Test Description

The numbers below refer to the step numbers on the diagnostic table.

2: The listed DTCs can cause a no start. If a DTC is set, diagnose the DTC before using this diagnostic procedure.
4: This step tests for the correct operation of the crankshaft position (CKP) sensor. If there is a condition with the CKP sensor or circuits, engine speed will not be displayed on the scan tool. Depending on the circuit failure, DTC P0337 may not set.
5: It is important to test for the presence of spark from all of the ignition wires.
6: This step tests for proper operation of the ECM control of the fuel pump circuit.

Engine Cranks but Does Not Run

Step	Action	Values	Yes	No
Schematic Reference: Engine Controls Schematics Connector End View Reference: Engine Control Module (ECM) Connector End Views or Engine Controls Connector End Views
1	Did you perform the Diagnostic System Check - Engine Controls?	-	Go to Step 2	Go to Diagnostic System Check - Engine Controls
2	Crank the engine over for 15 seconds. Turn ON the ignition, with the engine OFF. Observe the DTC information with a scan tool. Does the scan tool display DTC P0118, P0201, P0202, P0203, P0204, P0336, P0337, P0351, P0352, P0601, P0602, P0606, P1626, P1631, P2610, U0167, or U0426?	-	Go to Diagnostic Trouble Code (DTC) List	Go to Step 3
3	Observe the theft deterrent parameter with a scan tool. Does the scan tool display Disabled?	-	Go to Step 4	Go to Diagnostic System Check - Theft Deterrent
4	Crank the engine over. Observe the Engine Speed parameter with a scan tool while the engine is cranking. Is engine speed displayed on the scan tool?	-	Go to Step 5	Go to DTC P0337
5	Turn OFF the ignition. Disconnect a spark plug wire from a spark plug. Install the J 26792 Spark Tester to the spark plug boot and a good ground. Crank the engine while observing the J 26792 . Does the spark tester spark and is the spark consistent?	-	Go to Step 6	Go to Electronic Ignition (EI) System Diagnosis
6	Command the fuel pump ON, with a scan tool. Does the fuel pump turn ON?	-	Go to Step 7	Go to Fuel Pump Electrical Circuit Diagnosis
7	Turn OFF the ignition. CAUTION: Wrap a shop towel around the fuel pressure connection in order to reduce the risk of fire and personal injury. The towel will absorb any fuel leakage that occurs during the connection of the fuel pressure gage. Place the towel in an approved container when the connection of the fuel pressure gage is complete. Install the J 34730-1A Fuel Pressure Gage. Refer to Fuel Pressure Gage Installation and Removal . Turn ON the ignition, with the engine OFF. Command the fuel pump ON, with a scan tool. Is the fuel pressure within the specified range while the fuel pump is operating?	380-427 kPa (55-62 psi)	Go to Step 8	Go to Fuel System Diagnosis
8	Inspect for the following conditions: Collapsed air intake duct to the throttle body. Restricted air filter element. Spark plugs for being gas or coolant fouled. If the spark plugs are fouled, determine what caused the condition, refer to the following procedures: Symptoms - Engine Mechanical in Engine Mechanical - 1.6L (L91). SPARK PLUG INSPECTION Spark Plug Replacement Test for a restricted exhaust system. Refer to Restricted Exhaust in Engine Exhaust. Test for water, alcohol, or other fuel contamination. Refer to Alcohol/Contaminants-in-Fuel Diagnosis (W/O Special Tool) or Alcohol/Contaminants-in-Fuel Diagnosis (W/Special Tool) . Engine mechanical condition, for example worn timing belt or low compression. Refer to Symptoms - Engine Mechanical or Timing Belt Inspection in Engine Mechanical - 1.6L (L91). Test for high resistance in the manifold absolute pressure (MAP) sensor circuits. Also test for a skewed sensor. A circuit with high resistance or a skewed sensor will cause a no start condition. Test for an engine coolant temperature that is not close to the actual engine temperature. Refer to DTC P0115 . Did you complete the action?	-	Go to Step 9	-
9	With a scan tool, clear the DTCs. Attempt to start the engine. Does the engine start and continue to operate?	-	Go to Step 10	Go to Step 2
10	Allow the engine to idle. Allow the engine to reach operating temperature. Observe the DTC information with a scan tool. Are there any DTCs that have not been diagnosed?	-	Go to Diagnostic Trouble Code (DTC) List	System OK