Waveform Check Using An Analyzer - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

16-8
(14)If the voltage reading conforms to the value
in the voltage regulation, then the voltage
regulator is operating normally.
If the voltage is not within the standard value,
there is a malfunction of the voltage regulator
or of the alternator.
(15)After the test, lower the engine speed to the
idle speed.
(16)Turn the ignition switch to the "LOCK" (OFF)
position.
Voltage Regulation Table
Standard value:
Inspection terminal
Terminal "S"
Special
patterns
Alternator
pickup
B terminal
STANDARD WAVEFORM
Observation Conditions
FUNCTION
PATTERN HEIGHT
VARIABLE knob
PATTERN SELECTOR
Engine speed
ENGINE ELECTRICAL -
Voltage regulator ambient temperature _C
- 20
20
60
80

WAVEFORM CHECK USING AN ANALYZER

Analyzer
MEASUREMENT METHOD
Connect the analyzer special patterns pick-up to the alternator
B terminal.
SPECIAL PATTERNS
VARIABLE
Adjust while viewing the wave-
form.
RASTER
Curb idle speed
Charging System
(17)Remove the tachometer or the MUT-II.
(18)Disconnect the negative battery cable.
(19)Disconnect the ammeter and voltmeter.
(20)Connect the alternator output wire to the
alternator "B" terminal.
(21)Remove the special tool, and return the
connector to the original condition.
(22)Connect the negative battery cable.
Voltage V
14.2 - 15.4
13.9 - 14.9
13.4 - 14.6
13.1 - 14.5