RM36D0EC _58 Vehicle Interior _083104 HEATING / AIR CONDITIONING _0402828 AIR CONDITIONING SYSTEM(for Gasoline Model) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for Gasoline Model)  B141A11  Room Temperature Sensor Circuit Short to Ground  


DESCRIPTION

The cooler thermistor (room temperature sensor) is installed in the instrument panel to detect the cabin temperature, which is used to control the air conditioning system. The resistance of the cooler thermistor (room temperature sensor) changes in accordance with the cabin temperature. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.

The air conditioning amplifier assembly applies voltage to the cooler thermistor (room temperature sensor) and reads voltage changes due to changes in the resistance of the cooler thermistor (room temperature sensor).

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
B141A11 Room Temperature Sensor Circuit Short to Ground
Diagnosis Condition:

Ignition switch ON


Malfunction Status:

Short in room temperature sensor circuit


Detection Time:

Continuously for 4 seconds or more


·

Cooler thermistor (room temperature sensor)

·

Harness or connector

·

Air conditioning amplifier assembly


Memorized

WIRING DIAGRAM

E544599E02
0.083,1.802 0.417,2 0.333,0.198 10 false G60 0.083,1.969 2.969,2.25 2.885,0.281 10 false Cooler Thermistor (Room Temperature Sensor) 4.625,1.875 4.99,2.083 0.365,0.208 10 false G47 4.635,2.052 6.896,2.281 2.26,0.229 10 false Air Conditioning Amplifier Assembly 2.146,0.667 2.323,0.885 0.177,0.219 10 false 1 2.156,1.135 2.333,1.354 0.177,0.219 10 false 2 4.583,1.135 4.74,1.323 0.156,0.188 10 false 3 4.594,0.656 4.781,0.844 0.188,0.188 10 false 5 4.854,0.729 5.104,0.917 0.25,0.188 10 false TR 4.865,1.26 5.271,1.448 0.406,0.188 10 false SG-1 1.896,0.646 2.188,0.844 0.292,0.198 11 false + 1.917,1.125 2.167,1.313 0.25,0.188 10 false -

PROCEDURE

1.READ VALUE USING GTS (CHECK FOR SHORT IN WIRE HARNESS)
A226261C71
0.917,1.771 1.281,2 0.365,0.229 10 false *1 2.667,1.771 3.031,2 0.365,0.229 10 false *2 2.063,0.688 2.521,0.958 0.458,0.271 10 false TR 1.917,1.031 2.438,1.271 0.521,0.24 10 false SG-1
*1 Cooler Thermistor (Room Temperature Sensor)
*2 Air Conditioning Amplifier Assembly


Pre-procedure1

a.

Disconnect the G60 cooler thermistor (room temperature sensor) connector.


Procedure1

b.

According to the display on the GTS, read the Data List.

Body Electrical > Air Conditioner > Data List
Tester Display
Room Temperature Sensor
50003 450 100
OK:
GTS Display Specified Condition
Room Temperature Sensor -327.68°C (-557.82°F)



Result:
Proceed to
OK
NG


Post-procedure1

c.

None



OK

REPLACE COOLER THERMISTOR (ROOM TEMPERATURE SENSOR)

Click hereVehicle Interior>HEATING / AIR CONDITIONING>ROOM TEMPERATURE SENSOR>REMOVAL


NG

2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - COOLER THERMISTOR (ROOM TEMPERATURE SENSOR))
2.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - COOLER THERMISTOR (ROOM TEMPERATURE SENSOR))

Pre-procedure1

a.

Disconnect the G60 cooler thermistor (room temperature sensor) connector.


b.

Disconnect the G47 air conditioning amplifier assembly connector.


Procedure1

c.

Measure the resistance according to the value(s) in the table below.

Standard Resistance::
Tester Connection Condition Specified Condition
G60-1 (+) or G47-5 (TR) - Other terminals and body ground Always 10 kΩ or higher
G60-2 (-) or G47-3 (SG-1) - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG


Post-procedure1

d.

None



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING AMPLIFIER>REMOVAL


NG

REPAIR OR REPLACE HARNESS OR CONNECTOR