Intake Sensor

COMPONENT DESCRIPTION
The intake sensor is located on the cooling unit. It converts temperature of air after it passes through the evaporator into a resistance value. The value is then input to the auto amplifier.





DIAGNOSTIC PROCEDURE
SYMPTOM: Intake sensor circuit is open or shorted. (24 or -24 is indicated on auto amp. as a result of conducting Self-diagnosis STEP 2.)





COMPONENT INSPECTION

INTAKE SENSOR
After disconnecting intake sensor harness connector, measure resistance between terminals (1) and (9) at sensor harness side, using the table below.

Temperature ° C (° F) Resistance K Ohms
-20 (-4) 16.2
-10 (14) 9.8
0 (32) 6.0
10 (50) 3.94
20 (68) 2.64
25 (77) 2.12
30 (86) 1.82
40 (104) 1.27