL TANK
PRESSURE SENSOR.
Measure the voltage between ECM connector
and chassis ground.
Connector i ? terminal
(B 135) No. 9 (+)
-
Chassis ground ( - ) :
s
the value less than -2.8 kPa
-21 .O mmHg, -0.827 inHg)?
CHECK INPUT SIGNAL FOR ECM.
Measure the voltage between ECM and chas-
sis ground.
Connector & terminal
(6135) No. 15 (+)
-
Chassis ground (-):
CHECK INPUT SIGNAL FOR ECM. (USING
SUBARU SELECT MONITOR.)
Read the data of fuel tank pressure sensor sig.
nal using Subaru Select Monitor.
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.>
IGo to step 2.
s the voltage more than 4.5 V? Go to step 4.
I
loes the voltage change more
han 4.5 V by shaking harness
ind connector of ECM while
nonitoring the value with volt-
ige meter?
s the voltage less than 0.2 V?
loes the value change more
han -2.8 kPa (-21 .O mmHg,
-
1.827 inHg) by shaking har-
less and connector of ECM
while monitoring the value with
Subaru Select Monitor?
Repair poor con-
tact in ECM con-
nector.
Go to step 6.
Repair poor con-
tact in ECM con-
nector.
~~
No
Even if MIL lights
JP, the circuit has
,eturned to a nor-
nal condition at
his time.
30 to step
3 .
;ontact with SOA
distributor) ser-
lice.
\JOTE:
nspection by DTL
s
required, be
:ause probablc
:ause is deteriora
ion of multipli
)arts.
30
to step 5.
30 to step
6 .
EN(D0HC TURBO)-219