Mitsubishi 1992 3000GT, Service Manual

Page: 155 / 1308

MULTIPORT FUEL INJECTION Troubleshooting
Check engine/malfunc-
tion indicator lamp
WHEN USING THE CHECK ENGINE/MALFUNCTION
INDICATOR LAMP
AND 1995 MODELS>
(1) Using the special tool, Diagnostic Trouble Code Check
Harness, ground the diagnostic test mode control terminal
(terminal 1) of the data link connector.
(2) Turn the ignition switch to ON.
(3) Read the diagnostic output by blinking of the check engine/
malfunction indicator lamp.
(4) Repair the problem location, referring to the diagnostic
chart.
(5) Erase the diagnostic trouble code by the following proce-
dure.
1) Turn the ignition switch to OFF.
2) After removing the battery cable from the battery termi-
nals for 10 seconds or more, reconnect the cable.
3) With the engine warmed up, idle the engine for approx.
15 minutes.
4) Turn the ignition switch to ON and take a reading
of the diagnostic output to check if a normal code
is output.
result indication method when check engine/malfunction indicator lamp is used
Typical blinking, made while diagnostic trouble code is output
In case of diagnostic trouble code No.24
1.5 second 0.5 second
0.5 second
comes
on
Light
goes
out
n u m b e r
3 seconds
of tens
2
Blinking when condition is normal
0.5 second
Light
comes
on
Light
NOTE
Other diagnostic items are also output by lamp blinking corresponding to the same code number as when scan
tool is used.
DIAGNOSIS BY DIAGNOSTIC TEST MODE II
(INCREASED SENSITIVITY)
(1) Using the scan tool, changeover the diagnostic test mode
of the engine control module to DIAGNOSTIC TEST
MODE II (INCREASED SENSITIVITY).
(2) Road test the vehicle.
(3) Read the diagnostic trouble code in the same manner
as “READ OUT OF DIAGNOSTIC TROUBLE CODE” and
repair the malfunctioning part.
(4) Turn off the ignition switch once. Then turn it ON again.
NOTE
Turning OFF the ignition switch will cause the engine
control module to changeover the diagnostic test module
from the diagnostic test mode II to the diagnostic test
mode I.
(5) Erase the diagnostic trouble code.
TSB Revision