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How to Connect the Detroit Diesel Engines using DDDL

Detroit Diesel Engine (for EPA2004 & Older Detroit & MBE Engines)

detroit diesel

Figure 1.1 – DDEC System (DDEC IV)

To connect the DDDL

1). Open Diagnostic Link through shortcut on desktop or click Start – All Programs – Detroit Diesel – Diagnostic Link, it will automatically connect to the ECM, and will displays Error Number 275, then click OK


Figure 1.2 – Error Number (275)

2). After click OK, will displays The Welcome Screen, then click Close

dddl 6.50

Figure 1.3 – DDDL

3). Choose Options from the Tools menu to display the Options dialog box


Figure 1.4 – Tools (Options…)

4). Interface Options – Click the Interface tab to specify the interface you use to connect. Select the combination of interface and COM port that you are using from the Local Communications Interface drop-down list box.

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Figure 1.5 – Local Communications Interface

5). After selected, will displays Options message as below. Click OK then it need to restart the Diagnostic Link.

detroit diesel diagnostics link dddl

Figure 1.6 – Click OK

6). Once connected to the ECM, it will displays Engine Configuration Data as below. Click Close or Print.

detroit diesel diagnostics link

Figure 1.7 – Engine Configuration Data (Engine)

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Figure 1.8 – Engine Configuration Data (ECM Data)

More diagnostics software: here

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