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12. Install the intake manifold (Refer to 9 - ENGINE/ MANIFOLDS/INTAKE MANIFOLD - INSTALLA- 13. Fill engine oil. 14. Reconnect the negative battery cable. 15. Start engine and check for leaks. SENSOR/SWITCH-OIL PRESSURE DESCRIPTION The 3 wire, solid-state engine oil pressure sensor (sending unit) is located in an engine oil pressure gallery. OPERATION The oil pressure sensor uses three circuits. They are: • A 5 volt power supply from the Powertrain Control Module (PCM) • A sensor ground through the PCM’s sensor return • A signal to the PCM relating to engine oil pressure The oil pressure sensor has a 3 wire electrical function very much like the Manifold Absolute Pressure (MAP) sen- A 5 volt supply is sent to the sensor from the PCM to power up the sensor. The sensor returns a voltage signal 9 - 1260 ENGINE - 3.7L SERVICE INFORMATION WK |