Honda Acura NSX 1991 Service Manual page 793

Troubleshooting
(From page 19-l 05)
Check for continuity in the GRN
wire between the TCS control unit
and PGM-FI ECU.
N O
Repair open in the GRN wire be-
tween the TCS control unit and
PGM-Fi control unit.
I
Start the engine.
Measure the voltage between the
TCS control unit No. 41 terminal
and body ground.
is there approximately 6.0 V?
Y E S
Disconnect the 26-P connector to
Measure the voltage between the
TCS control unit No. 41 terminal
is there approximately 6.0 V?
l Substitute a known-good TCS
control unit and recheck.
Cheok for poor connections or
loose wires.
NOTE: Use the PGM-FI
test harness (see section 1 1).
PGM-Fi TST,HARNESS
Substitute a
l
PGM-Fi ECU and recheck.
l Check for poor connections or
loose wires.
Substitute a known-good AIT
N O
control unit and recheck.
(internal short-circuit of the A/T
control unit.)
I
12-P CONNECTOR
GRN WIRE
12-P CONNECTOR
known-good
12-P CONNECTOR
G
RN
,
I
View from
terminal side.
View from
terminal side.
View from
terminal side
WIRE