Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 1428

GENERAL -
How to Use Troubleshooting/Inspection Service Points
MUT-
MB991529
INPUT SIGNAL CHECK <SWS>
WHEN USING THE MUT-II
1. Connect the MUT-II to the diagnosis connector and erase
the diagnosis code.
Caution
Turn the ignition switch to "LOCK"(OFF) position
before connecting or disconnecting the MUT-II.
2. If the MUT-II buzzer sounds once when each switch is
operated (ON/OFF), the input signal for that switch circuit
system is normal.
WHEN USING A VOLTMETER
1. Use the special tool to connect the ETACS terminal
(terminal 9) and the earth terminals (terminals 4 and 5)
of the diagnosis connector to the voltage meter.
2. If the needle of the voltage meter flickers once when
each switch is operated (ON/OFF), the input signal for
that switch circuit system is normal.
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