Cummins ISB (4-Cylinder) & ISBe (4- and 6-Cylinder) Wiring Diagram

This wiring diagram covers the electronic control system on the Cummins 4-cylinder ISB and on the ISBe in both 4- and 6-cylinder form. The ISBe is the European-emissions version of the B-series.

It shows ECM connector pinouts, sensor and actuator wiring, fuel system wiring, harness routing and connector views. ISBe engines are fitted to many European trucks and buses and to machines from other manufacturers, whose own manuals often leave out the engine wiring.

What the diagrams show

• ECM connector pinouts
• Sensor and actuator wiring
• Fuel system wiring
• Harness routing and connector views

Compatibility

• Models: ISB 4-cylinder, ISBe 4-cylinder, ISBe 6-cylinder
• Engine family: B-series
• Document type: Wiring diagram

Before you buy

It covers the ISB in 4-cylinder form only. For a 6-cylinder ISB, look at the other ISB wiring diagrams in our Cummins category.

Your engine's dataplate shows the engine model, the engine serial number (ESN) and the CPL number. Compare those with the models above. If you're not sure, email us the dataplate details and we'll check for you.

File format

PDF download. Nothing is shipped. Opens on a computer, tablet or phone.

We're an independent seller and are not affiliated with or endorsed by Cummins. Brand and model names are used only to identify the engines this manual covers.