NGC

*ENGINE CRANKS BUT DOES NOT START

For a complete wiring diagram Consult Diagrams/Electrical.





Diagnostic Test

1. UNDERCHARGED BATTERY

NOTE: The battery must be fully charged and in good condition. An undercharged battery may produce invalid test results.

Test the battery.
Were any problems found?

Yes

- Charge or replace the battery as necessary and retest.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 2

2. SYSTEM DTCS PRESENT

NOTE: If the battery was low, make sure the battery is properly charged and attempt to start the vehicle. Crank the engine for 15 seconds, 3 consecutive times. This will allow any DTCs to set that may have been erased due to a dead battery.

With the scan tool, select System DTCs to read DTCs in all modules. If any DTCs are present, perform the appropriate diagnostic procedure before continuing with this test. If a no response condition is detected in any module, perform the appropriate diagnostic procedure.
Were any problems found?

Yes

- Perform the appropriate diagnostic procedure and repair as necessary. If any pending DTCs are detected, perform the diagnostic procedure as if the DTC is active.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 3

3. PCM POWER OR GROUND CIRCUIT OPEN OR HIGH RESISTANCE
Turn the ignition off.
Disconnect the PCM harness connector(s).
Using a 12 volt test light, check all PCM power and ground circuits.

NOTE: The test light must be illuminated and bright. Compare the brightness to that of a direct connection to the battery.

Is the test light illuminated and bright when checking each of the PCM power and ground circuits?

Yes

- Repair the PCM power or ground circuit for an open circuit or high resistance.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 4

4. OPEN FUSE(S)
Inspect all of the fuses in the PDC and IPM. If any open fuses are found, check the related circuit(s) for a short to ground or high resistance.
Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 5

5. *CHECKING THE FUEL DELIVERY SYSTEM

NOTE: Verify that the fuel tank is not empty before continuing.

Perform the diagnostic procedure for *CHECKING THE FUEL DELIVERY SYSTEM. Checking the Fuel Delivery System
Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 6

6. FUEL CONTAMINATION
Check the fuel system for contamination.
Was any evidence of fuel contamination found?

Yes

- Clean and repair the fuel system as necessary.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 7

7. *CHECKING THE IGNITION COIL OPERATION
Perform the diagnostic procedure for *CHECKING THE IGNITION COIL OPERATION. Checking the Ignition Coil Operation
Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Go to 8

8. *CHECKING THE ENGINE MECHANICAL SYSTEM
Perform the diagnostic procedure for *CHECKING THE ENGINE MECHANICAL SYSTEM. Checking the Engine Mechanical System
Were any problems found?

Yes

- Repair as necessary.
- Perform the PCM Verification Test.Powertrain Verification Test

No

- Test complete. Search for any Technical Service Bulletins that may apply.