DTC B1411: Room Temperature Sensor Circuit [04/2018 -]: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the power switch on (IG).
3. Turn the Techstream on.
4. Enter the following menus: Body Electrical / Air Conditioner / Data List.
5. Read the Data List according to the display on the Techstream.

   Body Electrical > Air Conditioner > Data List 

   Tester Display	Measurement Item	Range	Normal Condition	Diagnostic Note
   Room Temperature Sensor	Cooler (room temp. sensor) thermistor	Min.: -6.50°C (20.30°F) Max.: 57.25°C (135.05°F)	Actual cabin temperature displayed	Cooler (room temp. sensor) thermistor circuit malfunction When open circuit: -6.50°C (20.30°F) When short circuit: 57.25°C (135.05°F)

   Body Electrical > Air Conditioner > Data List 

   Tester Display
   Room Temperature Sensor

   OK

   The display is as specified in the normal condition column.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 -] 

Result: 

NG 

See step  2

1. Remove the cooler (room temp. sensor) thermistor.

   Refer to REMOVAL [04/2018 - 08/2021] , or refer to REMOVAL [08/2021 -]

2. Inspect the cooler (room temp. sensor) thermistor.

   Refer to INSPECTION [04/2018 -]

   Result

   Proceed to
   OK
   NG

Result: 

NG 

REPLACE COOLER (ROOM TEMP. SENSOR) THERMISTOR. Refer to  REMOVAL [04/2018 - 08/2021]  , or refer to  REMOVAL [08/2021 -] 

Result: 

OK 

See step  3

1. Disconnect the G36 air conditioning amplifier assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   G44-1 - G36-14 (TR)	Always	Below 1 Ω
   G44-2 - G36-1 (SG-1)	Always	Below 1 Ω
   G44-1 or G36-14 (TR) - Other terminals and body ground	Always	10 kΩ or higher
   G44-2 or G36-1 (SG-1) - Other terminals and body ground	Always	10 kΩ or higher

   Result

   Proceed to
   OK
   NG

Result: 

OK 

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY. Refer to  REMOVAL [04/2018 - 08/2020]  , or refer to  REMOVAL [08/2020 -] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR