RAM 2500 Van V8-5.9L VIN Z (1997)
Oil Pressure Gauge: Description and Operation
Circuit Operation
CIRCUIT OPERATION
The case grounded oil pressure sensor is a variable resistor and switch. The variable resistor in the sensor connects to the oil pressure gauge on
circuit G60. The switch in the sensor connects to the oil pressure warning lamp on circuit G6.
Circuit G5 from fuse 17 in the fuse block connects to the instrument cluster and supplies battery voltage to oil pressure gauge. The gauge uses two
coils. One coil receives fixed current, circuit G60 connects the other coil to the pressure sensor. As oil pressure changes, the variable resistor in the
sensor changes the current flow through the second coil in the gauge. A change in current flow alters the position of the gauge pointer.
Circuit Z1 provides ground for the oil pressure gauge.
