P02D7

DTC P02CD, P02CF, P02D1, P02D3, P02D5, P02D7, P02D9, or P02DB

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis Strategy Based Diagnosis for an overview of the diagnostic approach.

* Diagnostic Procedure Instructions Diagnostic Procedure Instructions provides an overview of each diagnostic category.

DTC Descriptors

DTC P02CD
- Cylinder 1 Injector Exceeded Learning Limit

DTC P02CF
- Cylinder 2 Injector Exceeded Learning Limit

DTC P02D1
- Cylinder 3 Injector Exceeded Learning Limit

DTC P02D3
- Cylinder 4 Injector Exceeded Learning Limit

DTC P02D5
- Cylinder 5 Injector Exceeded Learning Limit

DTC P02D7
- Cylinder 6 Injector Exceeded Learning Limit

DTC P02D9
- Cylinder 7 Injector Exceeded Learning Limit

DTC P02DB
- Cylinder 8 Injector Exceeded Learning Limit

Circuit/System Description

The Engine Control Module (ECM) monitors the correction values for the energizing time of each cylinder.

A correction value for the energizing time is learned for each cylinder at three different rail pressure operating points. The energizing time of the pilot injection is adapted at three calibrated rail pressure points. When the corrected energizing time exceeds the feedback control limit, the corresponding "Injector Exceeded Learning Limit" fault will be set.

Conditions for Running the DTC

* Engine running.

* The DTC runs continuously when the above conditions exist.

Conditions for Setting the DTC

A fault is detected when the stored corrected energizing time exceeds the allowed limit for greater than.05 seconds.

Action Taken When the DTC Sets

DTCs P02CD, P02CF, P02D1, P02D3, P02D5, P02D7, P02D9, OR P02DB are Type B DTCs.

Conditions for Clearing the DTC

DTCs P02CD, P02CF, P02D1, P02D3, P02D5, P02D7, P02D9, OR P02DB are Type B DTCs.

Diagnostic Aids

* This Diagnostic parameter is stored in the ECM over a period of time. Time to set this DTC may take several drive cycles.

* Contaminated or improper fuel quality may cause this DTC to set.

* Worn base engine components or differences in cylinder compression may cause this DTC to set.

* If the DTC is cleared without resetting the injection timing corrections a pending DTC will be set without illuminating the MIL until the next key cycle.

Reference Information

Schematic Reference

Engine Controls Schematics [1][2]Electrical Diagrams

Connector End View Reference

Component Connector End Views 1-2 Shift Solenoid (SS) Valve (M30)

Description and Operation

Fuel System Description Fuel System Description

Electrical Information Reference

* Circuit Testing Circuit Testing

* Connector Repairs Connector Repairs

* Testing for Intermittent Conditions and Poor Connections Testing for Intermittent Conditions and Poor Connections

* Wiring Repairs Wiring Repairs

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References Control Module References for scan tool information.

Circuit/System Verification

1. Verify the proper fuel is used. Refer to Fuel System Specifications [1][2]Fuel Delivery and Air Induction and Contaminants-in-Fuel Diagnosis Contaminants-in-Fuel Diagnosis.

2. Verify there are no aftermarket performance enhancing devices installed on the vehicle.

3. Perform the Fuel Injector Correction Reset for the appropriate fuel injector. Refer to Fuel Injector Correction Reset Fuel Injector Correction Reset.

4. Perform the Crankshaft Position Reluctor Wheel Learn. Refer to Crankshaft Position Reluctor Wheel Learn Testing and Inspection.

5. Perform the Fuel Injector Timing Learn to verify that the DTC does not reset. Refer to Fuel Injector Timing Learn Fuel Injector Timing Learn.

• If DTC resets
Refer to Circuit/System Testing.

• If DTC does not reset

6. All OK.

Circuit/System Testing

1. Perform a engine compression test. Refer to Engine Compression Test Testing and Inspection.

• If engine compression is not within specification
Repair as necessary.

• If engine compression is within specification

2. Replace the appropriate Q17 fuel injector.

Repair Instructions

Perform the Diagnostic Repair Verification Verification Tests after completing the repair.

* Fuel Injector Replacement (Right Side) Service and RepairFuel Injector Replacement (Left Side) Service and Repair

* Perform the Fuel Injector Flow Rate Programming Fuel Injector Flow Rate Programming and Fuel Injector Correction Reset Fuel Injector Correction Reset procedures after replacement of a fuel injector.

* Control Module References Control Module References for ECM replacement, programming, and setup.