Toyota Celica 1986-1993 Repair Guide

Sending Units and Sensors

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REMOVAL & INSTALLATION




CAUTION
When draining the coolant, keep in mind that cats and dogs are attracted by the ethylene glycol antifreeze, and are quite likely to drink any that is left in an uncovered container or in puddles on the ground. This will prove fatal in sufficient quantity. Always drain the coolant into a sealable container. Coolant should be reused unless it is contaminated or has seen several years of use. On models with an air bag, wait at least 30 seconds from the time that the ignition switch is turned to the lock position and the battery is disconnected before performing any further work.

Water Temperature Sender


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Fig. Fig. 1 Location of sending units3S-GE engine



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Fig. Fig. 2 Location of sending units2S-E and 3S-FE engines



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Fig. Fig. 3 Location of sending units3S-GTE engine

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Disconnect the sensor electrical connector.
  6.  
  7. Remove the sensor, using a suitable tool.
  8.  

To install:

  1. Installation is the reverse of removal. Fill the cooling system and check for leaks.
  2.  



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Fig. Fig. 4 Location of sending units4A-FE and 5S-FE engines



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Fig. Fig. 5 Location of cooling fan switch1988-89



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Fig. Fig. 6 Location of cooling fan system components1990-93

Cooling Fan Switch

The cooling fan switch is also known as the water temperature switch (not to be confused with the water temperature sender).

  1. Disconnect the negative battery cable.
  2.  
  3. Drain the cooling system.
  4.  
  5. Disconnect the switch electrical connector.
  6.  
  7. Remove the switch from the thermostat housing area or the radiator.
  8.  


CAUTION
Make sure the battery has been disconnected and the ignition switch is off so that personal injury does not occur due to unexpected fan operation.

To install:

  1. Installation is the reverse of the removal procedure. Fill the cooling system and check for leaks.
  2.  

Oil Pressure Sender
  1. Disconnect the negative battery cable.
  2.  
  3. Raise and safely support the vehicle, if added clearance is necessary.
  4.  
  5. Disconnect the electrical connector from the oil pressure sender.
  6.  
  7. Remove the oil pressure sender, using a suitable tool.
  8.  

To install:

  1. Installation is the reverse of the removal procedure. Check for oil leaks.
  2.  

 
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