Checking The Oil Pressure Sensor - SELVA MARINE Blue Whale 250 EFI Service Manual

4. Check the oil pressure. Check for oil
leakage and check the oil pump and oil
strainer if out of specification.
NOTE:
• If the oil pressure sensor is removed, the
engine idle speed will increase about 900
r/min due to an oil pressure sensor mal-
function condition. Delete the diagnosis
record using the YDIS after checking the oil
pressure.
• The actual oil pressure may vary depend-
ing on the temperature and viscosity of the
engine oil being used.
Oil pressure (reference data):
600 kPa (6.0 kgf/cm
60 °C (140 °F) with SL 10W-30
engine oil and at 900 r/min

Checking the oil pressure sensor

1. Connect the test harness to the oil pres-
sure sensor.
2. Start the engine and warm it up for 5 min-
utes.
3. Measure the oil pressure sensor input
voltage. Check the wiring harness con-
nection or replace the ECM if out of spec-
ification.
4. Measure the oil pressure sensor output
voltage. Replace if out of specification.
6P23H11
2
, 87.0 psi) at
S6P25030
3.4 V
È
É
È Output voltage
É Oil pressure
Test harness (3 pins): 90890-06869
Oil pressure sensor input voltage
(reference data):
Orange (O) – Black (B)
4.75–5.25 V
Oil pressure sensor output voltage
(reference data):
Pink/white (P/W) – Black (B)
3.4 V at engine idle speed
Power unit
600 kpa
(6.0 kgf/cm 2 ,
S6P25040
87.0 psi)
5-2
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