Fluid Pressure Sensor/Switch: Testing and Inspection

OIL PRESSURE SWITCH INSPECTION [RC4A-EL]

Caution
^ Water or foreign material entering the connector can cause poor connections or corrosion. Be sure that water or foreign material do not enter the connector when disconnecting it.

On-Vehicle Inspection
1. Remove the engine cover.
2. Remove the battery cover.
3. Disconnect the negative battery cable.
4. Remove the catalytic converter.
5. Remove the insulator.





6. Disconnect the solenoid valve connector.





7. Inspect for continuity between the following terminals.





^ Terminal B and J (oil pressure switch B)
^ Terminal A and J (oil pressure switch C)
^ Terminal L and J (oil pressure switch F)
- If there is continuity, inspect the wiring harness between the solenoid connector and oil pressure switches. If there are no malfunctions with the harnesses, inspect the oil pressure switches. (See Off-Vehicle Inspection.)
- If there is no continuity, inspect the oil pressure switches for verify the oil pressure switches are no malfunctions. (See Off-Vehicle Inspection.)

8. Connect the solenoid valve connector.
9. Install the insulator.

Tightening torque
8-11 N-m (82-112 kgf-cm, 72-97 in-lbf)

10. Install the catalytic converter.
11. Connect the negative battery cable.
12. Install the battery cover.
13. Install the engine cover.

Off-Vehicle Inspection
1. Remove the oil pressure switch.





2. Apply 393-490 kPa (4.0-5.0 kgf/cm2, 57-71 psi) of air pressure to the oil pressure switch, and inspect for continuity between the oil pressure switch connector and the oil pressure switch screw.
^ If there is no continuity, replace the oil pressure switch.
3. Not apply of air pressure to the oil pressure switches, and verify for no continuity between the oil pressure switch connector and the oil pressure switch screw.
^ If there is continuity, replace the oil pressure switch.
4. Install the oil pressure switch.