Discussion:
Cat EP16K Fault code dd

Have a Cat EP16K s/n ETB4B01584 that has code of dd on the display. The lift will not do anything.

Does anyone have advice or a good cure? Please advise.

Thanks
  • Posted 24 Jan 2013 02:03
  • By VXman
  • joined 14 May'09 - 34 messages
  • Oklahoma, United States
Showing items 1 - 10 of 10 results.
actually for this truck code 10 and 20 refer to the right and left motor armature having a fault such as being shorted. Code 10 being right armature and Code 20 being Left.

you say you found some faulty/damaged sensor wires at the motors? This would be the harness that goes to the sensor inputs on the motors? it splits between both motors, 4 wires going to each motor? correct? They do have the terminals on in such a way you cant connect them completely wrong, but since polarity plays a part in this you still could have them connected backwards.

are you sure you hooked them up correctly?
On the motor sensor harness's there are wire numbers and colored wires that connect together:

On the left motor harness the wire number/color configuration is:
129 - Green wire
130 - Yellow wire
131 - violet wire
132 - orange wire

On the right motor harness the wire number/color configuration is:
124 - Green
125 - Yellow
126 - Violet
127 - Orange

Each harness should be tied together with each group of wires just long enough to reach thier respective motor.

Double check your connection configuration and make sure these wires are connected correctly.
Now there are other things that can trigger these codes such as bad transistors or maybe a bad drive board but lets check the simple things first.
  • Posted 27 Jan 2013 14:53
  • Modified 27 Jan 2013 14:55 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,692 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Make sure there is no moisture in the motors then Check for a stuck brush in the motors, Ive had the exact same codes before because of water and stuck brushes
Fault 10 & 20 Are right and left armature
  • Posted 26 Jan 2013 22:53
  • Modified 26 Jan 2013 22:56 by poster
  • By Howitt
  • joined 13 Feb'09 - 80 messages
  • Ohio, United States
Bachman,
10 is the service warning light letting you know the service is overdue.
20 is the stall timer this allows the truck to shut down when truck drive motor overheats.
Ensure all terminals on motors cleaned and refit if this dose not clear fault then you may have to assume a motor is now faulty or a motor thermal unit has become faulty.

Regards Titus
  • Posted 25 Jan 2013 06:17
  • By Titus
  • joined 6 Jul'10 - 185 messages
  • North Yorkshire, United Kingdom
Bachman,
10 is the service warning light letting you know the service is overdue.
20 is the stall timer this allows the truck to shut down when truck drive motor overheats.
Ensure all terminals on motors cleaned and refit if this dose not clear fault then you may have to assume a motor is now faulty or a motor thermal unit has become faulty.

Regards Titus
  • Posted 25 Jan 2013 06:17
  • By Titus
  • joined 6 Jul'10 - 185 messages
  • North Yorkshire, United Kingdom
I found a broken wire going to left drive motor and temp light is off but now it won't do anything and keeps flashing 10 then 20 on dash display

I am trying to get a manual but I haven't located one just yet.
  • Posted 25 Jan 2013 05:20
  • By VXman
  • joined 14 May'09 - 34 messages
  • Oklahoma, United States
yep its a temp sensor light
if the motor controller or one of the motors overheats that light will turn on or flash depending on what stage of overheating it is in. Generally it is accompanied by another light designating which system is overheating. Such as the drive motor light or pump motor light. Either motor light will be lit along with the temp light to let you know which system is overheating. Also the drive or pump speed will be slowed down to let the system cool off, when it is cool the lights should turn off.
Of course if you have a short somewhere it may not be overheating but still triggering the system falsely.
  • Posted 24 Jan 2013 12:36
  • Modified 24 Jan 2013 12:38 by poster
  • By swoop223
  • joined 23 Mar'12 - 3,692 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
Even without a manual, you know that's a temp sensor warning light. Common on these when the wires going to the drive motors get unplugged. Lift the mast high and block it. Check the wires going to the front of the motors. Replace any connectors that look corroded. You need a manual to proceed. That DRS switch could be up or down from some bonehead touching it. This truck will do tons of functions and checks on its own....with the switch up or down and toggling the shifter and lift arm. You need a manual
  • Posted 24 Jan 2013 11:01
  • By EasiTek
  • joined 12 Aug'08 - 533 messages
  • Ontario, Canada
Thanks for you help, there is a light that stays lit on the display and we are trying to figure out what it is. It is right below the hour meter and it is yellow, it is long like a thermometer and is solid yellow halfway.

Also this unit does not have any power and is slow. We do not have a manual on this unit so any help is appreciated.

Thanks
  • Posted 24 Jan 2013 08:05
  • By VXman
  • joined 14 May'09 - 34 messages
  • Oklahoma, United States
according to the manual if a dd shows up the unit is in the wrong mode on the DRS switch. It says if the DRS switch is set to diagnostic position 'D' and seatswitch is closed it will display a 'dd' on the dash.
I would make sure your DRS switch is in the Run position above all things first.
  • Posted 24 Jan 2013 05:11
  • By swoop223
  • joined 23 Mar'12 - 3,692 messages
  • North Carolina, United States
You've been swooped!
swoop223@gmail.com
VXman,
I suspect that the diagnostic procedure has been initiated. Looking at my notes I would check the operation of the diagnostic switch refferred to as the DRS switch, the switch in the running mode should be locked in the central position.
DD is displayed if any items involves any problem and fails DD is also displayed when diagnostics is started without removing the fuses line fuse and pump fuse in this case diagnostics is prohibited from going to the first step.

Regards Titus
  • Posted 24 Jan 2013 04:23
  • By Titus
  • joined 6 Jul'10 - 185 messages
  • North Yorkshire, United Kingdom

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