Caterpillar C9 Wire Diagram 9DG6040 & up, ETK


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Caterpillar C9 Wire Diagram 9DG6040 & up, ETK

CAT C9 electrical schematic covers engine serial numbers:

  • 9DG6040 and up
  • ETK


Caterpillar C9 Wire Diagram 9DG6040 & up, ETK

Factory printed Caterpillar C9 Wire Diagram 9DG6040 & up, ETK ECM wire diagram is printed by the Caterpillar print shop so you can be sure the information is correct.  Printed on special rugged, tear resistant paper to ensure many years of use.  For Caterpillar C-9 engines with serial prefixes of:

  • 9DG6040 and up
  • ETK
If you are performing any troubleshooting on this Cat engine, you need the proper information in order to ensure you can perform the job correctly.

Doing an overhaul on this engine? Check out our complete engine overhaul set

Caterpillar C9 Wire Diagram 9DG6040 & up, ETK
Coverage includes:
  • Wiring from ECM to injectors, sensors, etc.
  • Diagnostic tips
  • Fault codes
  • Sensor testing has been working with the Caterpillar print facility for many years, working to ensure the correct factory service information is available to fleets, municipalities, water districts, independent service facilities & more.  At we have always felt that it’s critical that the industry mechanics be supplied with the correct torque specifications, dimensions & procedures, electronic diagnostic information be made available.

The changes in the trucking industry over the decades have made it critical to “do the job once, do the job right”.   Procedures that may have been acceptable years ago would now likely cause rapid failures in a truck engine if they were used on present day engines & drivetrains.

The customer has two great advantages when dealing with

  1. Factory printed manuals
  2. Most of all orders are shipped within 24 hours
Caterpillar C9 Wire Diagram 9DG6040 & up, ETK

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