Honda Acura NSX 1991 Service Manual page 257

(From page 1 I-80)
Y E S
Clutch switch signal is OK.
Turn the ignition switch OFF.
Disconnect the 3P connector
from the clutch switch.
Turn the ignition switch ON.
Measure voltage between C7 W
terminal and A26 (-1 terminal.
I
N O
Disconnect "C" connector from
engine wire harness only, not the
ECU.
N O
Substitute a known-good ECU
and recheck. If prescribed
voltage is now available, replace
the original ECU.
R e p l a c e t h e c l u t c h
switch.
Repair short in PNK
w i r e b e t w e e n E C U
switch.
11-81