Cabriolet L4-1781cc 1.8L SOHC (JH) (1989)
Oil Pressure Sender: Testing and Inspection
OIL PRESSURE SWITCHES, CHECKING
0.3 (4.4 psi) bar oil pressure switch
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remove 0.3 bar oil pressure switch (brown insulation) insert into test unit and connect wire 1 (blue)
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connect test unit to cylinder head in place of oil pressure switch
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connect test lamp 2 to wire 1 and positive (+) battery terminal
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connect wire 3 (brown) to ground
^ test lamp must illuminate
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start engine and slowly increase RPM
^ test lamp must go out at 0.15-0.45 bar (2.2-6 5 psi) If not. replace oil pressure switch
1.8 bar (26.1 psi) oil pressure switch
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remove 1.8 bar oil pressure switch (white insulation) insert into test unit and connect wire 1 (blue)
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connect test unit to cylinder head in place of oil pressure switch
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connect the test lamp 2 to wire 1 and positive (+) battery terminal
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connect wire 3 (brown) to ground
^ test lamp must illuminate
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start engine and increase speed slowly
^ The test lamp must light up at a pressure of 1.6 - 2.0 bar (23.2-29 psi) it not. replace oil pressure switch
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continue increasing RPM. Oil pressure must be min 2.0 bar (29 psi) at 2000 RPM and at 80°C (176°F)