L200 L4-2.2L VIN F (2002)
Oil Pressure Sender: Description and Operation
ENGINE OIL PRESSURE SWITCH
The Engine Oil Pressure (EOP) switch is located in the front of the engine block near the starter motor. The EOP switch is a normally closed switch that
opens when engine oil pressure exceeds 3.6 ± 2.2 psi. The PCM supplies ignition voltage through a resistor to the EOP switch. With ignition On, engine
Off, the PCM EOP input will be low (near 0 volts, switch closed). When the engine is started, and engine oil pressure exceeds 3.6 ± 2.2 psi, the switch
opens and the PCM EOP input goes high (ignition voltage).
OIL PRESSURE TELLTALE - The PCM sends a message to the I/P cluster over the Class II link to turn On the Oil Pressure telltale whenever the
ignition is On and the EOP input at the PCM is low.
