SW L4-1.9L DOHC VIN 7 (1993)
Oil Pressure Warning Lamp/Indicator: Description and Operation
The oil pressure indicator lamp is switched to ground by the oil pressure switch on the SOHC engine or by the oil pressure sender/switch on the DOHC
engine. When the lamp is switched to ground, ignition voltage flows through the lamp, allowing it to illuminate. This indicates to the vehicle's operator
that the oil pressure has dropped below a specified limit.
The oil pressure indicator lamp is illuminated, for approximately one to two seconds, until the oil pressure raises enough to open the oil pressure switch,
for a bulb check.