Mitsubishi 3000GT Service Manual page 486

17-26
ENGINE AND EMISSION CONTROL
Normal code
NOTE
three latest code numbers are displayed in the order
of lowest code number first.
2. Even if the problem represented by the code number
marked * occurs during cruise control operation, the cruise
control mode will not be canceled.
3. When the system is normal, the diagnostic trouble code
is displayed as described below.
1) If a scan tool is used:
"No abnormality" will be displayed.
2) If a voltmeter is used:
Continuous ON/OFF signals will be displayed at 0.5
second intervals. (Refer to the illustration at the left.)
INPUT CHECKING
Input checks should be made when the cruise control system
cannot be set and when it is necessary to check (when a
malfunction related to the cruise control system occurs) wheth-
er or not the input signals are normal.
NOTE
1. If inspection of on-board diagnostic is necessary, confirm
diagnostic trouble code first and conduct input check.
2. Input check can be conducted by set operations. On-board
diagnostic terminal outputs display patterns.
3. Display codes are displayed only if the circuit is normal
according to the conditions shown in the table on the
next page.
Perform checks using the following procedures.
(1) Connect a scan tool or a voltmeter to the data link connec-
tor.
NOTE
Connect a voltmeter using the same procedure as for
inspection of diagnostic output.
(2) Calling up a code
1) Set the ignition switch to ON.
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. Then the input check
results can be displayed.
0 0 0 0 2 4 3 1
(3) Reading a code'
1) Perform the individual input operations according to
the input check table and read the codes.
NOTE
1.
2. If no code is output by performing any of the
When two or more input operations are performed
simultaneously, all the associated code numbers
are output in ascending order.
input operations, the control unit power supply
circuit or SET and RESUME switches are probably
defective.
Check the check tables 1 and 2 (P.17-12, 13).
I