Last Modified: 05-13-2024 |
6.11:8.1.0 |
Doc ID: RM1000000026ZA0 |
Model Year Start: 2023 |
Model: GR Corolla |
Prod Date Range: [09/2022 - 11/2022] |
Title: HEATING / AIR CONDITIONING: AIR CONDITIONING SYSTEM (for TMC Made, and Gasoline Model, with Manual Air Conditioning System for Electrical Control Type): P053011; Refrigerant Pressure Sensor Circuit Short to Ground; 2023 MY Corolla Corolla Hatchback GR Corolla [09/2022 - 11/2022] |
DTC
|
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.
This DTC is stored if refrigerant pressure on the high pressure side is extremely low.
DTC No.
|
Detection Item
|
DTC Detection Condition
|
Trouble Area
|
Memory
|
P053011
|
Refrigerant Pressure Sensor Circuit Short to Ground
|
Diagnosis Condition:
Malfunction:
-
Short (GND) in air conditioning pressure sensor circuit
Detection Time:
-
Continuously for 4 seconds or more
|
-
Refrigerant volume
-
Air conditioning pressure sensor
-
Harness or connector
-
Air conditioning amplifier assembly
|
Memorized
|
WIRING DIAGRAM
PROCEDURE
1.
|
CHECK COMPARE REFRIGERANT GAS PRESSURE VALUES SHOWN ON GTS AND MANIFOLD GAUGE SET
|
(a) Install a manifold gauge set.
Click here
(b) Compare the values displayed in the Data List and on the manifold gauge.
Body Electrical > Air Conditioner > Data List
Tester Display
|
Measurement Item
|
Range
|
Normal Condition
|
Diagnostic Note
|
Regulator Pressure Sensor
|
Air conditioning pressure sensor
|
-32768 to 32767 kPa(gauge)
|
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
|
Result
|
Proceed to
|
Data List value and manifold gauge set value do not match
|
A
|
Data List value matches manifold gauge set value
|
B
|
A
|
|
|
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
|
Air conditioning pressure sensor
|
-32768 to 32767 kPa(gauge)
|
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
|
OK:
Disconnecting the A61 connector of the air conditioning pressure sensor causes the Data List value to change.
Result
|
Proceed to
|
Regulator pressure sensor value changes
|
A
|
Regulator pressure sensor value does not change
|
B
|
A
|
|
|
3.
|
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - POWER SOURCE)
|
(a) Disconnect the A61 air conditioning pressure sensor connector.
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A61-3 (+) - Body ground
|
Ignition switch ON
|
4.75 to 5.25 V
|
|
|
*a
|
Front view of wire harness connector
(to Air Conditioning Pressure Sensor)
|
|
|
NG
|
|
|
4.
|
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - AIR CONDITIONING PRESSURE SENSOR)
|
(a) Disconnect the A61 air conditioning pressure sensor connector.
(b) Disconnect the I48 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A61-3 (+) - I48-11 (S5-3)
|
Always
|
Below 1 Ω
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
5.
|
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - BODY GROUND)
|
(a) Disconnect the A61 air conditioning pressure sensor connector.
|
|
*a
|
Front view of wire harness connector
(to Air Conditioning Pressure Sensor)
|
|
|
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
Tester Connection
|
Condition
|
Specified Condition
|
A61-2 (PR) - Body ground
|
Ignition switch ON
|
3.0 to 5.25 V
|
NG
|
|
|
6.
|
CHECK HARNESS AND CONNECTOR (AIR CONDITIONING PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY)
|
(a) Disconnect the A61 air conditioning pressure sensor connector.
(b) Disconnect the I48 air conditioning amplifier assembly connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection
|
Condition
|
Specified Condition
|
A61-2 (PR) or I48-6 (PRE) - Other terminals and body ground
|
Always
|
10 kΩ or higher
|
NG |
|
REPAIR OR REPLACE HARNESS OR CONNECTOR
|
|