P0205

DTC P0201, P0202, P0203, P0204, P0205, P0206, P0207, or P0208

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Initial Inspection and Diagnostic Overview) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Initial Inspection and Diagnostic Overview) provides an overview of each diagnostic category.



DTC Descriptors
DTC P0201
- Injector 1 Control Circuit

DTC P0202
- Injector 2 Control Circuit

DTC P0203
- Injector 3 Control Circuit

DTC P0204
- Injector 4 Control Circuit

DTC P0205
- Injector 5 Control Circuit

DTC P0206
- Injector 6 Control Circuit

DTC P0207
- Injector 7 Control Circuit

DTC P0208
- Injector 8 Control Circuit




Diagnostic Fault Information






Circuit/System Description

The engine control module (ECM) enables the appropriate fuel injector pulse for each cylinder. Ignition voltage is supplied to the fuel injectors. The ECM controls each fuel injector by grounding the control circuit via a solid state device called a driver. The ECM monitors the status of each driver. If the ECM detects an incorrect voltage for the commanded state of the driver, a fuel injector control circuit DTC sets.


Conditions for Running the DTC

* The engine is running.
* The ignition voltage is more than 11 volts for 5 seconds.
* DTC P0201-P0208 runs continuously when the above conditions are met.



Conditions for Setting the DTC

* The ECM detects an incorrect voltage on the fuel injector control circuit.
* The above condition is met for 1 second.



Action Taken When the DTC Sets

* The control module illuminates the malfunction indicator lamp (MIL) on the second consecutive ignition cycle that the diagnostic runs and fails.
* The control module records the operating conditions at the time the diagnostic fails. The first time the diagnostic fails, the control module stores this information in the Failure Records. If the diagnostic reports a failure on the second consecutive ignition cycle, the control module records the operating conditions at the time of the failure. The control module writes the operating conditions to the Freeze Frame and updates the Failure Records.



Conditions for Clearing the MIL/DTC

* The control module turns OFF the malfunction indicator lamp (MIL) after 3 consecutive ignition cycles that the diagnostic runs and does not fail.
* A current DTC, Last Test Failed, clears when the diagnostic runs and passes.
* A history DTC clears after 40 consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic.
* Clear the MIL and the DTC with a scan tool.



Diagnostic Aids

Performing the Fuel Injector Diagnosis may help isolate an intermittent condition. Refer to Fuel Injector Diagnosis (w/CH47976) (Fuel Injector Diagnosis (With CH 47976))Fuel Injector Diagnosis (w/J39021 or w/Tech 2) (Fuel Injector Diagnosis (w/J39021 or w/Tech 2)) .


Reference Information
Schematic Reference

Engine Controls Schematics (Electrical Diagrams)
Connector End View Reference

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information
Special Tools

J 34730-405 Injector Test Lamp


Circuit/System Testing

1. Remove the engine sight shield and supercharger inlet duct assembly. Refer to Supercharger Inlet Duct Assembly Replacement (Supercharger Inlet Duct Assembly Replacement) .
2. Disconnect the affected fuel injector.
3. With the ignition ON, engine OFF, probe the ignition 1 voltage circuit of the fuel injector with a test lamp that is connected to a good ground. The test lamp should illuminate.

• If the test lamp does not illuminate, repair the open or the high resistance in the ignition 1 voltage circuit.

4. Connect the Injector Test Lamp into the fuel injector connector. Start the engine.

• If the test lamp flashes, test for an intermittent or a poor connection at the fuel injector, or a faulty fuel injector.
• If the test lamp does not flash, test for an open, high resistance, or a short to voltage in the control circuit of the fuel injector or an intermittent or poor connection at the ECM. If the circuit tests normal, replace the ECM.
• If the test lamp remains illuminated at all times, test for a short to ground in the control circuit of the fuel injector. If the circuit tests normal, replace the ECM.




Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.

* Fuel Injector and Fuel Rail Replacement (Service and Repair)
* Control Module References (Programming and Relearning) for ECM replacement, setup, and programming