Read Diagnostic Trouble Code (Dtc) - Subaru LEGACY 2003 Service Manual

ENGINE (DIAGNOSTICS)

7. Read Diagnostic Trouble Code (DTC)

A: OPERATION
1. WITH SUBARU SELECT MONITOR
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Engine Control System} and press the [YES]
key.
3) Press the [YES] key after displayed the information of engine type.
4) On the «Engine Diagnosis» display screen, select the {Diagnostic Code(s) Display} and press the [YES]
key.
5) On the «Diagnostic Code(s) Display» display screen, select the {Current Diagnostic Code(s)} or {History
Diagnostic Code(s)} and press the [YES] key.
NOTE:
• For detailed operation procedure, refer to the SUBARU SELECT MONITOR OPERATION MANUAL.
• For detailed concerning diagnostic trouble codes, refer to the List of Diagnostic Trouble Code (DTC). <Ref.
to EN(H4SOw/oOBD)-57, LIST, List of Diagnostic Trouble Code (DTC).>
2. WITHOUT SUBARU SELECT MONITOR
1 CHECK STATUS OF CHECK ENGINE MAL-
FUNCTION INDICATOR LAMP (MIL).
1) Turn ignition switch to OFF.
2) Connect read memory connector. <Ref. to
EN(H4SOw/oOBD)-9, LOCATION, Electri-
cal Components Location.>
3) Turn ignition switch to ON.
Does the MIL come on?
2 CHECK DIAGNOSTIC TROUBLE CODE
(DTC).
Does the MIL indicate diagnostic trouble code
(DTC)?
READ DIAGNOSTIC TROUBLE CODE (DTC)
Step
EN(H4SOw/oOBD)-24
Value
MIL illuminates.
DTC is displayed.
Yes
Go to step 2. Check the follow-
ing and repair if
necessary.
NOTE:
• Open or short
circuit in engine
control module
power supply or
ground line
• Open or short
circuit in CHECK
ENGINE malfunc-
tion indicator lamp
Record diagnostic Complete read
trouble code diagnostic trouble
(DTC). Then turn code. Turn igni-
ignition switch to tion switch to OFF
OFF, disconnect and disconnect
read memory con- read memory con-
nector. nector.
No