Honda Acura NSX 1991 Service Manual page 920

Troubleshooting
Recirculation Control Motor
Self-diagnosis indicator light H comes on: Indicates a problem in the recirculation control motor circuit. Use a digital
multimeter (KS-AHM32-003) to check it.
The recirculation control motor regulates the fresh/recirc door according to output from the control unit.
Problem in the recirculation con-
trol motor circuit.
the ignition switch OFF.
Turn
I
Make sure all wires in the recircu-
lation control motor connector are
securely attached. Make sure the
linkage is free of obstructions.
Remove the climate control unit
(page 22-84).
Disconnect the both connectors
from the climate control unit.
Open the hood. Disconnect the
8-P connector from recirculation
control motor at the blower.
Check each wires for continuity:
l
LT GRNlRED wire
l
l
LT GRNlYEL wire
l
l
To page' 22-33
22-32
No.3 (BLUIGRN)
Repair any open in the wire(s) be-
tween the reclrc. motor and cli-
mate control unit.