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Cummins ISM Wire Diagram CM876


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Cummins ISM Wire Diagram CM876

Printed by Cummins.  Laminated fold-out factory wire diagram for the engine control system for this Cummins engine.  Includes specifications, & fault code info.

Whether you are chasing ECM fault codes or ECM related wiring issues this laminated wire diagram is a real lifesaver.  Wire diagrams are color coded for ease of use.

For fault codes, it provides fault diagnostics & solutions.  For electronic control issues it provides information such as ohms, volts and steps for troubleshooting & repairing.

Since it is laminated, it is easy to keep clean and increases its life.

Cummins ISM Wire Diagram CM876

Control Module:


  • ECM pin locations
  • Wire diagram (color-coded)
  • Connectors
  • Each controlled or controlling sensor, etc.
  • Cummins responsibility & truck manufacturer responsibility connections
  • Electrical specifications & reading parameters (volts-amps-ohm readings)
  • Fault codes, fault reasons, fault effects
Cummins ISM Wire Diagram CM876

Laminated surface allows for the use of erasable marker to make notes while performing diagnostics which can be erased when finished.


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Cummins ISM Wire Diagram CM876