RM38T0EC _58 Vehicle Interior _104612 HEATING / AIR CONDITIONING _0601796 AIR CONDITIONING SYSTEM(for HEV Model) C

HEATING / AIR CONDITIONING  AIR CONDITIONING SYSTEM(for HEV Model)  P053511  Evaporator Temperature Sensor Circuit Short to Ground  


DESCRIPTION

The No. 1 cooler thermistor is installed to the evaporator in the air conditioner unit to detect the temperature of the cooled air that has passed through the evaporator, which is used to control the air conditioning system. It sends signals to the air conditioning amplifier assembly. The resistance of the No. 1 cooler thermistor changes in accordance with the temperature of the cooled air that has passed through the evaporator. As the temperature decreases, the resistance increases. As the temperature increases, the resistance decreases.

The air conditioning amplifier assembly applies voltage to the No. 1 cooler thermistor and reads voltage changes as the resistance of the No. 1 cooler thermistor changes.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
P053511 Evaporator Temperature Sensor Circuit Short to Ground Diagnosis Condition:

Ignition switch ON


Malfunction Status:

Short in evaporator temperature sensor circuit


Detection Time:

Continuously for 4 seconds or more


·

No. 1 cooler thermistor

·

Air conditioning harness assembly

·

Air conditioning amplifier assembly


Memorized

WIRING DIAGRAM

w/ Rear Air Duct
E521202E04
2.479,1.188 2.76,1.427 0.281,0.24 10 false 1 2.469,0.375 2.75,0.615 0.281,0.24 10 false 2 0.635,1.927 2.198,2.323 1.563,0.396 10 false No. 1 Cooler Thermistor 2.948,1.948 4.5,2.323 1.552,0.375 10 false Air Conditioning Harness Assembly 5.177,1.938 6.75,2.552 1.573,0.615 10 false Air Conditioning Amplifier Assembly 4.875,0.385 5.156,0.625 0.281,0.24 10 false 6 4.885,1.198 5.167,1.438 0.281,0.24 10 false 5 5.177,0.583 5.698,0.865 0.521,0.281 10 false TEA 5.177,1.406 5.646,1.656 0.469,0.25 10 false SGA 4.844,1.406 5.167,1.635 0.323,0.229 10 false z1 4.854,0.594 5.177,0.823 0.323,0.229 10 false z1 2.469,0.583 2.792,0.813 0.323,0.229 10 false A 2.469,1.406 2.792,1.635 0.323,0.229 10 false A

w/o Rear Air Duct
E521202E07
2.479,1.188 2.76,1.427 0.281,0.24 10 false 1 2.469,0.375 2.75,0.615 0.281,0.24 10 false 2 0.635,1.927 2.198,2.323 1.563,0.396 10 false No. 1 Cooler Thermistor 2.948,1.948 4.5,2.323 1.552,0.375 10 false Air Conditioning Harness Assembly 5.177,1.938 6.75,2.552 1.573,0.615 10 false Air Conditioning Amplifier Assembly 4.875,0.385 5.156,0.625 0.281,0.24 10 false 6 4.885,1.198 5.167,1.438 0.281,0.24 10 false 5 5.177,0.583 5.698,0.865 0.521,0.281 10 false TE 5.177,1.406 5.646,1.656 0.469,0.25 10 false SG-3 4.813,0.583 5.135,0.813 0.323,0.229 10 false m6 4.833,1.406 5.156,1.635 0.323,0.229 10 false m6 2.417,0.594 2.74,0.823 0.323,0.229 10 false m2 2.438,1.396 2.76,1.625 0.323,0.229 10 false m2

PROCEDURE

1.CHECK VEHICLE TYPE
a.

Check vehicle specifications.


Result:
Result Proceed to
w/ Rear Air Duct A
w/o Rear Air Duct B



A

2.CLEAR DTC

B

5.CLEAR DTC
2.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

Result:
Proceed to
NEXT



NEXT

3.CHECK FOR DTC
3.CHECK FOR DTC
a.

Turn the ignition switch off.


b.
E478812C35
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 1.958,0.635 2.417,0.906 0.458,0.271 10 false TEA 1.938,0.979 2.458,1.219 0.521,0.24 10 false SGA
*1 No. 1 Cooler Thermistor
*2 Air Conditioning Amplifier Assembly


Disconnect the A No. 1 cooler thermistor connector.


c.

Turn the ignition switch to ON and wait for 4 seconds or more.


d.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 450

Result:
Result Proceed to
P053515 is output A
P053511 is output B



A

REPLACE NO. 1 COOLER THERMISTOR

Click hereVehicle Interior>HEATING / AIR CONDITIONING>FRONT EVAPORATOR TEMPERATURE SENSOR>REMOVAL


B

4.INSPECT AIR CONDITIONING HARNESS ASSEMBLY
4.INSPECT AIR CONDITIONING HARNESS ASSEMBLY
a.

Remove the air conditioning harness assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING UNIT>DISASSEMBLY


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
z1-5 (SGA) or A-1 - Other terminals and body ground Always 10 kΩ or higher
z1-6 (TEA) or A-2 - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

REPLACE AIR CONDITIONING HARNESS ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING UNIT>DISASSEMBLY


5.CLEAR DTC
a.

Clear the DTCs.

Body Electrical > Air Conditioner > Clear DTCs
50002 450

Result:
Proceed to
NEXT



NEXT

6.CHECK FOR DTC
6.CHECK FOR DTC
a.

Turn the ignition switch off.


b.
E478812C36
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 2.021,0.625 2.479,0.896 0.458,0.271 10 false TE 1.917,0.979 2.438,1.219 0.521,0.24 10 false SG-3
*1 No. 1 Cooler Thermistor
*2 Air Conditioning Amplifier Assembly


Disconnect the m2 No. 1 cooler thermistor connector.


c.

Turn the ignition switch to ON and wait for 4 seconds or more.


d.

Check for DTCs.

Body Electrical > Air Conditioner > Trouble Codes
50001 450

Result:
Result Proceed to
P053515 is output A
P053511 is output B



A

REPLACE NO. 1 COOLER THERMISTOR

Click hereVehicle Interior>HEATING / AIR CONDITIONING>FRONT EVAPORATOR TEMPERATURE SENSOR>REMOVAL


B

7.INSPECT AIR CONDITIONING HARNESS ASSEMBLY
7.INSPECT AIR CONDITIONING HARNESS ASSEMBLY
a.

Remove the air conditioning harness assembly.

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING UNIT>DISASSEMBLY


b.

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

Standard Resistance:
Tester Connection Condition Specified Condition
m6-5 (SG-3) or m2-1 - Other terminals and body ground Always 10 kΩ or higher
m6-6 (TE) or m2-2 - Other terminals and body ground Always 10 kΩ or higher



Result:
Proceed to
OK
NG



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

REPLACE AIR CONDITIONING HARNESS ASSEMBLY

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING UNIT>DISASSEMBLY