P2563

P2563-TURBOCHARGER BOOST CONTROL POSITION SENSOR PERFORMANCE







For a complete wiring diagram, refer to Diagrams/Electrical.

Theory of Operation

The Variable Geometry Turbocharger (VGT) is electronically activated by the Turbo Actuator. The Turbo Actuator is a smart device that receives information via the CAN BUS from the Engine Control Module (ECM). The Turbo Actuator performs its own diagnostics and reports failures back to the ECM using the CAN BUS. The ECM then decodes the error message and converts it to a fault code. This monitor is a two trip fault. The MIL lamp will turn off once the diagnostic runs and passes in four consecutive drive cycles.

- When Monitored:
Key on, at initial start up. One time per key cycle.

- Set Condition:
Actual position not found.

Possible Causes:

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure

1. VEHICLE CONFIGURATION

1. The repair procedure is different depending on whether the vehicle is a Pick Up or Chassis Cab.

Is the vehicle a Pick Up or Chassis Cab?

Pick Up

- Go To 2

Chassis Cab

- Go To 4

2. DTC PRESENT

NOTE: If any other DTCs are present with P2563, address P2563 before attempting to repair other fault codes. If however, DTC P0471 is present along with P2563, both DTCs should be addressed and repaired.

1. Turn the ignition on.
2. With the scan tool, read DTCs.

Is DTC P2563 present?

Yes

- Go To 3

No

- Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Intermittent Condition Test

3. TURBOCHARGER CLEANING

1. Use the scan to to perform the Turbocharger cleaning procedure.
2. Perform three engine start ups, and allow the engine to idle for 30 seconds on each run cycle. Allow 75 seconds between each engine start.
3. With the scan tool, read DTCs.

Did DTC P2563 log a one trip fault?

Yes

- Replace the Turbocharger due to foreign object damage in accordance with the service information.
- Perform the POWERTRAIN VERIFICATION TEST Powertrain Verification Test

No

- Repair complete.
- Perform the POWERTRAIN VERIFICATION TEST Powertrain Verification Test

4. OTHER DTCS PRESENT

1. Turn the ignition on.
2. With the scan tool, read DTCs.

Are any other Turbocharger related DTCs present?

Yes

- Repair the other Turbocharger related DTCs before proceeding.

No

- Perform the POWERTRAIN VERIFICATION TEST Powertrain Verification Test