Honda Acura NSX 1991 Service Manual page 797

Troubleshooting
(From page 19-109)
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Disconnect the 20-P connector
from the TCS control unit, the
22-P connector from the PGM-FI
ECU and the 20-P connector from
the A/T control unit.
Check for continuity between the
TCS control unit No. 13 terminal
Is there continuity?
Y E S
Repair short in the BLU wire be-
tween the TCS control unit, PGM-
Check for continuity in the BLU
between the TCS control unit
Repair open in the BLU wire be-
tween the TCS control unit and
PGM-FI ECU.
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Connect the 22-P connector to
Turn the ignition switch ON.
Measure the voltage between the
TCS control unit No. 13 terminal
and body ground.
Is there approximately 5 V?
Y E S
(To page 19-I 11)
NOTE: Use the PGM-FI test
harness (see section 11)
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l Substitute a known-good
PGM-FI ECU and recheck.
l Check for poor connections or
loose wires.
20-P CONNECTOR
View from terminal side.
20-P CONNECTOR
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PGM-FI TEST HARNESS
20-P CONNECTOR
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View from terminal side