Cummins QSL9 Laminated Wire Diagram


This is the factory wire diagram for this Cummins engine. It is laminated for maximum life. Includes specifications, & fault code info.

SKU: TM6478 Category:


  • ECM pin locations
  • Wire diagram (color-coded)
  • Connectors
  • Each controlled or controlling sensor, etc
  • Cummins responsibility & truck manufacturer responsibility connections
  • Fault codes, fault reasons, fault effects

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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