## Engine Lubrication

#### Oil Pressure Switch Test

8-4

Oil Pressure Test

1. Remove the oil pressure switch harness (A) from the oil pressure switch (B) and turn up the cover boot.

1. Check for continuity between the positive terminal (C) and the engine (ground).

- There should be continuity when the engine stopped.
- There should not be continuity when engine running.

1. If the oil pressure switch fails to operate, check the engine oil level.

If the engine oil lever is Ok, check the engine oil pressure.

If the engine oil pressure is OK, replace the oil pressure switch.

Oil pressure switch tightening torque:

21 Nm (2.1 kgf/m, 15 lbf/ft)

The oil pressure warning light stays on with the engine running, check the engine oil level.

If the engine oil level is correct, check the engine oil pressure.

1. Connect a tachometer.

1. Remove the engine oil pressure switch and install the oil pressure gauge (A).

1. Start the engine. Shut if off immediately if the oil pressure gauge registers no oil pressure. Repair the problem part before continuing test.

1. Allow the engine to reach operating temperature. The oil pressure should be:

Engine oil temperature: 80°C (176°F)

Engine oil pressure:

At idle: 127 kPa (1.3 kg/cm2, 18.4 psi)

At 4,400 min-1: 392 kPa (4 kg/cm2, 56.8 psi)

1. The oil pressure is not within specifications, inspect the oil pump.

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