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Home >> Volkswagen >> 2005 >> Jetta TDI, Automatic >> Repair and Diagnosis >> Transmission >> Transmission Control Systems >> 1.9L - On Board Diagnostic (OBD) - Engine Code(S): BRM (A5 Platform) >> 01 On Board Diagnostic (OBD) >> Diagnosis And Testing >> Diesel Direct Fuel Injection ECM, Checking >> Diesel Direct Fuel Injection ECM, Replacing

Diesel Direct Fuel Injection ECM, Replacing

Removing

NOTE:

When the Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- electrical harness connector is disconnected, the adaptation values are erased and the DTC memory content remains intact.

Work procedure 

Check the identification of the previous Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- as follows:

-- Connect the scan tool.

-- Switch the ignition on.

-- Using the scan tool, select "Vehicle information".

-- Select " Calibration Identification" in vehicle information.

The electronic control module identification number will be displayed, e.g. 06A906032NA 4983

-- Record the electronic control module identification number.

-- End diagnosis and switch the ignition off.

Procedure 

-- Remove the wiper arms.

-- Remove cowl panel.

-- Disconnect the Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- electrical harness connector.

Fig 1: Identifying Engine Control Module Bracket & Securing Tab
GWWM24-0030Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Press securing tab - arrow- to the left and pull Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) out.

-- Remove the Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248-.

Installation 

Installation is performed in reverse order of removal. Note the following:

Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- reprogramming

-- The new Diesel Direct Fuel Injection (DFI) Engine Control Module (ECM) -J248- and immobilizer must be activated.

Final procedures 

After the repair work, the following work steps must be performed in the following sequence:

  1. Check the DTC memory. Refer to DIAGNOSTIC MODE 03 - READ DTC MEMORY .
  2. If necessary, erase the DTC memory. Refer to DIAGNOSTIC MODE 04 - ERASE DTC MEMORY .
  3. If the DTC memory was erased, generate readiness code. Refer to READINESS CODE .