Toyota Corolla 1988-1997 Repair Guide

EGR Gas Temperature Sensor

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TESTING



See Figures 1 and 2

  1. Remove the sensor. Place the tip of the sensor in a pot of heated oil.
  2.  
  3. Using an ohmmeter, measure the resistance between the two terminals. It should be as follows:
  4.  



Click image to see an enlarged view

Fig. Fig. 1: Wiring schematic of the EGR temperature sensor circuit



Click image to see an enlarged view

Fig. Fig. 2: Submerge the sensor tip in oil and measure the resistance of the sensor

  1. If the resistance is not as specified, replace the sensor.
  2.  

REMOVAL & INSTALLATION



  1. With the ignition OFF , unplug the electrical connector to the sensor.
  2.  
  3. Using the proper sized wrench, carefully unscrew the sensor from the engine.
  4.  

To install:
  1. Install the sensor.
  2.  
  3. Plug the electrical connector into the sensor.
  4.  
  5. Refill the coolant to the proper level. Road test the vehicle for proper operation.
  6.  

 
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