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Home >> Chrysler >> 2006 >> PT Cruiser Base, 2D Convertible, Standard >> Repair and Diagnosis >> Engine Performance >> Testing & Diagnosis >> 2.4L Engine - DTCS P1854 To U11OC, Fuel Delivery System Check, Symptom Tests & Verification Tests >> Diagnosis And Testing >> P2302-Ignition Coil 1 Secondary Circuit-Insufficient Ionization >> Diagnostic Tests

Diagnostic Tests

  1. 1)  ACTIVE DTC 

    Ignition on, engine not running.

    With a scan tool, read DTCs.

    Is the DTC active at this time? 

    Yes 

    1. Go To  2).

    No 

    1. Go To  9).
  2. 2)  IGNITION COIL OPERATION 
    NOTE: This test must be repeated for the adjacent ignition wire.

    Turn the ignition off.

    Disconnect the ignition wire from the spark plug.

    NOTE: Before continuing inspect the ignition wire for damage or carbon tracking coil or the spark plug insulator boot. If a problem is found, replace the ignition wire.

    Install a spark tester to the ignition wire.

    While cranking the engine observe the spark coming from the spark tester.

    NOTE: A crisp blue spark that is able to jumper the gap of the spark tester should be generated.

    Is a good spark generated? 

    Yes 

    1. Ensure the cylinder is operating properly. If OK, replace the Spark Plug.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 

    No 

    1. Go To  3).
  3. 3)  IGNITION WIRE 
    NOTE: This test must be repeated for the adjacent ignition wire.

    Turn the ignition off.

    Remove the ignition wire.

    Measure the resistance of the ignition wire.

    Is the resistance below 10K ohms? 

    Yes 

    1. Go To  4).

    No 

    1. Replace the Ignition Wire.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 
  4. 4)  (K344) ASD RELAY OUTPUT CIRCUIT 
    Fig 1: Checking ASD Relay Output Circuit
    GC0041628Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Ignition Coil harness connector.

    Turn the ignition on.

    With the scan tool, actuate the ASD Relay.

    Using a 12-volt test light connected to ground, probe the (K344) ASD Relay Output circuit in the Ignition Coil harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Go To  5).

    No 

    1. Repair the (K344) ASD Relay Output circuit.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 
  5. 5)  IGNITION COIL 
    Fig 2: CHECKING IGNITION COIL CONTROL CIRCUIT
    GC0041629Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Ignition Coil harness connector.

    Using a 12-volt test light connected to 12-volts, probe the (K19) Coil Control No. 1 circuit.

    Crank the engine for 5 second while observing the test light.

    Does the test light blink/flicker? 

    Yes 

    Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 

    No 

    1. Go To  6).
  6. 6)  (K19) COIL CONTROL NO. 1 CIRCUIT OPEN 
    Fig 3: MEASURING RESISTANCE OF THE COIL CONTROL NO. 1 CIRCUIT
    GC0041776Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Ignition Coil harness connector.

    Disconnect the PCM harness connector.

    CAUTION: Do not probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal to pin connection. Install Miller Special Tool #8815 to perform diagnosis.

    Measure the resistance of the (K19) Coil Control No. 1 circuit between the Ignition Coil harness connector and the special tool #8815 terminal.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To  7).

    No 

    1. Repair the (K19) Coil Control No. 1 circuit for an open.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 
  7. 7)  (K19) COIL CONTROL NO. 1 SHORTED TO GROUND 
    Fig 4: MEASURING RESISTANCE BETWEEN GROUND AND COIL CONTROL NO. 1 CIRCUIT
    GC0041777Courtesy of DAIMLERCHRYSLER CORP.

    Measure the resistance between ground and the (K19) Coil Control No. 1 circuit in the Ignition Coil harness connector.

    Is the resistance below 100k ohms? 

    Yes 

    1. Repair the (K19) Coil Control No. 1 circuit for a short to ground.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 

    No 

    1. Go To  8).
  8. 8)  PCM 

    Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

    If there are no possible causes remaining, view repair. 

    Repair 

    1. Replace and program the Powertrain Control Module per Service Information. Refer to MODULE-POWERTRAIN CONTROL and STANDARD PROCEDURE - PCM/ECM/SKREEM PROGRAMMING .
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 
  9. 9)  SPARK PLUG 

    Turn the ignition off.

    Remove the Spark Plug.

    Inspect the Spark Plug for the following conditions.

    - Cracks

    - Carbon Tracking

    - Foreign Material

    - Gap size out of specifications

    - Loose or broke electrode

    NOTE: Lightly tap the bottom of the spark plug on a solid surface. The electrode in the spark plug should not move.

    Were any of the above condition present? 

    Yes 

    1. Replace the Spark Plug.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 

    No 

    1. Refer to the INTERMITTENT CONDITION diagnostic procedure.
    2. Perform the POWERTRAIN VERIFICATION TEST. (Refer to POWERTRAIN VERIFICATION TEST) 
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