broiler in oven warms up, but not red hot.

Everything works on oven but the broiler. The broiler gets warm to the touch, but stays black, not glowing red. It is a two piece element and both sides get warm only. Checked resistance of the broiler coil (there are three terminals). Inside terminal to inside terminal is 35 Ohms. Outside terminal to outside terminal is 70 Ohms. Checked selector switch with Ohm meter as per wiring schematic function test. Switch checks good. All three wires from selector switch to broiler element check good at 0.2 Ohms each. Any suggestions on what could be wrong?

Thanks,

Robin