Truckers Report Jobs

Find Trucking Jobs

Company Driver Company Driver Dry Van Dry Van Flatbed Flatbed Refrigerated Refrigerated Specialized Specialized Owner Operator Owner Operator
More Trucking Job Searches ⌄ Fewer Trucking Job Searches
⌃

C-15 Flash Codes 66 & 67

Discussion in 'Trucks [ Eighteen Wheelers ]' started by joecitizen, Jan 29, 2014.

  1. Jan 29, 2014 #1
    joecitizen

    joecitizen Light Load Member

    242
    38
    Mar 15, 2009
    Tucson, AZ
    0
    I checked out the thread about fault codes and found flash code 66 & 67 are; Multi-Function Output #6 Open/Short Circuit (flash code 66) & Multi-Function Output #7 Open/Short Circuit (flash code 67)

    What does this mean though? I have been having issues with setting my cruise control, whether I need to set cruise while driving down the road or bumping up the idle when parked. I have to wiggle the set/resume switch to get it to work.

    Thanks for any help.
     
    joecitizen, Jan 29, 2014
    joecitizen, Jan 29, 2014
    #1
  2. Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.

  3. Jan 30, 2014 #2
    05 FreightShaker

    05 FreightShaker Light Load Member

    265
    30
    Jan 20, 2013
    Houston
    0
    Most likely bad connection on the CC switch. Check the ECM wires as well for any corrosion. Multi-function output is exactly what the name implies. It just means that the connector can be used from cruise control to jake brake to fan switch just a program setting away which is why the codes cannot tell you what the specific device is.
     
    05 FreightShaker, Jan 30, 2014
    05 FreightShaker, Jan 30, 2014
    #2
    joecitizen Thanks this.
  4. Feb 13, 2014 #3
    joecitizen

    joecitizen Light Load Member

    242
    38
    Mar 15, 2009
    Tucson, AZ
    0
    turns out the code has something to do with the Eaton "Top 2" feature on my trans. Turned off feature in the ecm...we'll see how it goes.
     
    joecitizen, Feb 13, 2014
    joecitizen, Feb 13, 2014
    #3
  5. Feb 13, 2014 #4
    05 FreightShaker

    05 FreightShaker Light Load Member

    265
    30
    Jan 20, 2013
    Houston
    0
    Good let me know how it goes! The Top two feature is just a semi-auto trans where it can automatically shift between two of the final gears. Its not really needed since the driver should be in control of their truck, not the computer. Did you turn the feature off with CAT ET?
     
    05 FreightShaker, Feb 13, 2014
    05 FreightShaker, Feb 13, 2014
    #4
  7. Feb 23, 2014 #5
    joecitizen

    joecitizen Light Load Member

    242
    38
    Mar 15, 2009
    Tucson, AZ
    0
    Yes, well thought it was until I got to Iowa and truck coded again. There is a short somewhere in the wiring harness going to the solenoid for the "top 2" feature. I dont like or want that feature so, luckily, I ended up with a service tech @ Ziegler CAT in Altoona that actually took the time to listen to me and figured out how to bypass the solenoid. The wiring harness from ecm has been unplugged, the airlines are now the way a typical 13spd would be, and the ecm has been set to manual option 1.

    Been a week and so far so good.
     
    joecitizen, Feb 23, 2014
    joecitizen, Feb 23, 2014
    #5
    Cetane+ Thanks this.
  • Truckers Report Jobs

    Trucking Jobs in 30 seconds

    Every month 400 people find a job with the help of TruckersReport.