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.
•Measured voltage of A/C refrigerant pressure sensor signal circuit is lower than specified value. (1 D/C detection logic but MIL does not light up)•Measured voltage of A/C refrigerant pressure sensor signal circuit is higher than specified value. |
•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. | ECM |
| A1: | A/C refrigerant pressure sensor power supply circuit | A3: | A/C refrigerant pressure sensor ground circuit | 2. | A/C refrigerant pressure sensor |
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)When ignition is “OFF”, disconnect A/C refrigerant pressure sensor connector.
2)Check for proper terminal connection to A/C refrigerant pressure sensor connector.
3)If connections are OK, set ignition “ON”.
4)Check that voltage between “A1” and “A3” circuits is approx. 5 V.
Is check result OK?
|
Go to Step 5.
|
Go to Step 3.
|
| 3 |
A/C refrigerant pressure sensor ground circuit check
1)Check that voltage between “A1” circuit and ground is approx. 5 V.
Is check result OK?
|
Repair “A3” circuit.
If DTC P0530 is detected again, replace ECM and recheck DTC.
|
Go to Step 4.
|
| 4 |
A/C refrigerant pressure sensor power supply circuit check
1)When ignition is “OFF”, disconnect “E01” connector from ECM.
2)Check for proper terminal connection to “E01” connector.
3)If connections are OK, check the following points.
•Resistance of “A1” circuit: less than 1 Ω
•Resistance between “A1” circuit and ground: infinity •Resistance between “A1” circuit terminal and other terminal at A/C refrigerant pressure sensor connector: infinity •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Replace ECM and recheck DTC.
|
Repair or replace defective wire harness.
|
| 5 |
A/C refrigerant pressure sensor signal circuit check
1)When ignition is “OFF”, disconnect “E01” connector from ECM.
2)Check for proper terminal connection to “E01” connector.
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 6.
|
Repair or replace defective wire harness.
|
| 6 |
A/C refrigerant pressure sensor check
1)Check A/C refrigerant pressure sensor.
•Manual A/C model:
•Automatic A/C model: Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace A/C refrigerant pressure sensor.
•Manual A/C model:
•Automatic A/C model: |