DTC P003A
Diagnostic Instructions
DTC Descriptor
DTC P003A 00: Turbocharger Vane Position Not
Learned |
Circuit/System Description
The engine control module (ECM) performs the turbocharger learn
procedure automatically when the enabling criteria have been met.
After each ignition cycle, and before the enable criteria have been
met, the ECM will use the previously learned value. If the ECM does
not have a previously learned value, it will default to a stored
calibrated value.
The ECM commands the turbocharger vane control solenoid to
position the turbocharger vanes, and a turbocharger vane position
sensor monitors the actual position of the vanes. The ECM varies
the boost dependant upon the load requirements of the engine.
Conditions for Running the DTC
• |
The battery voltage is equal
to or greater than 11 V. |
• |
The ECM is commanding the
turbocharger vanes open or closed during a position learn
process. |
• |
The engine speed is between
750–850 RPM. |
• |
The engine coolant temperature
(ECT) is between 73–96°C (163–205°F).
|
• |
DTC P003A runs once per key
cycle when the above conditions are met. |
Conditions for Setting the DTC
• |
The engine control module
(ECM) determines that the difference between the turbocharger
desired vane position sensor and the actual turbocharger vane
position exceed a calibrated threshold during a valid learn
event. |
• |
The above condition is
met. |
Action Taken When the DTC Sets
DTC P003A is a Type C DTC.
Conditions for Clearing the DTC
DTC P003A is a Type C DTC.
Diagnostic Aids
If any service has been performed on the turbocharger or on the
turbocharger components, a turbocharger relearn must be performed.
Failure to perform the turbocharger learn procedure may cause other
DTCs to set.
The turbocharger learn procedure is required when the following
service procedures have been performed:
• |
Turbocharger vane position
control solenoid valve replacement |
• |
Turbocharger vane position
sensor replacement |
• |
Turbocharger
replacement |
• |
Any service that disturbs the
turbocharger components |
Reference Information
Schematic Reference
Engine Controls Schematics
Connector End View Reference
Component Connector End Views
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
Note: Once the enable
conditions have been met the throttle must remain at idle. Do not
change the accelerator pedal position (APP) during this
procedure.
1. |
The following conditions must
be met for the ECM to perform the turbocharger learn
procedure: |
|
• |
The vehicle is in Park or
Neutral. |
|
• |
Start and idle the
engine. |
|
• |
The ECT is greater than
40°C (104°F). |
3. |
Verify the DTC does not
reset. |
⇒ |
If the DTC resets, replace the K20 Engine Control
Module. |
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the diagnostic
procedure.
Control Module References for engine control module
replacement, programming and setup.
|