*ENGINE CRANKS BUT DOES NOT START





For a complete wiring diagram Refer to Section 8W.



Possible Causes
  
NO START PRE-TEST
  
POWERTRAIN FUSES OPEN
  
SECONDARY INDICATORS PRESENT
  
ENGINE MECHANICAL PROBLEM
  
(F142) ASD RELAY OUTPUT CIRCUIT OPEN
  
FUEL CONTAMINATION
  



Diagnostic Test

1.NO START PRE-TEST

NOTE: The following list of items must be checked before continuing with any no start tests.













Were any problems found?

Yes


No
  • Go To 2

2.OPEN FUSE



Are any of the fuses open?

Yes


No
  • Go To 3

3.SECONDARY INDICATORS PRESENT




Are there any Secondary Indicators present while cranking the engine?

Yes
  • Refer to the Engine Electrical Diagnostics group and perform the tests related to the secondary indicator that is reported by the scan tool.
  • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)


No
  • Go To 4

4.POSSIBLE MECHANICAL PROBLEMS






Are there any engine mechanical problems?

Yes


No
  • Go To 5

5.(F142) ASD RELAY OUTPUT CIRCUIT OPEN







CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.




Is the resistance below 5.0 ohms?

Yes
  • Go To6


No

6.FUEL PUMP DELIVERY




Was the No Start condition solved after following the above diagnostic test?

Yes
  • Test Complete.


No
  • Check for contamination/water in the fuel. Make sure the fuel being used in this vehicle meets manufactures Fuel Requirement, refer to the service manual.
  • Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)