| DTC P003A (LBY) |
| 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 |
| Circuit/System Description |
| Conditions for Running the DTC |
| • |
The battery voltage is equal to or greater than 11 V. | |
| • |
The engine speed is between 750-850 RPM. | |
| • |
The engine coolant temperature (ECT) is between 73-96°C (163-205°F). | |
| • |
DTC P003A runs once per key cycle when the above conditions are met. | |
| Conditions for Setting the DTC |
| • |
The engine control module (ECM) determines that the difference between the desired boost pressure actuator and the actual boost pressure actuator exceed a calibrated threshold. | |
| • |
The above condition is met. | |
| Action Taken When the DTC Sets |
| Conditions for Clearing the DTC |
| Reference Information |
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Circuit Testing
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Connector Repairs
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Testing for Intermittent Conditions and Poor Connections
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Wiring Repairs
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| Circuit/System Verification |
| 1. |
A mechanical fault can cause the DTC | |
| 2. |
Check the following components for proper working | |
| • |
Boost Pressure Actuator LPT |
| • |
Boost Pressure Actuator HPT |
| • |
Turbocharger |
| • |
Vacuum System |
| 3. |
Verify the DTC does not reset. | |
| 4. |
If the DTC resets, replace the K20 Engine Control Module. | |
| Repair Instructions |