Subaru 2002 IMPREZA Service Manual page 572

DIAGNOSTIC PROCEDURE WITH DIAGNOSTIC TROUBLE CODE (DTC)
ENGINE (DIAGNOSTICS)
WIRING DIAGRAM:
Step Check Yes
1
CHECK INPUT SIGNAL FOR ECM.
1)Turn the ignition switch to OFF.
2)Measure the voltage between ECM and
Is the voltage more than 10 V? Repair poor con-
tact in ECM con-
nector.
EN1 171
No
Go to step 2.
chassis ground.
Connector & terminal
(8137) No. 10 (+)
-
Chassis ground (-):
EN(D0HC TURBO)-348