100CS Quattro Wagon V6-2.8L (AAH) (1992)
Oil Pressure Sender: Testing and Inspection
Oil Pressure, Sensor/Switch Checking
Oil pressure, oil pressure switch and oil pressure sensor, checking
(Optical and acoustic oil pressure indication)
Test requirements
Oil level OK
Oil pressure warning light -K3- lights when ignition turned on
Auto-Check system indicates OK
Engine oil temperature approx. 80°C (176°F) and radiator fan must have switched on at least once
Checking oil pressure switch and oil pressure sensor electrical functions
- Disconnect harness connectors from oil pressure switch and oil pressure sensor.
- Remove oil pressure sensor or oil pressure switch and install into oil pressure tester VAG 1342.
- Connect cable -2- (brown) to Ground (GND).
- Connect cable -1- (blue) to oil pressure switch or oil pressure sensor.
- Connect VAG 1527B voltage tester to cable -1- and battery positive (B+).
- Start engine and check sensors and switches at the relevant engine speed.
Checking 0-3 bar oil pressure sensor with 0.3 bar oil pressure switch (0-3/0.3 bar sensor)