Passport LX 2WD V6-3.2L SOHC (6VD1) (1997)
Temperature Gauge: Description and Operation
The engine coolant temperature gauge consists of two intersecting coils wound around a permanent magnet rotor. When voltage through fuse C-10 is
applied to the coils, a magnetic field is generated. This causes the rotor to rotate and the gauge needle to move. The magnetic field is controlled by the
thermo unit. As the resistance in the thermo unit varies, current through the gauge coils changes and the gauge needle moves according to the changing
magnetic field. See the chart below for approximate resistance values for the sending unit under normal operating conditions.
Engine Coolant Engine Coolant Sending
Temperature Temperature Unit's Resistance
140 °F/60 °C 160 ohms
150 °F/66 °C 135 ohms
160 °F/71 °C 110 ohms
170 °F/77 °C 90 ohms
180 °F/82 °C 75 ohms
190 °F/88 °C 60 ohms