Camry 2007

Diagnosis & Testing

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  1. Check for DTCs and follow the recommended procedures.
  2.  
  3. Remove the ignition coil assembly and spark plug.
  4.  
  5. Disconnect the 6 fuel injector connectors.
  6.  
  7. Install the spark plug to ignition coil, and connect the ignition coil connector.
  8.  
  9. Ground the spark plug.
  10.  
  11. Check if spark occurs at each spark plug while the engine is being cranked
  12.  
  13. Check that the ignition coil connector is securely connected.
  14.  
  15. Perform a spark test on each ignition coil.
    1. If no spark is seen, replace the coil with a known good coil and retest.
    2.  
    3. If spark is seen, replace defective coil.
    4.  

  16.  
  17. If no spark is seen, retest with known good spark plug.
    1. If spark is seen, replace defective spark plug.
    2.  
    3. If no spark is seen, test power supply to coil.
    4.  

  18.  
  19. Test power to ignition coil.
    1. Turn the ignition switch on (IG).
    2.  
    3. Check that there is battery voltage at the ignition coil positive (+) terminal.
    4.  
    5. If no voltage is present, test wiring between ignition switch and ignition coil.
    6.  
    7. If voltage is present, measure resistance of Crankshaft Position Sensor.
      NOTE
      Cold" and "Hot" mean the temperature of the coils themselves.


      NOTE
      "Cold" is from 14°F (-10°C) to 122°F (50°C) and "Hot" is from 122°F (50°C) to 212°F (100°C).

    8.  

  20.  
  21. Measure the resistance according to the value(s). If the resistance is not as specified, replace the crankshaft position sensor.
    1. Cold: 835 to 1,400 ohms.
    2.  
    3. Hot: 1,060 to 1,645 ohms.

      Click image to see an enlarged view

      Fig. Crankshaft position sensor pinout

    4.  
    5. If Crankshaft Position Sensor test fails, replace sensor.
    6.  
    7. If sensor is good, test IGT signal from ECM.
    8.  

  22.  
  23. Use wiring diagrams to test IGT signal from ECM
  24.  
  25. Reinstall spark plugs
  26.  
  27. Connect the 6 fuel injector connectors.
  28.  
  29. Reinstall the ignition coil assembly.
  30.  

 
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