Cummins ISB CM55X Wiring Diagram for 2001 Dodge Ram 24-Valve (Bulletin 3666482)

Bulletin 3666482 is the Cummins engine wiring diagram for the 2001 model year Dodge Ram with the 24-valve ISB and CM55X controller. It applies to ECM part numbers 3946242 and 3947412.

It includes the engine wiring schematic, ECM connector views and pinouts, and sensor and injection wiring. If you're chasing a dead accelerator pedal, a sensor code or a no-start, the engine-side circuit you need is here.

What the diagrams show

• Engine wiring schematic
• ECM connector views and pinouts
• Sensor and injector wiring

Compatibility

• Models: ISB 24-valve with CM55X
• Vehicle: 2001 Dodge Ram 24-valve turbo diesel
• ECM part numbers: 3946242, 3947412
• Publication: Bulletin 3666482
• Document type: Engine wiring diagram
• Year: 2001

Before you buy

This is the engine-side diagram from Cummins. The truck's body and chassis wiring is in the Dodge service manual, not here. Check that the part number on your ECM matches one of the two listed.

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.