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Home >> Chrysler >> 2011 >> 300 Base, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 1926 (6.7L Diesel - DTCS P0008-00 To P02E3-00 - 2500HD & 3500HD) >> DTC Troubleshooting >> P0202-00-Fuel Injector 2 Circuit/Open >> Diagnostic Test

Diagnostic Test

WARNING: This page is about a different car, the 2019 RAM 3500 HD and 2019 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
  1. READ AND RECORD DTCS - CHECK FOR THE DTC 
    1. Turn the ignition on.
    2. With the scan tool, read DTCs in all Electronic Control Units (ECUs) and record on the repair order.
    3. For future reference, with the scan tool, run and save a vehicle Scan Report and all related recorded data.
    4. Using the When Monitored and Set Conditions above and recorded data, operate the vehicle in the conditions that set the DTC.
    5. With the scan tool, read DTCs.

      Is the DTC Active or Pending?

      Yes 

      • Go To  2

      No 

  2. CHECK EACH FUEL INJECTOR CIRCUIT FOR AN OPEN/HIGH RESISTANCE 
    1. Turn the ignition off.
    2. Disconnect the PCM C1 harness connector.
    3. Measure the resistance between the:
      • Fuel Injector 1 High Side (K11) Driver circuit and the Fuel Injector 1 Low Side (K611) Driver circuit at the PCM C1 harness connector.
      • Fuel Injector 2 High Side (K12) Driver circuit and the Fuel Injector 2 Low Side (K612) Driver circuit at the PCM C1 harness connector.
      • Fuel Injector 3 High Side (K13) Driver circuit and the Fuel Injector 3 Low Side (K613) Driver circuit at the PCM C1 harness connector.
      NOTE:

      Be sure to zero out the Ohm meter prior to checking the Fuel Injector circuit. Resistance reading should be between 0 and 1.0 Ohm.

      Is the resistance between 0 and 1.0 Ohm for each Fuel Injector circuit?

      Yes 

      • Go To  3

      No 

      • Go To  8
  3. CHECK EACH FUEL INJECTOR CIRCUIT FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the:
      • Fuel Injector 1 High Side (K11) Driver circuit at the PCM C1 harness connector.
      • Fuel Injector 2 High Side (K12) Driver circuit at the PCM C1 harness connector.
      • Fuel Injector 3 High Side (K13) Driver circuit at the PCM C1 harness connector.
      NOTE:

      There should be no continuity between ground and the circuit being tested.

      Is there continuity between ground and the circuits being tested?

      Yes 

      • Go To  4

      No 

      • Go To  12
  4. CHECKING FOR INJECTOR CONTROL CIRCUITS SHORTED TOGETHER 
    1. Disconnect the valve cover pass through wires at each Bank 1 Fuel Injector terminal.
      NOTE:

      Do not disconnect the valve cover pass through harness from the engine harness.

    2. At the PCM C1 harness connector, measure the resistance between ALL (Bank 1) Low AND High Side Control circuits: K11 (High 1), K611 (Low 1), K12 (High 2), K612 (Low 2), K13 (High 3), and K613 (Low 3).
      NOTE:

      There should be no continuity between any of the circuits being tested.

      Is there continuity between any Injector Control circuits?

      Yes 

      • Repair the Injector Control circuits that are shorted together.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  5
  5. ISOLATE CYLINDER 1 FUEL INJECTOR 
    1. Reconnect the PCM C1 harness connector to the PCM.
    2. Leave the valve cover pass through wires disconnected at the Cylinder 1 Fuel Injector terminals.
    3. Reconnect the valve cover pass through wires at the Cylinder 2 and 3 Fuel Injector terminals.
      NOTE:

      Torque the Injector terminal nuts to 1.5 Nm (13.0 in-lbs).

    4. Place electrical tape on the ends of the disconnected valve cover pass through wires to prevent the Injector terminal nuts from coming in contact with each other or the engine block.
    5. Place the valve cover on the engine.
      NOTE:

      It is not necessary to bolt the valve cover in place.

    6. Ignition on, engine not running.
    7. With the scan tool, erase all DTCs.
    8. Start the engine and let idle for 1 minute.
    9. Ignition on, engine not running.
    10. With the scan tool, read DTCs.

      Are multiple bank 1 injector circuit DTCs (P0201, P0202, P0203) active?

      Yes 

      • Go To  6

      No 

      • Replace the Cylinder 1 Fuel Injector in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  6. ISOLATE CYLINDER 2 FUEL INJECTOR 
    1. Reconnect the valve cover pass through wires at the Cylinder 1 Fuel Injector terminals.
      NOTE:

      Torque the Injector terminal nuts to 1.5 Nm (13.0 in-lbs).

    2. Disconnect the valve cover pass through wires at the Cylinder 2 Fuel Injector terminals.
    3. Place electrical tape on the ends of the disconnected valve cover pass through wires to prevent the injector terminal nuts from coming in contact with each other or the engine block.
    4. Place the valve cover on the engine.
      NOTE:

      It is not necessary to bolt the valve cover in place.

    5. Ignition on, engine not running.
    6. With the scan tool, erase all DTCs.
    7. Start the engine and let idle for 1 minute.
    8. Ignition on, engine not running.
    9. With the scan tool, read DTCs.

