Honda Acura NSX 1991 Service Manual page 904

Troubleshooting
Self-diagnosis indicator lilght A comes on: Indicates a problem in the in-car temperature sensor circuit. Use a digital mul-
timeter (KS-AHM-32-003)
The in-car temperature sensor is a temperature dependent resistor (thermistor). The resistance of the thermistor decreases
as the temperature inside the car increases.
Problem in the in-car temperature
sensor circuit.
Remove the center console panel
(page 22-841, then disconnect the
Measure resistance between the
No. 1 terminal and No.2 terminal
in the sensor half of the con-
nector.
Is there l-1 2kD7
Y E S
Turn the ignition switch ON.
Measure voltage between the
other half of the connector and
body ground.
Is there approx. 5V?
Y E S
22-l 6
to check it.
Replace
NO
Turn the ignition switch OFF.
Remove the climate control unit
(page 22-84). Leave the wire con-
in-car temperature sensor
V
8