DTC P0520
Precautions: General safety (00)
DTC Detecting Condition and Trouble Area
| DTC detecting condition | Trouble area |
|---|---|
|
P0520: Engine Oil Pressure Sensor / Switch Circuit Measured voltage of oil pressure switch-1 signal circuit is higher than specified value when engine is not running. (1 D/C detection logic but MIL does not light up) |
•Oil pressure switch-1 and/or its circuit
•ECM |
Circuit Diagram
| [A]: | ECM connector (View: [a]) | 1. | ECM |
| A1: | Oil pressure switch-1 signal circuit | 2. | Oil pressure switch-1 |
DTC Troubleshooting
| Step | Action | Yes | No |
|---|---|---|---|
| 1 |
Was “Engine and Emission Control System Check” performed?
|
Go to Step 2.
|
|
| 2 |
Oil pressure switch signal circuit check
1)When ignition is “OFF”, disconnect “D01” connector from ECM and oil pressure switch-1 connector.
2)Check for proper terminal connection to “D01” connector and oil pressure switch-1 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 •Voltage of “A1” circuit: approx. 0 V (When ignition is “ON”) Is check result OK?
|
Go to Step 3.
|
Repair or replace defective wire harness.
|
| 3 |
Oil pressure switch-1 check
1)Check oil pressure switch-1.
Is check result OK?
|
Replace ECM and recheck DTC.
|
Replace oil pressure switch-1.
|