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
DTC P2564 00: Turbocharger Boost Control Position Sensor Circuit Low VoltageDTC P2565 00: Turbocharger Boost Control Position Sensor Circuit High Voltage
Diagnostic Fault Information
Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
5-Volt 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 s.
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
Connector End View Reference
Description and Operation
Turbocharger System Description
Electrical Information Reference
DTC Type Reference
Powertrain Diagnostic Trouble Code (DTC) Type Definitions
Scan Tool Reference
Control Module References for scan tool information
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
- Ignition OFF, disconnect the harness connector at the B112 Turbocharger Vane Position Sensor.
- Ignition OFF, test for less than 5 Ω between the low reference circuit terminal 2 and ground.
- Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal 1 and ground.
- Verify the scan tool Turbocharger Vane Position Sensor is greater than 4.8 V.
- Install a 3 A fused jumper wire between the signal circuit terminal 3 and the low reference circuit terminal 2. Verify the scan tool Turbocharger Vane Position Sensor is less than 0.3 V.
- If all circuits test normal, test or replace the B112 Turbocharger Vane Position Sensor.
| ⇒ | 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 (ECM). |
| ⇒ | If less than the specified range, test the 5-volt reference circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the K20 Engine Control Module (ECM). |
| ⇒ | If greater than the specified range, test the 5-volt reference circuit for a short to voltage. If the circuit tests normal, replace the K20 Engine Control Module (ECM). |
| ⇒ | If less than the specified range, test the signal circuit terminal 3 for a short to ground. If the circuit tests normal, replace the K20 Engine Control Module (ECM). |
| ⇒ | 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 (ECM). |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
LINK X for sensor replacement
