Acura NSX 1991 Manual page 770

Main Menu
NOTE: Be sure the battery is sufficiently charged
(see page 23-68).
Connect the Sun VAT-40 (see
page 23-102) and turn the selec-
tor switch to position 1 (star-
ting).
Start the engine and let it idle un-
til it reaches normal operating
temperature.
Raise the engine speed to 2,000
rpm and hold it there.
Is the voltage over 15.1 V?
Release the accelerator pedal
and let the engine idle.
Make sure all accessories are
turned off. Turn the selector
switch to position 2 (charging).
Remove the inductive
and zero the ammeter.
Attach the inductive pick-up to
the B terminal wire of the
alternator with its arrow pointing
away from the terminal.
Raise the engine speed to 2,000
rpm and hold it there.
Is the voltage less than 13.9 V?
(To page 23-104)
Table of Contents
pick-up
Replace the voltage regulator.
Test the battery (see page
23-68).