check engine SKODA OCTAVIA 1997 1.G / (1U) 1.8 92kw Engine Workshop Manual

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17Lubrication System
Edition 08.96

Testing oil pressure and oil pressure switch
Special tools, testers and aids required
Oil pressure tester (e.g. V.A.G 1342)
Diode test lamp (e.g. V.A.G 1527)
Adapter cable set (e.g. V.A.G 1594)
Current flow diagram
Operation of dynamic oil pressure warning system
Testing warning lamp After ignition on („terminal 15 on“) and engine not running, the oil pressure warning lamp flashes (not on models with Auto Check System).
Warning criteria
Engine not running and oil pressure switch closed.
Coolant temperature greater than 60 °C, engine speed greater than 1500 rpm and oil pressure switch open.
At an engine speed of more than 5000 rpm an active oil warning is not cancelled, irrespective of the position of the oil pressure switch.
If the voltage supply of the control unit is o.k. (terminal 15) and the oil pressure switch is open for longer than 0.5 seconds at engine speeds of more than 1500 rpm, this is stored. If this condition occurs three times during „terminal 15 on“, the warning becomes or remains active even at engine speeds of less than 1300 rpm.
Test conditions
Engine oil level o.k.; inspect page 17-10
Oil pressure warning lamp (K3) should come on when ignition switched on.
The o.k. readout on vehicles with Auto Check System should come on (select symbol)
Engine oil temperature at least 80 °C (radiatorfan should have cut in once)

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20Fuel Supply System




Edition 08.96

If the fuel pump does not run:
- Unbolt cover (below the rear seat).
- Release 4-pin connector form the flange at
the fuel tank and unplug.
- Connect hand-held multimeter (e.g. V.A.G
1526) with auxiliary cables (e.g. from V.A.G
1594) to the outer contacts of the connector.
- Operate remote control. Specification: about battery voltage
If the specification is not achieved:
- Determine open circuit in the wiring on the basis of the current flow diagram and rectify:
⇒ Current Flow Diagrams, Electrical Fault Finding and Fitting Locations binder
If the specification is achieved:
- Use MP 1-227 to unscrew union nut.
- Check whether the electric cables between flange and fuel pump are connected and test
for continuity.
If no open circuit in the wiring can be found:
Fuel pump faulty.
- Replace fuel delivery unit ⇒ page 20-5.
Testing delivery of the fuel pump
Special tools, testers and aids required♦ Adapter V.A.G 1318/17
♦ Measuring vessel
Test conditions
Battery voltage at least 12 V
Voltage supply o.k.
Fuel filter o.k.

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Edition 08.96



 
Adjusting throttle cable
Notes:
The throttle cable is very sensitive to kinking
and should be treated with particular care
when installing.
A single slight kink can subsequently resultin the cable fracturing when driving. Throttle
cables which have been kinked, musttherefore not be installed.
When installing, ensure that the throttle cableis properly aligned between its supporting
points and the cable attachment points.
Special tools, testers and aids required Spring stretcher rod
Procedure
- Attach throttle cable to the accelerator pedal and to the cam of the throttle valve control unit.
- Pull off locking element for throttle cable at the detent.
- Depress accelerator pedal to full throttle position.
Note:
A second mechanic is required for this step ordepress accelerator pedal using spring stretcher
rod supported against steering wheel.
Models with manual gearbox
- Adjust throttle cable by repositioning the detent on the support bracket so that full throttle position is reached at the throttle
valve lever.
Models with automatic gearbox
- Adjust throttle cable by repositioning the detent on the support bracket so that the throttle valve has opened fully and the kickdown switch is heard to click.
For all models
- Release accelerator pedal or remove stretcher rod.
- After completing adjustment, check idling speed and full throttle stop of the throttle valve.