Subaru 2002 IMPREZA Service Manual page 285

ENGINE MALFUNCTION INDICATOR LAMP (MIL)
ENGINE (DIAGNOSTICS)
Yes
Go to step 2.
Repair short circuit
in harness
between ECM and
test mode connec-
tor.
Step
CHECK TEST MODE CONNECTOR.
1)Disconnect the test mode connector.
2)Turn the ignition switch
to
ON.
No
System is in good
order.
NOTE:
MIL blinks at a c)
cle of 3 Hz whe
test mode connec
tor is connected.
Replace the ECM.
<Ref. to FU(D0HC
TURBO)-47,
Engine Control
Module.>
CHECK HARNESS BETWEEN ECM CON-
NECTOR AND ENGINE GROUNDING TER-
MINAL.
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
(8734) No. 74
-
Chassis ground:
Check
Does the MIL flash on and off?
Is the resistance less than 5
R?
EN(D0HC TURBO)-61