Engine Cranks, But Will Not Run

Diagram Chart:

Diagnostic Chart:

Diagram Chart:

DESCRIPTION

This table assumes that the battery condition and the engine cranking speed are OK. If not, refer to Starting and Charging for diagnosis. Also, make sure that there is adequate fuel in the tank.

DIAGNOSTIC AIDS

^ Use the Connector Test Adapter kit J 35616-A for any test that requires probing the ECM harness connector or a component harness connector. Using this kit will prevent damage to the harness connector terminals

^ Unless the engine enters Clear Flood at the first indication of a flooding condition, a no start may result.

^ Check the duct work between the Mass Air Flow (MAF) sensor and the throttle body for air leaks.

^ A malfunctioning MAF sensor may cause a no start or a stall after start. If this is suspected, disconnect the MAF sensor. The ECM will ignore the MAF sensor and default to calculated air flow. If this corrects the condition and the connections are OK, replace the MAF sensor.

^ If the steps above check OK, refer to Symptoms / Hard Start for diagnosis. Testing and Inspection

TEST DESCRIPTION

The number(s) below refer to step numbers on the diagnostic table.

2. These DTCs are for systems/components which if operating improperly can cause a no-start.

3. If the vehicle is completely cool (overnight), the ECT and the IAT should be within a few degrees of each other.

5. This engine has a Distributorless Ignition System (DIS). A pair of cylinders share one coil in the following arrangement: 1 and 4, 2 and 5, 3 and 6.

11. Symptoms / Hard Start contains more detailed information on the items listed in this step as well as additional diagnostic aids. Testing and Inspection

14. Recheck the system for any multiple problems that may be related (for example, fouled spark plugs that were caused by a fuel system problem). Also, some engine mechanical problems could cause the engine to crank but not start.