      Are multiple bank 1 injector circuit DTCs (P0201, P0202, P0203) active?

      Yes 

      • Go To  7

      No 

      • Replace the Cylinder 2 Fuel Injector in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  7. ISOLATE CYLINDER 3 FUEL INJECTOR 
    1. Reconnect the valve cover pass through wires at the cylinder 2 fuel injector terminals.
      NOTE:

      Torque the injector terminal nuts to 1.5 Nm (13.0 in-lbs).

    2. Disconnect the valve cover pass through wires at the cylinder 3 fuel injector terminals.
    3. Place electrical tape on the ends of the disconnected valve cover pass through wires to prevent the injector terminal nuts from coming in contact with each other or the engine block.
    4. Place the valve cover on the engine.
      NOTE:

      It is not necessary to bolt the valve cover in place.

    5. Ignition on, engine not running.
    6. With the scan tool, erase all DTCs.
    7. Start the engine and let idle for 1 minute.
    8. Ignition on, engine not running.
    9. With the scan tool, read DTCs.

      Are multiple bank 1 injector circuit DTCs (P0201, P0202, P0203) active?

      Yes 

      • Replace the Powertrain Control Module in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Replace the Cylinder 3 Fuel Injector in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  8. CHECK THE VALVE COVER PASS THROUGH HARNESS CIRCUIT 
    NOTE:

    Perform the following tests on the Fuel Injector circuit which was faulty.

    1. Disconnect the Valve Cover Pass Through harness connector.
    2. Measure the resistance between the Low Side Driver circuit and the High Side Driver circuit at the Valve Cover Pass Through connector terminals.
      NOTE:

      Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.

      Is the resistance between 0 and 1.0 Ohm?

      Yes 

      • Go To  9

      No 

      • Go To  11
  9. CHECK THE HIGH SIDE CIRCUIT IN ENGINE HARNESS 
    1. Measure the resistance of the High Side Driver circuit between the Valve Cover Pass Through harness connector and the PCM C1 harness connector.
      NOTE:

      Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.

      Is the resistance between 0 and 1.0 Ohm?

      Yes 

      • Go To  10

      No 

      • Repair the High Side Driver circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  10. CHECK THE LOW SIDE CIRCUIT IN ENGINE HARNESS 
    1. Measure the resistance of the Low Side Driver circuit between the Valve Cover Pass Through harness connector and the PCM C1 harness connector.
      NOTE:

      Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.

      Is the resistance between 0 and 1.0 Ohm?

      Yes 

      No 

      • Repair the Low Side Driver circuit for an open or high resistance.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  11. CHECK THE FUEL INJECTORS 
    1. Disconnect all bank 1 Fuel Injector wires at the Fuel Injectors.
    2. Measure the resistance across the terminals at the Fuel Injector.
      NOTE:

      Be sure to zero the Ohm meter prior to checking the Fuel Injector circuit.

      Is the resistance between 0 and 1.0 Ohm?

      Yes 

      No 

      • Replace the Fuel Injector in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  12. CHECK FOR THE DRIVER CIRCUITS SHORTED TOGETHER 
    1. Disconnect all bank 1 Fuel Injector wires at the Fuel Injectors.
    2. Measure the resistance between all bank 1 Driver circuits at the PCM C1 harness connector.
      NOTE:

      There should be no continuity the circuits being tested.

      Is there continuity between the circuits being tested?

      Yes 

      • Go To  13

      No 

      • Go To  14
  13. CHECK THE VALVE COVER PASS THROUGH HARNESS CIRCUIT 
    1. Disconnect the Valve Cover Pass Through harness connector.
    2. Measure the resistance between all bank 1 Driver circuits of the Valve Cover Pass Through connector terminals.
      NOTE:

      There should be no continuity the circuits being tested.

      Is there continuity between the circuits being tested?

      Yes 

      • Replace the Valve Cover Pass Through harness in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Repair the short between the bank 1 Driver circuits in the engine harness.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
  14. CHECK THE HIGH SIDE DRIVER CIRCUIT FOR A SHORT TO GROUND 
    NOTE:

    Perform the following tests on the Fuel Injector circuit which was faulty.

    1. Disconnect the Valve Cover Pass Through harness connector.
    2. Measure the resistance between ground and the High Side Driver circuit at the PCM C1 harness connector.
      NOTE:

      There should be no continuity between ground and the circuit being tested.

      Is there continuity between ground and the circuit being tested?

      Yes 

      • Repair the High Side Driver circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  15
  15. CHECK THE LOW SIDE DRIVER CIRCUIT FOR A SHORT TO GROUND 
    1. Measure the resistance between ground and the Low Side Driver circuit at the PCM C1 harness connector.
      NOTE:

      There should be no continuity between ground and the circuit being tested.

      Is there continuity between ground and the circuit being tested?

      Yes 

      • Repair the Low Side Driver circuit for a short to ground.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Go To  16
  16. CHECK THE FUEL INJECTORS 
    1. Measure the resistance between ground and one of the Fuel Injector terminals.
      NOTE:

      There should be no continuity between ground and the terminal being tested.

      Is there continuity between ground and the terminal being tested?

      Yes 

      • Replace the Fuel Injector in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .

      No 

      • Replace the Valve Cover Pass Through harness in accordance with the Service Information.
      • Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST .
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