Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category |
DTC Descriptors
DTC P0201: Cylinder 1 - Injector Circuit MalfunctionDTC P0202: Cylinder 2 - Injector Circuit Malfunction
DTC P0203: Cylinder 3 - Injector Circuit Malfunction
DTC P0204: Cylinder 4 - Injector Circuit Malfunction
DTC P0205: Cylinder 5 - Injector Circuit Malfunction
DTC P0206: Cylinder 6 - Injector Circuit Malfunction
DTC P0207: Cylinder 7 - Injector Circuit Malfunction
DTC P0208: Cylinder 8 - Injector Circuit Malfunction
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
Ignition 1 Voltage - INJ Fuse A | P0201 P0203 P0205 P0207 | P0201 P0203 P0205 P0207 | -- | -- |
Ignition 1 Voltage - INJ Fuse B | P0102, P0206, P0208, P0443 | P0102, P0206, P0208, P0443 | -- | -- |
Fuel Injector 1 Control | P0201 | P0201 | P0201 | -- |
Fuel Injector 2 Control | P0202 | P0202 | P0202 | -- |
Fuel Injector 3 Control | P0203 | P0203 | P0203 | -- |
Fuel Injector 4 Control | P0204 | P0204 | P0204 | -- |
Fuel Injector 5 Control | P0205 | P0205 | P0205 | -- |
Fuel Injector 6 Control | P0206 | P0206 | P0206 | -- |
Fuel Injector 7 Control | P0207 | P0207 | P0207 | -- |
Fuel Injector 8 Control | P0208 | P0208 | P0208 | -- |
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
DTCs P0196, P0197 and P0198 are type B DTCs.
Conditions for Clearing the MIL/DTC
DTCs P0196, P0197 and P0198 are type B DTCs.
Reference Information
Schematic Reference
Connector End View Reference
Electrical Information Reference
Scan Tool Reference
Special Tools Required
J 34730-405 Injector Test Lamp
Circuit/System Testing
- Remove the engine dress cover, refer to Engine Cover Replacement .
- Disconnect the affected fuel injector,
- Ignition ON, engine OFF, probe the ignition 1 voltage circuit of the fuel injector with a test lamp that is connected to a known ground. The test lamp should illuminate.
- Connect the injector test lamp into the fuel injector connector. Start the engine.
| ⇒ | If the test lamp does not illuminate, repair the open/high resistance in the ignition 1 voltage circuit. |
| ⇒ | If the test lamp flashes, test for an intermittent or a poor connection at the fuel injector. If the circuit tests normal, replace the ECM. |
| ⇒ | 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 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 after completing the diagnostic procedure.
| • | Control Module References for ECM replacement, setup and programming |
