Honda Acura NSX 1991 Service Manual page 267

(From page 1 l-901
OFF.
Connect the ECU test harness
between the ECU and connector
(page 1 I-21).
ON.
Measure voltage between A23
terminals.
No. 1 injector: Al (+I terminal.
l
No. 2 injector: A3 (+) terminal.
l
No. 3 injector: A5 j+) terminal.
l
No. 4 injector: A2 (+) terminal.
l
No. 5 injector: A4 (+) terminal.
l
No. 6 injector: A6 (+I terminal.
l
Is there battery voltage ?
YES
Substitute a known-good ECU
and recheck. If symptom/indica-
tion goes away, replace the orig-
inal ECU.
(From page 1 l-90)
Is there battery
I
Test the of injector resistor
(page 1 I-96)
Is the injector resistor testing
O K ?
2P connector and
resistor.
A2 (+)
I
Repair open in the wire between
R e p a i r o p e n i n the
voltage?
resistor and the main
Y E S relay.
Replace injector resis-
tor.
Y E S
wire
w i r e be-
t h e i n j e c t o r