EGR Temperature Sensor: Testing and Inspection

EGR Sensor Temperature Chart:

Remove the sensor from its housing. The EGRT should be tested in boiling water. Be sure that only the lower part of the component is immersed.

The temperature of the component should be measured with an accurately calibrated thermometer, (e.g. mercury/glass) make sure that the temperature of the component has stabilized. Using a digital multimeter set to ohms, measure the resistance across the connector blades. Compare the reading obtained to the chart. Resistance should be within the band.

If the reading falls outside the band, recheck temperature and resistance measurement. Reject components which fall outside of the tolerance.