For 1990-2009 cars only
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 Descriptor
DTC P268A: Fuel Injector Calibration Data Not ProgrammedCircuit/System Description
The control functions for the fuel injection system are integrated in the engine control module (ECM). During the manufacturing process, each injector's flow rate is measured and recorded as injection quantity adjustment (IQA) flow rate data. This data, together with the injector's cylinder position, is stored in the ECM. When the ignition is turned ON, the ECM monitors the fuel injection flow rate numbers to ensure they are present.
Conditions for Running the DTC
The ignition is ON.
Conditions for Setting the DTC
The fuel injector IQA flow rate data is not programmed.
Action Taken When the DTC Sets
DTC P268A is a Type B DTC.
Conditions for Clearing the DTC
DTC P268A is a Type B DTC.
Circuit/System Verification
- Ignition On, observe the scan tool Flow Rates parameter. The ECM should be programmed with the flow rate numbers for the corresponding cylinders.
- Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
| ⇒ | If flow rate numbers are not present, program the injector flow rate with a scan tool. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for ECM replacement, setup, and programming.
