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Home >> Chrysler >> 2009 >> PT Cruiser Limited >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> DRIVEABILITY - Gas - Non-DTC Diagnostics >> Diagnosis And Testing >> Engine Cranks But Does Not Start >> Diagnostic Test

Diagnostic Test

  1. NO START PRE-TEST 
    NOTE: The following list of items must be checked before continuing with any no start tests.
    1. The battery must be fully charged and in good condition. A low charged battery may produce invalid test results. If the battery is low, charge the battery and then attempt to start the vehicle by cranking 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.
    2. Attempt to communicate with the PCM using the scan tool. If the PCM is experiencing a no response condition, refer to Electrical Electronic Control Module Electrical Diagnostics for the proper tests.
    3. Read the PCM DTCs with the scan tool. If any DTCs are present, they must be repaired before continuing with any other No Start diagnostic tests. Refer to related P-code that is reported by the PCM.
    4. Inspect all fuses in the TIPM and the Junction Box. If an open fuse(s) is found, check the related circuit(s) for a short to ground or high resistance.
    5. Using a test light, check the Powers and Ground to the PCM. The test light must illuminate brightly as if jumpered across a battery.
    6. Attempt to communicate with the Instrument Cluster and VTSS. If you are unable to establish communications. Refer to Non-DTC Diagnostics/Communication - Diagnosis and Testing for the proper Diagnostic procedures.
    7. The Sentry Key Immobilizer System must be operating properly. Check for proper communication with the scan tool and check for DTCs that may be stored in the Wireless Control Module (WCM). Repair the DTC(s) before continuing.
    8. If no DTCs are found, using the scan tool, select Clear PCM (BATT Disconnect).
    9. Crank the engine several times. Using the scan tool, read DTCs. If a DTC is present perform the DTC diagnostics before continuing.

      Were any problems found?

      Yes 

      No 

      • Go to step  2
  2. OPEN FUSE 
    1. Check for any open fuses in both TIPM or Junction Block that may be related to the No Start condition.
      NOTE: If an open fuse is found, inspect the related circuit(s) for a short to ground or high resistance.

      Are any of the fuses open?

      Yes 

      No 

      • Go to step  3
  3. SECONDARY INDICATORS PRESENT 
    NOTE: Diagnose only the Secondary Indicators that would cause a no start.
    1. Ignition on, engine not running.
    2. With the scan tool, check the Secondary Indicators while cranking the engine that would cause a no start condition.

      Are there any Secondary Indicators present while cranking the engine?

      Yes 

      No 

      • Go to step  4
  4. POSSIBLE MECHANICAL PROBLEMS 

    Check for any of the following conditions/mechanical problems:

    • ENGINE VALVE TIMING - must be within specifications, check for broken timing components.
    • ENGINE COMPRESSION - must be within specifications.
    • ENGINE EXHAUST SYSTEM - must be free of any restrictions or leaks.

    Are there any engine mechanical problems?

    Yes 

    No 

    • Go to step  5
  5. FUEL PUMP DELIVERY 
    1. Verify that the Fuel tank is not empty before continuing.
    2. Follow the diagnostics for Checking Fuel Delivery. See FUEL SYSTEM .

      Was the No Start condition solved after following the above diagnostic test?

      Yes 

      • Test Complete.

      No 

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