HEATING / AIR CONDITIONING AIR CONDITIONING SYSTEM(for Gasoline Model) P05347A Refrigerant Gas Fluid Leak or Seal Failure
DESCRIPTION
This DTC is output when the refrigerant gas volume is the specified value or less.
The air conditioning amplifier assembly uses the output value of each sensor (ambient temperature, refrigerant gas pressure, etc.) to determine whether the refrigerant gas volume is correct. When the volume of refrigerant gas is insufficient, the A/C switch indicator is turned off and the compressor with motor assembly is stopped.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | Memory |
|---|---|---|---|---|
| P05347A | Refrigerant Gas Fluid Leak or Seal Failure | Diagnosis Condition:
When refrigerant gas volume judgment conditions are met in normal control Malfunction Status:
The amount of refrigerant gas is determined to be insufficient under normal control Detection Time:
Continuously for 15 minutes or more |
·
Refrigerant line ·
Cooler expansion valve ·
Air conditioning pressure sensor ·
Harness or connector ·
Air conditioning amplifier assembly |
Memorized |
WIRING DIAGRAM
PROCEDURE
Check for DTCs.
- Body Electrical > Air Conditioner > Trouble Codes
- 50001 450
- HINT:
-
Check even when the DTCs detected for temporary failures.
- Result:
Result Proceed to P05347A is output A P007011 or P007015 is output B
A
B
Pre-procedure1
Install a manifold gauge set.
Read the manifold gauge set with the following conditions met.
| Item | Condition |
|---|---|
| Vehicle doors | Fully open |
| Temperature setting | MAX COLD |
| Blower speed | HI |
| A/C switch | On |
| Recirculation/fresh switch | RECIRCULATION |
| Interior temperature | 25 to 35°C (77 to 95°F) |
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 MPaGActual 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
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 match A The values displayed in the Data List and on the manifold gauge set does not match B
Post-procedure1
None
A
B
Pre-procedure1
Disconnect the A22 air conditioning pressure sensor connector.
Procedure1
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
None
OK
NG
Pre-procedure1
Disconnect the A22 air conditioning pressure sensor connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A22-1 (-) - Body ground Always Below 1 Ω
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
Pre-procedure1
Disconnect the A22 air conditioning pressure sensor connector.
Disconnect the G47 air conditioning amplifier assembly connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A22-2 (PR) - G47-6(PRE) Always Below 1 Ω A22-2 (PR) or G47-6 (PRE) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
- NOTICE:
- ·
If refrigerant pressure on the high pressure side becomes extremely high during the inspection (if the voltage exceeds 4.61 V), a fail-safe function will stop compressor operation. In this case, make sure to measure the voltage before the fail-safe function operates.
·It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the malfunction may recur after a while.
Pre-procedure1
Connect the air conditioning amplifier assembly connector.
Measure the voltage with the following conditions met.
| Item | Condition |
|---|---|
| Vehicle doors | Fully open |
| Temperature setting | MAX COLD |
| Blower speed | HI |
| A/C switch | On |
| Recirculation/fresh switch | RECIRCULATION |
| Interior temperature | 25 to 35°C (77 to 95°F) |
Procedure1
| *a | Component with harness connected
(Air Conditioning Amplifier Assembly) |
Measure the voltage according to the value(s) in the table below.
- Standard Voltage:
Tester Connection Condition Specified Condition G47-6 (PRE) - Body ground A/C switch on
(Compressor operating)0.62 to 4.73 V
- HINT:
-
When the ambient air temperature is low (below -1.5°C (29.3°F)), the compressor will be stopped, due to inputs of the thermistor assembly and No. 1 cooler thermistor, to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment.
- OK:
The voltage value changes.
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
- NOTICE:
- ·
If refrigerant pressure on the high pressure side becomes extremely high during the inspection (if the voltage exceeds 4.61 V), a fail-safe function will stop compressor operation. In this case, make sure to measure the voltage before the fail-safe function operates.
·It is necessary to measure the voltage for a certain amount of time (approximately 10 minutes) because the malfunction may recur after a while.
Pre-procedure1
Measure the voltage with the following conditions met.
| Item | Condition |
|---|---|
| Vehicle doors | Fully open |
| Temperature setting | MAX COLD |
| Blower speed | HI |
| A/C switch | On |
| Recirculation/fresh switch | RECIRCULATION |
| Interior temperature | 25 to 35°C (77 to 95°F) |
Procedure1
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 MPaGActual 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
- HINT:
-
When the ambient air temperature is low (below -1.5°C (29.3°F)), the compressor will be stopped, due to inputs of the thermistor assembly and No. 1 cooler thermistor, to prevent the evaporator from freezing. In this case, perform the inspection in a warm indoor environment.
- OK:
The value displayed in the Data List changes.
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
Pre-procedure1
Disconnect the A22 air conditioning pressure sensor connector.
Disconnect the G47 air conditioning amplifier assembly connector.
Procedure1
Measure the resistance according to the value(s) in the table below.
- Standard Resistance:
Tester Connection Condition Specified Condition A22-1 (-) - G47-15 (SG-4) Always Below 1 Ω A22-1 (-) or G47-15 (SG-4) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG
Pre-procedure1
Disconnect the A22 air conditioning pressure sensor connector.
Disconnect the G47 air conditioning amplifier assembly connector.
Procedure1
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 A22-3 (+) or G47-11 (S5-3) - Other terminals and body ground Always 10 kΩ or higher
- Result:
Proceed to OK NG
Post-procedure1
None
OK
NG