Honda Acura NSX 1991 Service Manual page 455

Self-diagnosis D indicator light
Disconnect the 26P connector
from the control unit.
Turn the ignition switch ON
Measure the voltage between the
A9 (GRN) and A25 (BRN/WHT)
terminals.
Y E S
Check for loose control unit con-
nectors. If necessary, substitute
a known-good control unit and
recheck.
Repair open or short in
A9 terminal and the
gauge assembly.
NOTE: View from terminal side.
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