Subaru XT 1988 Service Manual page 337

2-7 FUEL INJECTION SYSTEM
D-CHECK MODE
Start engine.
•
Warm up engine.
+
Turn ignition switch OFF.
)
+
Connect test mode connector.
+
Turn ignition switch ON (engine offl. )
j
NO
Check if CHECK ENG INE light turns
A
(See page 52.)
on.
• YES
Inaudible or
I
Check fuel pump and associated
Check fuel pump noise.
l
continuously audible
systems.
+
Pump operates intermittently.
,
-
- Depress accelerator pedal completely.
Return it to the half-throttle position
and hold it there for two seconds.
Then release the pedal completely. r
Turn ignition switch OFF.
\
+
+
Start engine.
)
Disconnect test mode connector.
J
NO
+
I Check if CHECK ENGINE light goes
lOut.
Was trouble code present in read
YES
• YES
memory mode?
Race engine with throttle fully
I
!
NO
opened.
t
System of self-diagnosis is OK.
Drive at speed greater than 8 km/h
~
(5 MPH) for at least one minute.
+
When other trouble is still present,
I Warm up engine above 1,500 rpm.
see item "General Troubleshooting
Table".
•
Check if CHECK ENGINE light blinks.
l
YES
~
J
NO
Check if affected part has already
YES
C
NO
I Check if CHECK ENGINE light been corrected.
I illuminates.
• YES
J
NO
I Confirm trouble code.
* Check harness and connector of
+
affected trouble code.
*
Check trouble codes sequentially.
(See page 56.)
*: When more than one trouble code is outputted, sequentially check the trouble codes, starting with the smallest code number.
After correcting each trouble, reconduct D-check and make sure the corresponding trouble code is no longer present
If another trouble code is outputted, carry out troubleshooting again.
54