Subaru 2002 IMPREZA Service Manual page 573

I
DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
Step
! CHECK HARNESS BETWEEN ECM AND
MAIN FUSE BOX CONNECTOR.
1)Disconnect the connector from ECM.
2)Measure the resistance of harness between
ECM and chassis ground.
Connector & terminal
(8137) No. 10
-
Chassis ground:
I CHECK FUSE SBFQ.
Check Yes No
Is the resistance less than 10
R? short circuit in har-
Repair ground
ness between
ECM connector
and battery termi-
nal.
Is fuse blown? Replace the fuse. Repair harness
Go to step
3 .
and connector.
NOTE:
In this case, repai
the following:
Open circuit in
harness between
ECM and battery
Poor contact in
ECM connector
Poor contact in
battery terminal
EN(D0HC TURBO)-349