♻VOLKSWAGEN TRANSPORTER T5 ECU ENGINE CONTROL MODULE 038906016AJ 04-09♻

#102

Genuine used Volkswagen Transporter T5 1.9 TDI Engine Control Unit / ECU, part number 038906016AJ. This is the main diesel engine management control module responsible for processing sensor information and controlling fuel injection, turbocharger regulation, emissions-related functions and other essential engine-management operations.

VW Part Number: 038906016AJ

VW OE Number: 038 906 016 AJ

Bosch Number: 0 281 012 538 / 0281012538

ECU Type: Bosch EDC16U31

Part Type: Engine Control Module / ECU / ECM

Engine Type: 1.9 TDI PD

Power Application: 75 kW / 102 PS

Position: Engine Management System

Manufacturer: Bosch / Volkswagen

Condition: Genuine used part

Compatibility

Confirmed Bosch applications include selected:

* Volkswagen Transporter T5 1.9 TDI – 75 kW / 102 PS

* Volkswagen Caravelle T5 1.9 TDI – 75 kW / 102 PS

* Volkswagen Multivan T5 1.9 TDI – 75 kW / 102 PS

* Volkswagen California T5 1.9 TDI – 75 kW / 102 PS

* Transporter chassis codes 7H / selected 7J variants

Bosch lists 038906016AJ / 0281012538 for these T5 1.9 TDI applications approximately from 2006 to November 2009.

The ECU is also associated with the Volkswagen T5 1.9 TDI PD engine-management system using the Bosch EDC16U31 platform.

Technical Information

The Engine Control Unit is the primary electronic controller for the diesel engine.

It receives information from numerous sensors throughout the engine and calculates the correct operating parameters in real time.

Functions managed by the ECU can include:

* Fuel injection quantity

* Injection timing

* Engine idle control

* Turbocharger boost regulation

* EGR operation

* Engine torque management

* Accelerator pedal input

* Coolant-temperature monitoring

* Intake-air measurement

* Manifold-pressure monitoring

* Fuel-temperature information

* Glow-plug control strategy

* Emissions management

* Engine protection strategies

* Diagnostic fault monitoring

The ECU communicates with other control modules through the vehicle’s data network.

Bosch EDC16U31 System Information

The EDC16U31 is a Bosch diesel engine-management platform used on a range of Volkswagen diesel vehicles.

For this application, Bosch identifies:

VW Number: 038906016AJ

Bosch Hardware Number: 0281012538

ECU Family: EDC16U31

The ECU stores calibration information controlling important engine parameters including fuel delivery, boost control, torque limits and emissions operation.

Because the software and immobiliser information can vary between vehicles, an ECU that looks physically identical may not necessarily be directly interchangeable.

Common Symptoms of a Faulty ECU

Possible symptoms of an ECU fault can include:

* Engine will not start

* Intermittent non-starting

* Engine cutting out while driving

* No communication with diagnostic equipment

* Multiple unrelated sensor fault codes

* Loss of sensor reference voltage

* Injector-control problems

* Glow-plug control faults

* Limp-home mode

* Erratic engine operation

* Engine warning light

* ECU memory-related fault codes

Bosch lists examples of known ECU-related fault patterns including:

* No diagnostic communication

* Faulty 5V sensor-reference supply

* P0605 ECU memory fault

* Engine cutting out after extended driving and subsequently failing to restart

Important Diagnostic Information

An ECU should not normally be replaced solely because an engine fault code is present.

Before replacement, check:

* Battery voltage

* ECU power supplies

* ECU earth connections

* Engine-bay fuses

* Main relays

* Wiring harness condition

* Water or corrosion damage to connectors

* CAN communication

* Sensor 5V reference circuits

* Immobiliser-related fault codes

A shorted sensor or damaged wiring can pull down the ECU’s reference-voltage circuit and create symptoms that can appear to be an ECU failure.

Professional diagnostic testing is strongly recommended before replacing the module.

Immobiliser / Vehicle Security Information

This ECU forms part of the vehicle’s immobiliser-controlled engine-management system.

A used ECU generally cannot simply be plugged into another vehicle and expected to start the engine.

Depending on vehicle specification, replacement may require:

* Immobiliser adaptation

* ECU cloning

* Transfer of immobiliser data

* EEPROM / flash-data transfer

* Matching to the instrument cluster / immobiliser system

* Specialist diagnostic programming

A suitably equipped automotive electronics specialist or VW diagnostic technician may therefore be required.

ECU Cloning

In many cases, specialists can clone the information from the original ECU onto a compatible replacement unit.

Cloning may transfer important vehicle-specific information such as:

* Immobiliser data

* Engine calibration

* Coding

* Configuration information

The original ECU normally needs to be readable for a straightforward cloning procedure.

Installation

Before installing the replacement ECU:

* Disconnect the battery correctly

* Inspect ECU connectors for corrosion or damaged pins

* Check wiring for short circuits

* Confirm the original ECU number

* Confirm the Bosch hardware number where possible

Do not repeatedly connect replacement ECUs to a vehicle with an unresolved electrical short, as this may damage the replacement module.

Programming / Coding

Programming, cloning or immobiliser adaptation will normally be required when fitting a used ECU to a different vehicle.

This should be considered before purchasing.

Simply matching the casing or connector shape is not sufficient.

Important Compatibility Note

Please compare the following with your original ECU before ordering:

* VW number – 038906016AJ

* Bosch number – 0281012538

* ECU family – EDC16U31

* Engine type

* Engine power output

* Connector arrangement

* Hardware number

* Software number where available

* Vehicle immobiliser configuration

For the safest replacement, the complete VW and Bosch numbers should match the original unit.

Do not purchase solely using vehicle registration, model year or engine size because several different ECUs were used across the Transporter T5 range.

Condition

Genuine Volkswagen / Bosch used electronic control module.

Removed from a previously used vehicle and may show normal cosmetic marks, scratches, dirt or signs of storage/removal.

Please inspect all listing photographs carefully and compare the labels and connector arrangement with your original ECU.

Important: This used ECU may require specialist programming, immobiliser matching or cloning before it will operate correctly in another vehicle.

Any identifying colour/security markings applied to the ECU must remain intact in the event of a return.

Ideal genuine replacement for a failed, damaged or non-communicating Volkswagen Transporter T5 1.9 TDI Bosch EDC16U31 engine ECU, provided all part numbers and programming requirements are correctly matched.