Honda Acura NSX 1991 Service Manual page 912

Troubleshooting
Self-diagnosis indicator light E comes on: Indicates a problem in the evaporator sensor circuit. Use a digital mul-
timeter (KS-AHM-32-003)
The evaporator temperature sensor is a temperature dependent resistor (thermistor). The resistance of the thermis-
tor decreases as the evaporator outlet air temperature increases.
Problem in the evaporator temper-
ature sensor circuit.
Disconnect the 2-P connector
from the evaporator temperature
sensor.
Measure resistance between the
2 terminals in the temperature
sensor half of the connector.
Turn the ignition switch ON.
Measure voltage between LT GRN
wire ( +) terminal in the other half
of the connector and body
ground.
Is there approx. 5 V?
I
Y E S
To page 22-25
22-24
to check it.
NO
Replace evaporator temperature
sensor.
Turn the ignition switch OFF.
Remove the climate control unit
I
To pa& 22-25