Subaru 2002 IMPREZA Service Manual page 479

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
s the voltage more than 10 V?
Ioes the voltage change more
han 10 V by shaking harness
ind connector of ECM while
nonitoring the value with volt-
kge meter?
Step
CHECK THROTTLE CABLE.
Repair battery
short circuit in har-
ness between
ECM and idle air
control solenoid
valve connector.
After repair,
replace the ECM.
<Ref. to FU(D0HC
Engine Control
Module.>
Repair battery
short circuit in har-
ness between
ECM and idle air
control solenoid
valve connector.
After repair,
replace the ECM.
<Ref. to FU(D0HC
Engine Control
Module.>
TURBO)-47,
TU RB0)-47,
!
CHECK OUTPUT SIGNAL FROM ECM.
1)Turn the ignition switch to ON.
2)Measure the voltage between ECM and
chassis ground.
Connector & terminal
(6136) No. 10 (+)
-
Chassis ground ( - ) :
I
CHECK OUTPUT SIGNAL FROM ECM.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from idle air con-
trol solenoid valve.
3)Turn the ignition switch to ON.
4)Measure the voltage between ECM and
chassis ground.
Connector & terminal
(6 136) No. 10 (+)
-
Chassis ground ( - ) :
I CHECK OUTPUT SIGNAL FROM ECM.
Measure the voltage between ECM and chas-
sis ground.
Connector & terminal
(6136) No. 10 (+)
-
Chassis ground (-):
'lay for adjustment?
No
Adjust throttle
:able. <Ref. to
TION, Accelerator
Control Cable.>
Go to step
4.
SP-7, INSTALLA-
Replace the idle
air control solenoic
valve <Ref. to
FU(D0HC
TURBO)-36, Idle
Air Control Sole-
noid Valve.> and
ECM <Ref. to
FU(D0HC
Engine Control
Module.>.
Contact with SOA
(distributor) ser-
vice.
NOTE:
lnsepction by DTL
is
required, be
cause probablc
cause is deteriora
tion of multiplf
parts.
TURBO)-47,
EN(D0HC TURBO)-255