Inspection Procedure

Fig 1: Identifying Cooler (Ambient Temp. Sensor) Thermistor Connector Terminals

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1. Remove cooler (ambient temp. sensor) thermistor.
Fig 2: Measuring Resistance Between Terminals 1 & 2 Of Cooler (Ambient Temp. Sensor) Thermistor Connector
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2. Measure resistance between terminals 1 and 2 of cooler (ambient temp. sensor) thermistor connector at each temperature.

   HINT:

   As the temperature increases, the resistance decreases.

   Standard resistance 

   TEMPERATURE SPECIFICATION
   
   

   Temperature °C (°F)	Specification kΩ
   10 (50)	3.00 to 3.73
   15 (59)	2.45 to 2.88
   20 (68)	1.95 to 2.30
   25 (77)	1.60 to 1.80
   30 (86)	1.28 to 1.47
   35 (95)	1.00 to 1.22
   40 (104)	0.80 to 1.00
   45 (113)	0.65 to 0.85
   50 (122)	0.50 to 0.70
   55 (131)	0.44 to 0.60
   60 (140)	0.36 to 0.50

   NG: REPLACE THERMISTOR ASSEMBLY 

   OK: Go to next step 

NG: REPAIR OR REPLACE HARNESS OR CONNECTOR 

OK: REPLACE ACCESSORY METER ASSEMBLY