Toyota Celica 1986-1993 Repair Guide

Fuel Pump Relay

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TESTING





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Fig. Fig. 1 Testing fuel pump relay1988-89 3S-GTE engine shown



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Fig. Fig. 2 Testing fuel pump relay1990-93 3S-GTE engine shown

3S-GTE Engine
  1. Using an ohmmeter, test for continuity between terminals 1 and 3. Continuity should be present.
  2.  
  3. There should also be continuity between terminals 2 and 3.
  4.  
  5. There should be no continuity between terminals 3 and 4.
  6.  
  7. Apply battery voltage and ground to terminals 1 and 3; with voltage applied, continuity should not be present at terminals 2 and 3.
  8.  
  9. Again apply battery voltage and ground to terminals 1 and 3; with voltage applied, continuity should be present at terminals 3 and 4.
  10.  
  11. If any test condition is not met, the relay must be replaced.
  12.  

 
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