Mitsubishi 1989-1993 GALANT Service Manual page 505

AUTO-CRUISE CONTROL SYSTEM - Troubleshooting
With scan tool
After the diagnostic trouble codes in the memory are
erased, if (when the power supply of the electronic control
unit is switched ON once again) the power supply of the
electronic control unit is normal, the on-board diagnostic
output code display will be as below, regardless of
whether the system condition is normal or not.
"NORMAL!!" will be displayed.
Continuous ON/OFF signals will be displayed at 0.5
second intervals.
(Refer to the figure at the left.)
INPUT CHECKING
Input checks should be made when the auto-cruise control
system cannot be set and when it is necessary to check
(when a malfunction related to the auto-cruise contra! system
occurs) whether 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 ac-
cording to the conditions shown in the table on the next
WITH SCAN TOOL
(1) The setting of the scan tool is the same as for the on-board
diagnostic check.
(2) Turn the ignition switch to ON and switch OFF the main
switch.
(3) Select the cruise control system from the scan tool's menu.
then, within one second, switch ON the resume switch.
(5) Select the diagnostic trouble code from the scan tool's
menu.
(6) Perform each input operation according to the input check
table (on the next page) and read the codes.
(7) Switch the main switch OFF.
WITH VOLTMETER
(1) The voltmeter is set in the same way as for the on-board
diagnostic check.
(2) Turn the ignition switch to ON and switch OFF the main
switch.
(3) With the set switch ON, switch ON the main switch, and
then, within one second, switch ON the resume switch.
(4) Perform each input operation according to the input check
table (on the next page) and read the codes.
(5) Switch the main switch OFF.
TSB Revision