System Operation

Test sequence

Operation of flashing LED (red) and buzzer

(1) engine not running - LED must flash
^ ignition ON - buzzer* must not sound

(2) engine running less than 2000 rpm - LED must flash
^ wire (yellow) on 0.3 bar oil pressure - buzzer* must not sound switch pulled off and connected to ground

(3) engine running more than 2000 rpm - LED must flash
^ wire blue/black) on 1.8 bar/1.4 bar** - buzzer must sound oil pressure switch pulled off and connected to ground

* on some cars-early 1983 model production-control unit is so designed that at low engine rpm (oil pressure below 0.3 bar) buzzer sounds ** for Turbo Diesel engine only

Note

If system is still not operating properly, check by Troubleshooting.






Troubleshooting Dynamic oil-pressure system light (LED) does not flash when ignition is switched ON check these first:
^ flashing LED (red) for fuel gauge and coolant temperature gauge is OK









Troubleshooting LED flashes and buzzer sounds while driving car although oil pressure is correct check these first:
^ fuel gauge, coolant-temperature gauge, 0.3 bar and 1.8/1.4 bar oil-pressure switches are OK