Honda Acura NSX 1991 Service Manual page 1260

Rear Window Defogger
-Troubleshooting
NOTE: The numbers in the table show the troubleshooting sequence.
item to be inspected
Symptom
\
Defogger operates, but indicator
light does not go on.
Defogger does not operate and
indicator light does not go on.
Defogger does not operate, but
indicator light goes on.
Operate time is too long or too
short (Normal operation time is
25 minutes).
23-2 76
3 2
1 2
1
3 4 0 1
YEL or YELIWHT
3 8 0 1
or BLK