P006F
DTC P0045, P0047, P0048, P006E, or P006F
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) provide an overview of each diagnostic category.
DTC Descriptors
DTC P0045
- Turbocharger Boost Control Solenoid Control Circuit
DTC P0047
- Turbocharger Boost Control Solenoid Control Circuit Low Voltage
DTC P0048
- Turbocharger Boost Control Solenoid Control Circuit High Voltage
DTC P006E
- Turbocharger Boost Control Solenoid High Control Circuit Low Voltage
DTC P006F
- Turbocharger Boost Control Solenoid High Control Circuit High Voltage
Diagnostic Fault Information
Circuit/System Description
The positions of the turbocharger vanes are controlled by the engine control module (ECM). The ECM utilizes a turbocharger vane control solenoid to control the turbocharger vanes and a turbocharger vane position sensor to verify the vanes position. The ECM will vary the boost dependent upon the load requirements of the engine. The vane control solenoid has a high control circuit and a low control circuit. The ECM uses a pulse width modulation on the low control circuit to control the solenoid.
Conditions for Running the DTC
P0045, P0047, P0048 and P006E
* The battery voltage is greater than 11 V.
* The engine is running.
* DTCs P0045, P0047, P0048 and P006E run continuously when the above conditions are met.
P006F
* The battery voltage is greater than 11 V.
* The ignition is OFF.
* The engine is in afterun.
* DTC P006F runs continuously when the above conditions are met.
Conditions for Setting the DTC
* The ECM detects that the commanded state of the driver and the actual state of the control circuits do NOT match.
* The above condition exists for greater than 3 s.
Action Taken When the DTC Sets
DTCs P0045, P0047, P0048, P006E and P006F are Type B DTCs.
Conditions for Clearing the DTC
DTCs P0045, P0047, P0048, P006E and P006F are Type B DTCs.
Reference Information
Schematic Reference
Engine Controls Schematics ([1][2]Electrical Diagrams)
Connector End View Reference
Component Connector End Views (Connector End Views By Name)
Description and Operation
* Turbocharger System Description (Description and Operation)
* Turbocharger Learn (Testing and Inspection)
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 (Programming and Relearning) for scan tool information
Special Tools
J 34730-405 Injector Test Lamp
Circuit/System Verification
1. Verify that DTCs P0641, P0651, P0697, P06A3, P06D2, P2564, P2565, P2598 or P2599 are not set.
• If a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (Diagnostic Trouble Code (DTC) List - Vehicle).
2. Engine running, increase the engine speed to 1,500 RPM and maintain. Command the TC Vane Pos. Ctrl. Solenoid ON and OFF with a scan tool while observing the scan tool Vane Position Sensor parameter. The parameter should increase to 95-97 % and decrease to near 0 % when changing between the commanded states.
3. Engine running, observe the scan tool TC Vane Position Sensor and the Desired TC Vane Position parameters. Slowly increase the engine speed from idle to 2,500 RPM, and slowly return the engine to idle speed. The parameters should remain within 2 % throughout the engine speed range.
4. Engine running, observe the scan tool TC Vane Position Sensor and the Desired TC Vane Position parameters. Increase the TC vane position in 5 % increments from 0-100 % with a scan tool. The parameters should remain within 2 % throughout the entire commanded range.
5. Operate the vehicle within the Conditions for Running the DTC to verify that the DTC does not reset. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.
Circuit/System Testing
1. Ignition OFF, disconnect the harness connector at the Q41 turbocharger vane position control solenoid.
2. Ignition ON, verify that a test lamp illuminates between the high signal circuit terminal A and ground.
• If the test lamp does not illuminate, test the high signal circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 ECM.
Note: When the ECM is attempting a TC Learn, the test lamp will flash ON and OFF without commands from a scan tool.
3. Connect the J 34730-405 between the high signal circuit terminal A and the low signal circuit terminal B.
4. Engine running, command the TC Vane Pos. Ctrl. Solenoid ON and OFF with a scan tool. The test lamp should illuminate and change from bright to dim when changing between the commanded states.
• If the J 34730-405 does not illuminate, test the low signal circuit terminal B for an open/high resistance or a short to voltage. If the circuits test normal, replace the K20 ECM.
• If the J 34730-405 remains illuminated and does not vary in intensity when changing between the commanded states, test the low signal circuit terminal B for a short to ground. If the circuit tests normal, replace the K20 ECM.
5. Ignition OFF, test for a resistance between 2-7 ohm across the terminals of the Q41 turbocharger vane position control solenoid.
• If the resistance is not within the specified range, replace the Q41 turbocharger vane position control solenoid.
6. Test for infinite resistance between each terminal and the Q41 turbocharger vane position control solenoid housing.
• If less than infinite resistance, replace the Q41 turbocharger vane position control solenoid.
7. If all circuits test normal, test or replace the Q41 turbocharger vane position control solenoid.
Component Testing
Turbocharger Vane Position Control Solenoid Valve
1. Ignition OFF, disconnect the harness connector at the Q41 Turbocharger Vane Position Control Solenoid Valve.
2. Measure the resistance across the Q41 Turbocharger Vane Position Control Solenoid Valve terminals. The resistance should be between 3-7 ohm.
• If greater than the specified range, replace the Q41 Turbocharger Vane Position Control Solenoid Valve.
3. Test for infinite resistance between each Q41 Turbocharger Vane Position Control Solenoid Valve terminal and the solenoid valve housing.
• If less than the specified range, replace the Q41 Turbocharger Vane Position Control Solenoid Valve.
4. Ignition OFF, remove the Turbocharger Vane Position Control Solenoid Valve.
5. Connect the Q41 Turbocharger Vane Position Control Solenoid Valve harness connector.
6. Ignition ON, command the TC Vane Pos. Ctrl. Solenoid ON. Depress and hold the CAM follower slightly at the tip of the TC solenoid valve while observing the slot closest to the CAM follower for the spool valve to move to the open position.
• If the spool valve did not move to the open position, replace the Q41 Turbocharger Vane Position Control Solenoid Valve.
Repair Instructions
Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.
* Turbocharger Control Solenoid Valve Replacement (Turbocharger Control Solenoid Valve Replacement)
* If any service has been performed on the turbocharger or on the turbocharger components, a turbocharger relearn must be performed. Refer to Turbocharger Learn (Testing and Inspection)
* Control Module References (Programming and Relearning) for ECM replacement, setup and programming