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)  P053011  Refrigerant Pressure Sensor Circuit Short to Ground  


DESCRIPTION

The air conditioning pressure sensor, which is installed to the high pressure side pipe to detect refrigerant pressure, sends a refrigerant pressure signal to the air conditioning amplifier assembly. The air conditioning amplifier assembly converts this signal to a pressure value according to the sensor characteristics and uses it to control the compressor.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
P053011 Refrigerant Pressure Sensor Circuit Short to Ground
Diagnosis Condition:

Ignition switch ON


Malfunction Status:

Short in air conditioning pressure sensor circuit


Detection Time:

Continuously for 4 seconds or more


·

Air conditioning pressure sensor

·

Harness or connector

·

Air conditioning amplifier assembly


Memorized

WIRING DIAGRAM

E316642E37
4.479,2.865 4.938,3.063 0.458,0.198 10 false G47 4.479,3.031 6.927,3.365 2.448,0.333 10 false Air Conditioning Amplifier Assembly 4.563,1.094 5.01,1.281 0.448,0.188 10 false S5-3 4.573,1.573 5.021,1.76 0.448,0.188 10 false PRE 4.563,2.031 5.01,2.219 0.448,0.188 10 false SG-4 4.229,1.094 4.677,1.281 0.448,0.188 10 false 11 4.292,1.573 4.74,1.76 0.448,0.188 10 false 6 4.24,2.042 4.688,2.229 0.448,0.188 10 false 15 1.99,1.083 2.438,1.271 0.448,0.188 10 false 3 2,1.573 2.448,1.76 0.448,0.188 10 false 2 2,2.042 2.448,2.229 0.448,0.188 10 false 1 1.656,1.563 2.104,1.75 0.448,0.188 10 false PR 1.74,1.083 2.188,1.271 0.448,0.188 10 false + 1.75,2.042 2.198,2.229 0.448,0.188 10 false - 0.375,2.563 0.833,2.76 0.458,0.198 10 false A22 0.375,2.708 2.823,3.042 2.448,0.333 10 false Air Conditioning Pressure Sensor 5.531,0.938 5.979,1.125 0.448,0.188 10 false 5 V 5.99,1.688 6.438,1.875 0.448,0.188 10 false AD

PROCEDURE

1.CHECK REFRIGERANT PRESSURE

Pre-procedure1

a.

Install a manifold gauge set.


b.

Read the Data List according to the display on the GTS.

Body Electrical > Air Conditioner > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Regulator Pressure Sensor Refrigerant gas pressure on high pressure side Min.: -32.768 MPaG
Max.: 32.767 MPaG 		Actual refrigerant pressure displayed
·

Refrigerant line (gas leak etc.)

·

Air conditioning pressure sensor circuit malfunction


Body Electrical > Air Conditioner > Data List
Tester Display
Regulator Pressure Sensor
50003 450 106

Procedure1

c.

Compare the values displayed in the Data List and on the manifold gauge set.


Result:
Result Proceed to
The values displayed in the Data List and on the manifold gauge set does not match A
The values displayed in the Data List and on the manifold gauge set match B


Post-procedure1

d.

None



A

2.READ VALUE USING GTS (REGULATOR PRESSURE SENSOR)

B

INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING SYSTEM (for Gasoline Model)>ON-VEHICLE INSPECTION


2.READ VALUE USING GTS (REGULATOR PRESSURE SENSOR)
a.

Read the Data List according to the display on the GTS.

Body Electrical > Air Conditioner > Data List
Tester Display Measurement Item Range Normal Condition Diagnostic Note
Regulator Pressure Sensor Refrigerant gas pressure on high pressure side Min.: -32.768 MPaG
Max.: 32.767 MPaG 		Actual refrigerant pressure displayed
·

Refrigerant line (gas leak etc.)

·

Air conditioning pressure sensor circuit malfunction


Body Electrical > Air Conditioner > Data List
Tester Display
Regulator Pressure Sensor
50003 450 106
OK:

Disconnecting the A22 connector of the air conditioning pressure sensor causes the Data List value to change.



Result:
Result Proceed to
Regulator pressure sensor value changes A
Regulator pressure sensor value does not change B



A

3.CHECK TERMINAL VOLTAGE (AIR CONDITIONING PRESSURE SENSOR)

B

5.CHECK TERMINAL VOLTAGE (AIR CONDITIONING AMPLIFIER ASSEMBLY)
3.CHECK TERMINAL VOLTAGE (AIR CONDITIONING PRESSURE SENSOR)

Pre-procedure1

a.

Disconnect the air conditioning pressure sensor connector.


Procedure1

b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A22-3 (+) - Body ground Ignition switch ON 4.75 to 5.25 V



Result:
Proceed to
OK
NG


Post-procedure1

c.

None



OK

REPLACE AIR CONDITIONING PRESSURE SENSOR

Click hereVehicle Interior>HEATING / AIR CONDITIONING>AIR CONDITIONING PRESSURE SENSOR>REMOVAL


NG

4.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)
4.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)

Pre-procedure1

a.

Disconnect the A22 air conditioning pressure 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
A22-3 (+) - G47-11 (S5-3) Always Below 1 Ω



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

5.CHECK TERMINAL VOLTAGE (AIR CONDITIONING AMPLIFIER ASSEMBLY)

Pre-procedure1

a.

Disconnect the A22 air conditioning pressure sensor connector.


Procedure1

b.

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

Standard Voltage:
Tester Connection Switch Condition Specified Condition
A22-2 (PR) - Body ground Ignition switch ON 3.0 to 5.25 V



Result:
Proceed to
OK
NG


Post-procedure1

c.

None



OK

REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY

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


NG

6.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)
6.CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)

Pre-procedure1

a.

Disconnect the A22 air conditioning pressure 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
A22-2 (PR) or G47-6 (PRE) - 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