Golf L4-1588cc 1.6L DSL SOHC (1987)
Oil Pressure Sender: Testing and Inspection
Oil Pressure Warning System, Checking
Work sequence
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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
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test lamp must go out at 0.15-0.45 bar If not, replace oil pressure switch
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disconnect wire 1 from 0.3 bar switch and connect as follows
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connect wire 1 to 1.4 bar oil pressure switch (black insulation)
^
test lamp must illuminate at 1.2-1.6 bar pressure. If not replace oil pressure switch
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continue increasing RPM. Oil pressure must be min. 2.0 bar at 2000 RPM and at 80°C