Engine Cranks But Does Not Run

ENGINE CRANKS BUT DOES NOT RUN

DESCRIPTION
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 Starting and Charging. Battery Inspection/Test
- The engine cranking speed is within specifications. Refer to Engine Cranks Slowly in Starting and Charging. Engine Cranks Slowly
- There is adequate fuel in the fuel tank.

DIAGNOSTIC AIDS
- The ECM uses the camshaft position sensors to determine engine speed and position when there is a CKP sensor condition.
- The engine will operate with a CKP sensor condition only if the ECM has stored the learned reference position of the camshafts in memory. With a crankshaft position sensor condition other than a short to voltage in the signal circuit, the engine will go into a limp home mode after a hard restart. The ECM then calculates engine speed from one of the camshaft position sensors. During a limp home mode the following additional DTCs may set and should be ignored:
- DTC P0324 Knock Sensor (KS) Module Performance
- DTC P1011 Intake Camshaft Position Actuator Park Position Bank 1
- A short to voltage in the signal circuit of the CKP sensor will cause the engine to stall or not start and a DTC will not set.
- Refer to Symptoms - Computers and Control Systems and Hard Start for further diagnosis. Symptom Related Diagnostic Procedures Hard Start

TEST DESCRIPTION

Steps 1-3:

Steps 4-5:

Step 6:

Steps 7-8:

The numbers below refer to the step numbers on the diagnostic table.
2. This step determines if there is a DTC causing the no start condition.
4. This step determines if the fuel pump is turning on. An audible sound can be heard at the fuel injector rail when the fuel pump is turned ON.