Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPLYMOUTH1984HORIZON BASE, 1.6 AREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 25 (INSTRUMENT PANEL (CONVERTIBLE))TESTINGLOW OIL PRESSURE WARNING LIGHT CIRCUIT TEST
1984 Plymouth Horizon Base, 1.6 A
Low Oil Pressure Warning Light Circuit Test
1984 Plymouth Horizon Base, 1.6 ASECTION Low Oil Pressure Warning Light Circuit Test
WARNING: This page is about a different car, the 1994 Chrysler LeBaron. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
Low oil pressure warning light is controlled by combination oil sending unit.
- Turn ignition on. DO NOT start engine. Low oil pressure warning light should come on as a bulb test and to indicate no oil pressure.
- If light fails to come on, disconnect connector from combination oil sending unit located on engine. See Figure . Using jumper wire, ground switch (light) terminal of connector to engine. See Figure .
- With ignition on, low oil pressure light should come on. If light fails to come on, check for defective bulb, socket or wiring. If light does come on, check combination oil sending unit circuit for proper operation. See COMBINATION OIL SENDING UNIT TEST .
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.