Legacy Outback Ltd Sedan F4-2.5L SOHC (2000)
Oil Pressure Sender: Description and Operation
Oil Pressure Switch
The oil pressure switch is located on the front right upper portion of the cylinder block. The purpose of this switch is to monitor the operation of the
oil pump as well as the lubricating oil pressure when the engine is running.
1) When oil pressure does not build up (with ignition switch "ON"):
The diaphragm is pushed toward the cylinder block by spring force (equivalent to the specified oil pressure). This closes the contact point to
illuminate the oil pressure warning light in the combination meter.
2) When oil pressure reaches the specified value (after engine starts):
After oil pressure reaches the specified value of [14.7 kPa (0.15 kg/cm2, 2.1 psi)] , the diaphragm, pushed by oil pressure, overcomes the spring
force. This opens the contact point to turn the oil pressure warning light OFF.
