Alternator/Regulator Test - Acura NSX 1997 Service Manual

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Charging System
Troubleshooting (cont'd)

Alternator/Regulator Test

Use the SUN VAT-40 (or equivalent) tester.
POSITIVE
INDUCTIVE
CABLE (RED)
PICK-UP
(GRN)
1. Attach the positive tester cable and the voltmeter
positive lead to the jump start terminal in the
engine compartment fuse/relay box.
VOLTMETER
POSITIVE LEAD
ENGINE COMPARTMENT
FUSE/RELAY BOX
Table of Contents
FULL FIELD
LEAD (BLU)
LOAD ADJUSTER
(CARBON PILE)
VOLTMETER
NEGATIVE
POSITIVE
CABLE (BLK)
LEAD (RED)
POSITIVE CABLE
2. Attach the negative tester cable and the voltmeter
negative lead to the top of the intake manifold.
VOLTMETER
NEGATIVE LEAD
VOLTMETER
NEGATIVE
LEAD (BLK)
3. Attach the inductive pick-up to the B terminal wire
of the alternator with its arrow pointing away from
the terminal.
NOTE: The arrow must point away from the B
terminal.
INDUCTIVE PICK-UP
JUMP
START
TERMINAL
NEGATIVE CABLE
NEGATIVE MARK
ALTERNATOR
B TERMINAL
ARROW
ALTERNATOR