Subaru IMPREZA 2002 Service Manual page 469

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Check
s the resistance more than 10
II?
Step
CHECK HARNESS BETWEEN ECM AND
FRONT OXYGEN (NF) SENSOR CONNEC-
TOR.
1)Turn the ignition switch to OFF.
2)Disconnect the connector from ECM.
3)Measure the resistance of harness between
ECM connector and chassis ground.
Connector & terminal
(8136) No. 6
-
Chassis ground:
( 8 136) No. 7
-
Chassis ground:
(8136) No. 19
-
Chassis ground:
( 8 136) No. 20
-
Chassis ground:
Yes
Replace the front
oxygen (NF) sen-
sor. <Ref. to
Front Oxygen
(A/
F) Sensor.>
FU( S0HC)-43,
No
Repair ground
short circuit in har-
ness between
ECM and front
oxygen (NF) sen-
sor connector.
EN(S0HC)-145