DTC P0530
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0530: A/C Refrigerant Pressure Sensor “A” Circuit Any of the following conditions is met.
•Output voltage of A/C refrigerant pressure sensor signal circuit is lower than 0.15 V. (3 D/C detection logic but MIL does not light up)•Output voltage of A/C refrigerant pressure sensor signal circuit is higher than 4.93 V. |
•A/C refrigerant pressure sensor and/or its circuit
•ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | A2: | A/C refrigerant pressure sensor signal circuit | 1. | A/C refrigerant pressure sensor |
| A1: | A/C refrigerant pressure sensor power supply circuit | A3: | A/C refrigerant pressure sensor ground circuit | 2. | ECM |
DTC Confirmation Procedure
1)Run engine at idle speed for 10 sec.
2)Set A/C ON for 10 sec.
3)Set A/C OFF.
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
A/C refrigerant pressure sensor power supply circuit check
1)With ignition “OFF”, disconnect A/C refrigerant pressure sensor connector.
2)Check for proper terminal connection to A/C refrigerant pressure sensor connector.
3)If connection is OK, set ignition “ON”.
4)Check that voltage between “A1” and “A3” is approx. 5 V.
Is check result OK?
|
Go to Step 4.
|
Go to Step 3.
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| 3 |
A/C refrigerant pressure sensor ground circuit check
1)Check that voltage between “A1” and ground is approx. 5 V.
Is check result OK?
|
Repair “A3” circuit.
If this DTC is detected again, replace ECM and recheck DTC.
|
Repair “A1” circuit.
If this DTC is detected again, replace ECM and recheck DTC.
|
| 4 |
A/C refrigerant pressure sensor signal circuit check
1)With ignition “OFF”, disconnect “C01” and “E01” connectors from ECM.
2)Check for proper terminal connection to “C01” and “E01” connectors.
3)If connections are OK, check the following points.
•Resistance of “A2” circuit: less than 1 Ω
•Resistance between “A2” circuit and ground: infinity •Resistance between “A2” circuit terminal and other terminal at A/C refrigerant pressure sensor connector: infinity •Voltage of “A2” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 5.
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Repair or replace defective wire harness.
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| 5 |
A/C refrigerant pressure sensor check
1)Check A/C refrigerant pressure sensor.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace A/C refrigerant pressure sensor.
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