Honda Acura NSX 1991 Service Manual page 787

Troubleshooting
I
roblem code 3-1: The PGM-FI system (TCINH, TCFS and TCFC signals).
NOTE: The PGM-FI ECU
signal have been input to it from the TCS control unit.
Remove the ALB 2.3 (20A) fuse
and Clock (7.5 A) fuse for more
than 10 seconds to reset the
PGM-FI ECU and TCS control unit.
Start the angina.
Check far TCS problem coda.
Y E S
Check for a PGM-FI problem code.
Are problem codas 35 (TCF
open or short-circuit) or 36 (TCFC
open or short-circuit) indicated.
(YES
Check the TCFS signal
TCFS signal check: (see
(see page 19-102).
Measure the voltage between the
TCS ECU No. 1 terminal and body
ground when the ignition switch
is turned on.
Y E S
outputs the TCINH signal to the TCS control unit when the correct TCFS signal and TCFC
Intermlttant failure.
Check for poor connections or
loose wires.
problem coda is indicated (saa
page 19-1031.
Perform the PGM-FI troublaahoot-
ing procedure if problem codes
when
other than 35 and 36 are in-
dicatad.
NO
Turn the ignition switch OFF.
(To page 19-101)
signal if no
View from terminal side.
20-P CONNECTOR