Initial Inspection and Diagnostic Overview

DDE7.3 Control Unit

IMPORTANT: Please observe when replacing a control unit with which no communication was possible.

After the control unit has been replaced and programmed, injection quantity compensation must be carried out. The codes of the injectors fitted on the vehicle must be stored on the new control unit. To achieve this, use the service function Injection quantity compensation.

Introduction
The control unit connector is modular and has five connector modules.

Ambient pressure sensor
The ambient pressure sensor is integrated in the DDE control unit and cannot be replaced separately.

Fault handling
The DDE control unit is monitored for various internal faults. If an internal fault occurs, the DDE control unit must be replaced.