Toyota Camry 1983-1996 Repair Guide

EGR Gas Temperature Sensor

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OPERATION



The EGR gas temperature sensor is used mostly on California models. It simply indicates the temperature of the EGR exhaust gas to the EGR system.

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: The Exhaust Gas Temperature sensor wiring (1) and harness connector (2)-1MZ-FE engine shown



Click image to see an enlarged view

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

  1. 64-97k ohms at 112°F(50°C)
  2.  
  3. 11-16k ohms at 212°F(100°C)
  4.  
  5. 2-4k ohms at 302°F (150°C)
  6.  

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

REMOVAL & INSTALLATION



See Figure 3

  1. With the ignition OFF , unplug the electrical connector to the sensor.
  2.  



Click image to see an enlarged view

Fig. Fig. 3: The EGR temperature sensor located up underneath the throttle body

  1. Using the proper sized wrench, carefully unscrew the sensor from the engine.
  2.  

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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