Mitsubishi 3000GT Service Manual page 484

17-24
ENGINE AND EMISSION CONTROL
When using the MUT
<From 1994 models>
Control switch
ON-BOARD DIAGNOSTIC CHECKING
On-board diagnostic checking is performed when there has
been an automatic cancellation, without cancel switch opera-
tion.
NOTE
Even when the ignition key is placed in the OFF position,
all diagnostic trouble codes are stored and retained, until
the battery cable is disconnected, to make sure that the prob-
lems encountered in the past can be checked.
WHEN USING THE SCAN TOOL [MULTI-USE TESTER
(MUT) <Up to 1993 models> OR MUT-II <All models>]
(1) Connect the scan tool to the data-link connector to read
out the diagnostic trouble codes
When connecting the scan tool to a vehicle up to 1993
models, use the adapter harness supplied together.
Caution
Turn off the ignition switch beforehand whenever the
scan tool is connected or disconnected.
(2) Refer to the diagnostic chart and repair the defective
point.
(3) Clear the diagnostic trouble codes by the following proce-
dure.
1) Place the ignition switch in the ON position.
2) With the SET switch in the ON state, set the main
switch to ON. In less than 1.0 second thereafter, set
the RESUME switch to ON.
3) With the SET switch in the ON state again, keep
the stop light switch in the ON state for more than
RESUME
switch: Oh
5 seconds.
4) Temporarily place the main switch in the OFF position
to let the control unit escape from the input check
mode. Then place the main switch in the ON position
again.
5) Check the diagnostic trouble code to verify that a
normal code is output.
00002430
TSB Revision