Oil Pressure Warning Indicator Not Operating Properly

Test 1 - 3:

Test 4 - 8:

Test 9:

SYMPTOM
OIL PRESSURE WARNING INDICATOR NOT OPERATING PROPERLY

POSSIBLE CAUSES
- Instrument cluster - sense circuit shorted to ground
- Engine oil pressure less than 27.6 kPa (4 PSI) cold
- Oil pressure switch - open
- Oil pressure switch sense circuit shorted to ground
- Engine oil pressure less than 27.6 kPa (4 PSI) warm
- Oil pressure switch sense circuit open
- Instrument cluster - sense circuit open
- Oil pressure switch - shorted to ground