DESCRIPTION
The air conditioner 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 |
---|---|---|---|---|
P053015 |
Refrigerant Pressure Sensor Circuit Short to Battery or Open |
Diagnosis Condition:
Malfunction Status:
Detection Time:
|
| Memorized |
Vehicle Condition | |||
---|---|---|---|
Pattern 1 | Pattern 2 | ||
Diagnosis Condition | Ignition switch ON |
○ | ○ |
Malfunction | Open in air conditioner pressure sensor circuit |
○ | - |
Short in air conditioner pressure sensor circuit |
- | ○ | |
Detection Time | Continuously for 4 seconds or more |
Continuously for 4 seconds or more | |
Trip Count | 1 trip |
1 trip |
HINT:
If the conditions of either of these patterns are detected, a DTC will be stored
WIRING DIAGRAM
PROCEDURE
1. |
CHECK REGULATOR PRESSURE SENSOR |
(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 |
Air conditioner pressure sensor |
Min.: -32768 kPa(gauge) Max.: 32767 kPa(gauge) |
Actual refrigerant pressure displayed |
|
Tester Display |
---|
Regulator Pressure Sensor |
(c) Compare the values displayed in the Data List and on the manifold gauge set.
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 |
B | INSPECT REFRIGERANT PRESSURE WITH MANIFOLD GAUGE SET |
|
2. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - BODY GROUND) |
(a) Disconnect the A61 air conditioner pressure sensor connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Switch Condition |
Specified Condition |
---|---|---|
A61-1 (-) - Body ground |
Always | Below 1 Ω |
NG | GO TO STEP 8 |
|
3. |
CHECK TERMINAL VOLTAGE |
(a) Measure the voltage according to the value(s) in the table below. Standard Voltage:
|
|
Result | Proceed to |
---|---|
Voltage is more than 5.25 V |
A |
Voltage is more than or equal to 3.0 and less than or equal to 5.25 V |
B |
Voltage is less than 3.0 V |
C |
B | GO TO STEP 5 |
C | GO TO STEP 7 |
|
4. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the I48 air conditioning amplifier assembly connector.
(b) 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 |
OK | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
5. |
CHECK INTERNAL CIRCUIT RESISTANCE (AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
---|---|---|
A61-3 (+) - A61-2 (PR) |
Ignition switch off | 180 to 220 kΩ |
HINT:
After turning the ignition switch off, wait at least 30 seconds before performing the measurement.
OK | REPLACE AIR CONDITIONER PRESSURE SENSOR |
|
6. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the I48 air conditioning amplifier assembly connector.
(b) 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) - A61-3 (+) or I48-11 (S5-3) |
Always | 10 kΩ or higher |
OK | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
7. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the I48 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
---|---|---|
A61-2 (PR) - I48-6 (PRE) |
Always | Below 1 Ω |
OK | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |
8. |
CHECK HARNESS AND CONNECTOR (AIR CONDITIONER PRESSURE SENSOR - AIR CONDITIONING AMPLIFIER ASSEMBLY) |
(a) Disconnect the I48 air conditioning amplifier assembly connector.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Tester Connection | Condition |
Specified Condition |
---|---|---|
A61-1 (-) - I48-15 (SG-4) |
Always | Below 1 Ω |
OK | REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY |
NG | REPAIR OR REPLACE HARNESS OR CONNECTOR |