Mitsubishi 3000GT Service Manual page 1075

Ground
ETACS
With voltmeter
Data link
connector
With scan tool
Scan tool
EXTERIOR - Troubleshooting
TROUBLESHOOTING
INPUT SIGNAL <WINDSHIELD WIPER AND WASHER>
When using the scan tool [Multi-Use-Tester (MUT)] or
a voltmeter
Check whether or not the input signals from each switch
are being input to the ETACS unit.
(1) Connect the scan tool to the data link connector or connect
the voltmeter between the ETACS terminal and the ground
terminal.
(2) Check if the buzzer of the scan tool sounds or the needle
of the voltmeter moves when each switch is operated.
If the buzzer sounds or the needle moves, the input signals
are being input to the ETACS unit, so that switch can
be considered to be functioning normally. If not, the switch
or switch input circuit is faulty. Check the switch and the
switch input circuit.
Voltmeter
00002330
TSB Revision