Subaru IMPREZA 2002 Service Manual page 532

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENG IN E lDl AG NOSTICS)
Check
s the resistance less than 1
3?
s
the resistance more than
5 0 0
kQ?
s
the resistance less than 1
2?
s the resistance less than 1
2?
s the resistance more than
500
kR?
Step
CHECK HARNESS BETWEEN ECM AND
COUPLING CONNECTOR IN REAR WIRING
HARNESS.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from ECM.
3)Measure the resistance of harness between
ECM and rear wiring harness connector.
Connector & terminal
(8136) NO. 16
-
(R15) NO. 11:
Yes No
Go to step
8.
Repair harness
and connector.
NOTE:
In this case, repair
the following:
Open circuit
in
harness between
ECM and rear wir-
ing harness con-
nector (R57)
Poor contact in
coupling connector
Poor contact in
joint connector
(B122)
Repair ground
short circuit in har-
ness between
ECM and rear wir-
ing harness con-
nector (R57).
P98)
Go to step 9.
Go to step
10. Repair open circuit
in fuel tank cord.
Go to step 11. Repair open circuit
in fuel tank cord.
Go to step 12.
Repair ground
short circuit in fuel
tank cord.
CHECK HARNESS BETWEEN ECM AND
COUPLING CONNECTOR IN REAR WIRING
HARNESS.
Measure the resistance of harness between
rear wiring harness connector and chassis
ground.
'Connector & terminal
(R15)
No.
11
-
Chassis ground:
CHECK FUEL TANK CORD.
1)Disconnect the connector from fuel tank
pressure sensor.
2)Measure the resistance of fuel tank cord.
Connector & terminal
(R57) NO. 9
-
(R47)
NO.
3:
CHECK FUEL TANK CORD.
Measure the resistance of fuel tank cord.
Connector & terminal
(R57) NO. 11
-
(R47) NO. 2:
CHECK FUEL TANK CORD.
Measure the resistance of harness between
fuel tank pressure sensor connector and chas-
sis ground.
Connector
&
terminal
CHECK POOR CONTACT.
Check poor contact in fuel tank pressure sen-
sor connector.
(R47) No, 1
-
Chassis ground:
I I
connector. EC(S0HC)-1 0,
Fuel Tank Pres-
sure Sensor.>
EN(S0HC)-208