Honda Acura NSX 1991 Service Manual page 796

Problem code 3-4: The 5V standard voltage WREFI.
Remove the ALB 2.3 (20A) fuse
for more than 3 seconds to reset
TCS control unit.
Start the engine
Is problem code 3-4 indicated
Y E S
Measure the voltage between the
TCS control unit No. 13 terminal
and body ground.
I
Is there approximately 5 V?
Check for poor connections or
Turn the ignition switch OFF.
(To page 19- 1 IO)
I
N O
Intermittent failure.
Check for poor connections or
loose wires.
.
BLU
CONNECTOR
WIRE
V
4
View from terminal side.