LEMON Manuals: Even more car manuals for everyone
Home >> Chrysler >> 2009 >> 300 Signature Series >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Engine Controls - DTCS P2161 To P3401) >> Diagnosis And Testing >> P2305-Ignition Coil 2 Secondary Circuit- Insufficient Ionization >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2006 Dodge Magnum, 2006 Dodge Charger, and 2006 Chrysler 300. However, it is still accessible from the selected car via links, so may be relevant.
  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. Perform POWERTRAIN VERIFICATION TEST .
  2. 2)  SECONDARY SPARK 
    NOTE: Inspect the ignition coil for damage, carbon tracking on the coil or a damaged spark plug insulator boot. If a problem is found, replace the ignition coil.

    Turn the ignition off.

    Remove the ignition coil.

    NOTE: 6.1L coils must have a spark tester installed on both sides of the coil during the following test. During the test, each side of the coil should output a crisp blue spark that is able to jump the gap of the spark tester.

    Install a spark tester(s) to the ignition coil.

    NOTE: On the 2.7 and 3.5L engines, cylinders 1, 3 and 5, it is necessary to remove the upper intake to access the ignition coils. Once the ignition coil has been removed from the cylinder head, the intake must be reinstalled to be able to crank the engine. Move the ignition coil harness connector through the slots in the upper intake and then connect the coil to the harness connector. Secure the upper intake to the lower intake in accordance with the service information.

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

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

    Is good spark generated? 

    Yes 

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

    No 

    1. Go To  3).
  3. 3)  (K343) ASD RELAY OUTPUT2 CIRCUIT 
    Fig 1: Checking ASD Relay Output 2 Circuit
    GC0039807Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the Ignition Coil harness connector.

    Ignition on, engine not running.

    With a scan tool, actuate the ASD Relay.

    Using a 12-volt test light connected to ground, probe the (K343) ASD Relay Output 2 circuit in the Coil on Plug harness connector.

    Does the test light illuminate brightly? 

    Yes 

    1. Go To  4).

    No 

    1. Repair the open or short to ground in the (K343) ASD Relay Output 2 circuit between the IPM and Coil harness connector.
    2. Perform POWERTRAIN VERIFICATION TEST .
  4. 4)  IGNITION COIL RESISTANCE 

    Turn the ignition off.

    NOTE: The following resistance measurement should be taken at 70°-80° F.

    Measure the resistance of the Ignition Coil.

    Is the resistance between 0.53 to 0.65 ohms at 77°F (25°C) for the Ignition Coil being tested? 

    Yes 

    1. Go To  5).

    No 

    1. Replace the Ignition Coil.
    2. Perform POWERTRAIN VERIFICATION TEST .
  5. 5)  IGNITION COIL 
    Fig 2: Checking Coil Control Circuit
    GC0039808Courtesy of DAIMLERCHRYSLER CORP.

    Using a 12-volt test light connected to a 12-volt source, probe the (K17) Coil Control No.2 circuit.

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

    What is the condition of the test light while cranking the engine? 

    Brightly blinking. 

    1. Replace the Ignition Coil.
    2. Perform POWERTRAIN VERIFICATION TEST .

    ON constantly. 

    1. Go To  6).

    OFF constantly. 

    1. Go To  7).
  6. 6)  (K17) COIL CONTROL NO.2 CIRCUIT SHORTED TO GROUND 
    Fig 3: Checking Coil Control Circuit
    GC0039869Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the C2 PCM harness connector.

    Measure the resistance between ground and the (K17) Coil Control No.2 circuit in the Ignition Coil harness connector.

    Is the resistance below 100 ohms? 

    Yes 

    1. Repair the short to ground in the (K17) Coil Control No.2 circuit.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Go To  8).
  7. 7)  (K17) COIL CONTROL NO.2 CIRCUIT OPEN 
    Fig 4: Checking Coil Control Circuit
    GC0039809Courtesy of DAIMLERCHRYSLER CORP.

    Turn the ignition off.

    Disconnect the C2 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 (K17) Coil Control No.2 circuit from the Ignition Coil harness connector to the appropriate terminal of special tool #8815.

    Is the resistance below 5.0 ohms? 

    Yes 

    1. Go To  8).

    No 

    1. Repair the open in the (K17) Coil Control No.2 circuit.
    2. Perform POWERTRAIN VERIFICATION TEST .
  8. 8)  PCM 
    NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push out. Repair as necessary.

    Using the schematics as a guide, inspect the wire harness and connectors. Pay particular attention to all Power and Ground circuits.

    Were there any problems found? 

    Yes 

    1. Repair as necessary.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Replace and program the Powertrain Control Module per Service Information.
    2. Perform POWERTRAIN VERIFICATION TEST .
  9. 9)  Visual and Physical Inspection 

    Turn the ignition off.

    Remove the Spark Plug.

    NOTE: Vehicles that are equipped with the 5.7L or 6.1L engines must have both spark plugs (per cylinder) removed and inspected to ensure proper operation.

    Inspect the Spark Plug for the following conditions.

    • Cracks
    • Carbon Tracking
    • Foreign Material
    • Gap size out of specifications
    • Loose or broken 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 conditions present? 

    Yes 

    1. Replace the Spark Plug.
    2. Perform POWERTRAIN VERIFICATION TEST .

    No 

    1. Refer to INTERMITTENT CONDITION .
scientia non olet · About LEMON Manuals