Honda Acura NSX 1991 Service Manual page 945

From page 22-56
Test the compressor clutch
relay: Connect battery power to
relay terminal C, then connect ter-
minal D to body ground. There
should be continuity between ter-
minals A and Et with power con-
nected, no power with power
disconnected.
Is the relay OK?
Y E S
I
the compressor clutch
Remove the panel from behind the
passenger seat. Disconnect the 4
connectors from PGM-FI-ECU.
Connect teh ECU test harness
connectors to the ECU.
Turn the ignition switch ON.
Measure battery voltage between
Is there battery voltage?
Y E S
To page 22-58
NO
Replace the compressor clutch
r e l a v .
I
NO
Repair open in the REDlBLU wire
between the compressor clutch
relay and PGM-FI-ECU.
I
ECU TEST HARNESS