Detroit Diesel Troubleshooting Diagrams

DDEC III/IV System Series 60 Diesel Engine

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DDEC III/IV provides an indication of engine and vehicle malfunctions. The ECM continually monitors the DDEC III/IV system.

Any faults that occur are stored as codes in the ECM’s memory. These codes can be accessed in any of three ways: ‪

  1. A DDR can be used to read the codes.
  2. A personal computer (PC) connected to the ECM through a translator device which converts J1708 to RS232 protocol can be used.
  3. The Check Engine Light (CEL) or the Stop Engine Light (SEL) is illuminated.
    • The CEL (panel mounted yellow indicator light) illuminated diagnose condition as soon as convenient.
    • The SEL (panel mounted red indicator light) and CEL illuminated, a major fault occurred and immediate attention required to avoid engine damage.
    • Automatic engine shutdown or rampdown is available as an option. A shutdown override switch is required to allow the vehicle to be moved to a safe location during automatic shutdown or rampdown.

DDEC III/IV features programmable with a Diagnostic Data Reader (DDR) are: ‪

  • Password
  • Droop
  • Active hp braking
  • Cruise control
  • Engine brake
  • Vehicle speed limiting
  • Vehicle speed sensor
  • Variable Speed Governor cruise switch
  • Idle timer shutdown
  • Idle timer between air temperatures
  • Vehicle ID number (VIN)
  • Idle adjustment
  • Progressive shifting
  • Engine protection

DDEC III IV System Series 60 Diesel Engine DDEC III/IV System Series 60 Diesel Engine

Written by sam

September 28th, 2011 at 4:06 am

Posted in Fuel System

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2 Responses to 'DDEC III/IV System Series 60 Diesel Engine'

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  1. I have problem with my 250kva Detroit2 diesel engine ecm.series 60 generator My start alright but the speed is not up to nominal speed. Pls. I mean 60Hz. The generator runs on low speed or ideal speed.please I need a solution to fix this fault.

    Alex konadu

    21 Sep 18 at 10:23 pm

  2. I have a problem with my 250kva Detroit diesel engine generator series 60.the generator start alright but the speed is not up to nominal speed. The generator run on low speed or ideal speed.please I need a solution to fix this fault. Thank

    Alex konadu

    21 Sep 18 at 10:30 pm

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