DTC B1411: Room Temperature Sensor Circuit [10/2018 - ]: Procedure
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- READ VALUE USING TECHSTREAM
- Connect the Techstream to the DLC3.
- Turn the power switch on (IG).
- Turn the Techstream on.
- Enter the following menus: Body Electrical / Air Conditioner / Data List.
- 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 [10/2018 - 07/2022] , or refer to REMOVAL [07/2022 - ]
Result:
NG
See step 2
- INSPECT COOLER (ROOM TEMP. SENSOR) THERMISTOR
- Remove the cooler (room temp. sensor) thermistor.
Refer to REMOVAL [10/2018 - ]
- Inspect the cooler (room temp. sensor) thermistor.
Refer to INSPECTION [10/2018 - ]
Result
Proceed to OK NG
Result:
NG
REPLACE COOLER (ROOM TEMP. SENSOR) THERMISTOR. Refer to REMOVAL [10/2018 - ]
Result:
OK
See step 3
- Remove the cooler (room temp. sensor) thermistor.
- CHECK HARNESS AND CONNECTOR (COOLER (ROOM TEMP. SENSOR) THERMISTOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)
- Disconnect the F50 air conditioning amplifier assembly connector.
- Measure the resistance according to the value(s) in the table below.
Standard Resistance
Tester Connection Condition Specified Condition F67-1 (+) - F50-14 (TR) Always Below 1 Ω F67-2 (-) - F50-1 (SG-1) Always Below 1 Ω F67-1 (+) or F50-14 (TR) - Other terminals and body ground Always 10 kΩ or higher F67-2 (-) or F50-1 (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 [10/2018 - 07/2022] , or refer to REMOVAL [07/2022 - ]
Result:
NG
REPAIR OR REPLACE HARNESS OR CONNECTOR