Caterpillar C7 Wire Diagram (sn. YPG & C7T)


If you are performing any repair or overhaul on this Cat engine, you need the proper information in order to ensure you can perform the job correctly.
This manual is printed by the Caterpillar print shop so you can be sure the information is correct.


Factory printed wire diagram for Caterpillar C7 engines.  Printed on special paper to resist the wear & tear of shop environment.

  • Engine Model: C-7
  • Engine S/N Prefix: YPG & C7T


  1. Wire diagrams
  2. Wire Colors
  3. ECM pin numbering
  4. Sensor torques
  5. Fault codes
  6. Diagnostic procedures


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