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DTC P2564 or P2565

DTC P2564 or P2565

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 Descriptors

DTC P2564 00

Turbocharger Vane Position Sensor Circuit Low Voltage

DTC P2565 00

Turbocharger Vane Position Sensor Circuit High Voltage

Diagnostic Fault Information

Circuit Short to Ground Open/High Resistance Short to Voltage Signal Performance
5V Reference

P0641

P2564 00

P0641

-

Signal

P2564 00

P2564 00

P2565 00

-

Low Reference

-

P2565 00

-

-



Circuit/System Description

The turbocharger vane position sensor is mounted on the turbo charger vacuum actuator. A 5 V reference voltage and a low reference is supplied to the turbocharger vane position sensor. The sensor provides a signal to the engine control module (ECM) with the actual turbocharger control rod position.

Conditions for Running the DTC

The ignition is ON or engine is running.

Conditions for Setting the DTC

The ECM detects a short to ground or a short to Voltage for more than 1 second.

Action Taken When the DTC Sets

DTCs P2564 and P2565 are Type A DTCs

Conditions for Clearing the DTC

DTCs P2564 and P2565 are Type A DTCs

Reference Information

Schematic Reference

Engine Controls Schematics

Connector End View Reference

Component Connector End Views

Description and Operation

Turbocharger System Description

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References

Circuit/System Verification

Ignition ON, observe the scan tool Turbocharger Vane Position Sensor. The reading should be between 0.5-4.5 V and change with.

Circuit/System Testing


1. Ignition OFF, disconnect the harness connector at the B112 Turbocharger Vane Position Sensor.

2. Ignition OFF, test for less than 5 Ω between the low reference circuit terminal 1 and ground.

3. If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

4. Ignition ON, test for 4.8-5.2 V between the 5 V reference circuit terminal 3 and ground.

5. If less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

6. If greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

7. Verify the scan tool Turbocharger Vane Position Sensor is less than 0.3 V.

8. If greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module.

9. Install a 3 A fused jumper wire between the signal circuit terminal 2 and the 5 V reference circuit terminal 3. Verify the scan tool Turbocharger Vane Position Sensor is greater than 4.8 V.

10. If greater than the specified range, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module.

11. If all circuits test normal, test or replace the B112 Turbocharger Vane Position Sensor.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.