Q7 Quattro V8-4.2L (BAR) (2008)
Engine Oil Pressure: Testing and Inspection
Oil pressure and Oil Pressure Switch, Checking
Special tools, testers and auxiliary items required
‹› Oil Pressure Gauge (V.A.G 1342) with Adapter (V.A.G 1342/14)
‹› Voltage Tester (V.A.G 1527B)
‹› Connector Test Set (V.A.G 1594C)
Procedure
‹› Oil level OK
‹› Engine oil temperature approximately 80 °C / 176 °F
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Remove Oil Pressure Switch (F1). Refer to => [ Oil Pressure Switch ] See: Oil Pressure Sender/Service and Repair.
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Connect (V.A.G 1342) with (V.A.G 1342/14) to hole for oil pressure switch.
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Screw oil pressure switch - 2 - into (V.A.G 1342).
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Place the brown wire of oil pressure gauge on Ground (GND).
Oil Pressure Switch, Checking
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Connect (V.A.G 1527 B) using adapter cables from (V.A.G 1594 C) to oil pressure switch and battery plus ("+").
‹› LED must not light up.
If LED lights up:
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Replace Oil Pressure Switch.
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Start engine.
‹› While starting engine, watch Pressure Tester and LED as oil pressure switch may open during start.
‹› The LED must illuminate at 1.2 to 1.6 bar.
If LED does not light up:
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Replace Oil Pressure Switch.
Oil Pressure, Checking