Subaru 2002 IMPREZA Service Manual page 399

and connector.
NOTE:
In this case, rep?
the following:
Open circuit in
harness between
ECM and fuel
injector connect0
Poor contact in
coupling connect
Replace the faulty
fuel injector. <Ref.
to FU(D0HC
TURBO)-37, Fuel
Injector.>
Go to step 6 .
1
CHECK OUTPUT SIGNAL FROM ECM.
1)Turn the ignition switch to ON.
2)Measure the voltage between ECM connec-
tor and chassis ground on faulty cylinders.
Connector & terminal
#1 (6137)
No.
1
(+)
-
Chassis
ground (-):
#2 (6136)
No,
6 (+)
-
Chassis
ground ( - ) :
#3 (8136) No. 5 (+)
-
Chassis
ground (-):
#4 (6136) No. 4 (+)
-
Chassis
around
(-1:
Yes
Step Check
No
CHECK ANY OTHER DTC ON DISPLAY.
Does the Subaru Select Moni-
tor or OBD-II general scan tool
indicate DTC P0106, P0107,
PO1 08, PO1 17, PO1 18 or
PO1 25?
3epair ground
;hort circuit in ha1
less between fue
njector and ECM
:onnector.
Inspect DTC
P0106, P0107,
P0108, P0117,
PO1 18 or PO1 25
using "List of Diag.
nostic Trouble
Go to step 2.
Go to step 5.
I s the voltage more than 10 V?
;o to step 3.
30 to step 4.
Repair harness
Code (DTC)".
<Ref. to EN(D0HC
TURBO)-80, List
of Diagnostic Trou,
ble Code (DTC).>
NOTE:
In this case, it i!
not necessary t c
inspect DT(
P0301, PO302
PO303 and PO304
Go to step 7.
I
. ,
CHECK HARNESS BETWEEN FUEL INJEC-
1)Turn the ignition switch to OFF.
2)Disconnect the connector from fuel injector
on faulty cylinders.
3)Disconnect the connector from ECM.
4)Measure the voltage between ECM connec-
tor and engine ground on faulty cylinders.
TOR AND ECM CONNECTOR.
Connector & terminal
#1 (€5)
No. 1 (+)
-
Engine ground ( - ) :
#2 (€16) No. 1 (+)
-
Engine ground (-):
#3 (E6)
No.
1 (+)
-
Engine ground ( - ) :
#4 (El 7)
No.
1 (+)
-
Engine ground ( - ) :
CHECK HARNESS BETWEEN FUEL INJEC-
TOR AND ECM CONNECTOR.
Measure the resistance of harness connector
between ECM connector and fuel injector on
faulty cylinders.
I
Connector & terminal
#1 (6137) NO. 1 -(E5) NO. 1:
#2 (8136) NO. 6
-
(E16) NO. 1:
#3 (8136) NO. 5
-
(E6) NO. 1:
#4 (6136) NO. 4
-
(E17)
NO.
1:
5
CHECK FUEL INJECTOR.
Measure the resistance between fuel injector
terminals on faulty cylinder.
Terminals
NO.
1
-
NO.
2:
EN(D0HC TURBO)-175
Is the resistance less than 10
R?
I s
the resistance less than 1
Q?
I s
the resistance between 5
and 20 R?