The Engine Cranks but Does Not Run diagnostic table is an organized approach to identifying a condition that causes an engine not to start. The Engine Cranks but Does Not Run diagnostic table directs the service technician to the appropriate system diagnosis.
The Engine Cranks but Does Not Run diagnostic table assumes the following:
• | The battery is completely charged--Refer to Battery Inspection/Test in Engine Electrical. |
• | The engine cranking speed is acceptable |
• | There is adequate fuel in the fuel tank |
Step | Action | Value(s) | Yes | No | ||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | Did you perform the Diagnostic System Check-Engine Controls? | -- | Go to Step 2 | |||||||||||||||
2 | Does the scan tool display any U type DTCs ? | Go To Diagnostic Trouble Code (DTC) List In Data Link Communications | Go to Step 3 | |||||||||||||||
3 |
Does the scan tool display DTCs P0102, P0108, P0201-P0206, P0230, P0231, P0232, P0341, P0342, P0343, P0335, P0338, P0601, P0602, P0603, P0604, P0606, P0610, P0627, P0628, P0629, P1629, P1630, P1631, P1682? | -- | Go to Step 4 | |||||||||||||||
4 | Does the scan tool display any body control module (BCM) vehicle theft deterrent (VTD) DTCs? | -- | Go to Diagnostic Trouble Code (DTC) List in Theft Deterrent | Go to Step 5 | ||||||||||||||
5 | Command the fuel pump ON with a scan tool. Does the fuel pump operate? | -- | Go to Step 6 | |||||||||||||||
6 |
Important: The fuel injector test lamp will be dim, which is normal. If using a different fuel injector test lamp, the bulb resistance must be 4 ohms or less. Does the fuel injector test lamp flash for all IC circuits? | -- | Go to Step 7 | |||||||||||||||
7 |
Is the fuel pressure within the specified range while the fuel pump is operating? | 345- 413 kPa (50-60 psi) | Go to Step 8 | Go to Fuel System Diagnosis | ||||||||||||||
8 | Inspect for the following conditions:
Did you complete the action? | -- | Go to Step 9 | -- | ||||||||||||||
9 |
Does the engine start, then continue to run? | -- | Go to Step 10 | Go to Step 2 | ||||||||||||||
10 |
Are there any DTCs that have not been diagnosed? | -- | System OK |