The Delphi DCM3.5 is a widely used Engine Control Unit (ECU) found in many modern diesel vehicles, particularly within the Ford and PSA (Peugeot/Citroën) groups. Whether you are performing a bench flash, repairing a wiring harness, or diagnosing a "no start" issue, having an accurate pinout is essential.
Some CAN interfaces require a 120-ohm resistor between CAN High and CAN Low if the ECU is removed from the vehicle network. dcm3.5 pinout
: Provides a direct, raw signal interface (K-Line, CAN-H, CAN-L) to the ECU, essential for troubleshooting when the main OBD-II port is damaged. The Delphi DCM3
Provides exact mapping for critical components including fuel pressure regulators, injectors (e.g., Cylinder 1-4 Positive/Negative), air temperature sensors, and accelerator pedal positions. DCM3.5 vs. DCM3.2: : Provides a direct, raw signal interface (K-Line,
By mastering these 154 pins – from the high-voltage injector drivers to the sensitive CAN lines – you unlock the ability to troubleshoot, repair, and optimize one of the most robust diesel ECUs ever produced.
| Pin | Name | Description | | --- | --- | --- | | 1 | DDC SCL | I2C clock line | | 2 | DDC SDA | I2C data line | | 3 | CEC | Consumer Electronics Control line | | 4 | HPD | Hot Plug Detect signal | | ... | ... | ... |