For a complete wiring diagram Refer to Section 8W.Possible CausesCURRENT PCM DTCSCURRENT SKIM DTCSTHROTTLE POSITION SENSOR SWEEPTP SENSOR NO.1 VOLTAGE GREATER THAN 0.92 VOLTS WITH THROTTLE CLOSEDECT SENSOROTHER POSSIBLE CAUSES FOR START AND STALL CONDITIONFUEL CONTAMINATION1. CHECKING DTCSIgnition on, engine not running.With a scan tool, select View DTCs.Are any DTCs present?YesRefer to the appropriate Diagnostic Procedure.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) NoGo To 22. CHECKING SKREEM DTCSIf you are unable to communicate with the SKIM/SKREEM, refer to the VEHICLE THEFT AND SECURITY ELECTRICAL DIAGNOSTICS in Section 8 and perform the appropriate diagnostics.With the scan tool, read the SKIM codes.Are there any SKIM DTCs?YesRefer to the Sentry Key Vehicle Theft Security Electrical Diagnostics in Section 8.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) NoGo To 33. TP SENSOR SWEEPIgnition on, engine not running.With the scan tool read TP Sensor voltage.While monitoring the scan tool, slowly open and close the Throttle on vehicles equipped with a manual throttle body.On vehicles equipped with an electronic throttle body, use a scan tool to perform the pedal follower test and monitor both TP Sensor voltage readings.Was the voltage change smooth?YesGo To 4NoReplace the Throttle Position Sensor on the manual throttle body or the Throttle Body Assembly on an ETC throttle body.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 4. TP SENSOR NO.1 VOLTAGE GREATER THAN 0.92 VOLTS WITH THROTTLE CLOSEDWith the scan tool, read Throttle Position Sensor No.1 voltage. Throttle must be against its stop.Is the voltage 0.92 or less with the Throttle closed?YesGo To 5NoCheck for a binding throttle condition. If OK, replace the Throttle Position Sensor or the Throttle Body Assembly for ETC vehicles.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 5. ECT SENSOR OPERATIONFor this test to be valid, the thermostat must be operating correctly.This test works best if performed on a cold engine (cold soaked).If the vehicle was allowed to sit over night with no engine start, coolant temperature should be near ambient temperatures.Ignition on, engine not running.With the scan tool, read the ECT value. If engine coolant temperature is above 82° C (180° F), allow the engine to cool until 65° C (150° F) is reached.Start the engine.During engine warm-up, monitor the Engine Coolant Temperature value. The temperature value change should be a smooth transition from start up to normal operating temp 82° C (180° F). The value should reach at least 82° C (180° F).Did the Engine Temperature value increase smoothly and did it reach at least 82° C (180° F)?YesGo To 6NoReplace the Engine Coolant Temperature Sensor.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) 6. OTHER POSSIBLE CAUSES OF START AND STALL CONDITIONThe following additional items should be checked as a possible cause for a start and stall condition.Refer to any Technical Service Bulletins (TSBs) that may apply to the symptom.The exhaust system must be free of any restrictions.The engine compression must be within specifications.The engine valve timing must be within specifications.The engine must be free from vacuum leaks.The throttle body must be free of carbon buildup and dirt.Do any of the above conditions exist?YesRepair as necessary.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE) NoGo To 77. FUEL PUMP DELIVERYVerify that the Fuel tank is not empty before continuing.Follow the diagnostics for Checking Fuel Delivery in this manual.Was the No Start condition solved after following the above diagnostic test?YesTest Complete.NoCheck for contamination/water in the fuel. Ensure the fuel being used in this vehicle meets manufactures Fuel Requirement, refer to the service manual.Perform the POWERTRAIN VERIFICATION TEST. (Refer to 9 - ENGINE - STANDARD PROCEDURE)