Cat Service Codes

[JS430]

2005 D5N, Trying to understand the service codes and need a little help. I understand the "Active" and "logged" codes and I'm guessing 030=monitoring system, 036=engine, and 113= transmission. I've also figured out how to retrieve the codes and looked up what most of them mean. Several are either high, low, or unstable voltage codes, could these be from a low battery, boosting off, or bad connection? Also what causes a code to become a stored code? If it's low voltage and corrects itself does the code automatically go into logged codes? I'm also guessing the FMI is the same for all codes? Example .03 = high voltage

I started looking at these after finding a leaking transmission hose and wanted to see if the transmission had gotten hot and logged a code. Of the 9 logged codes 5 are transmission codes but they appear to be high, low, or erratic voltage codes. Would a high temp code stay logged?

 

[Nige]

Serial Number first please. "2005 D5N" in the equipment world is akin to saying "White Ford F150".
EDIT: Just found it in another thread - AGG01763.

"High/low voltage" refers to the stabilised 5v or 8v (as applicable) power produced in the ECMs that is used to power all the sensors sensors. It has no relation to the machine system voltage (24v).
"Unstable, Intermittent, or Incorrect" generally refers to the signal from a sensor of some sort.

A "stored" Code is a Logged Code. At one time it was Active but it is not Active right now. Logged Codes can be erased, Active Codes cannot. To erase an Active Code first you have to fix it, thus turning it into a Logged Code.

Can you post a list of all the Active/Logged Codes you have.?

I started looking at these after finding a leaking transmission hose and wanted to see if the transmission had gotten hot and logged a code.

If the transmission got hot it would most probably have created a System Event, not a Diagnostic Code, unless the unlikely happened and the high temperature caused a solenoid or sensor to malfunction. The latter would create a Diagnostic Code.

Diagnostic Codes are created when a an electronic component in a machine system malfunctions.

System Events are created when the value of a system parameter (e.g. temperature, pressure, etc) falls outside the limits set for that parameter in the electronic control software.

 

[JS430]

Nige, I thought about the serial # after I posted, should have done an edit.
030
096.03
249.02
819.02
036
296.09
113
168.04
269.04
298.02
722.03
722.05

I'm just trying to go over this dozer before I use it. The inspection report from dealer stated "oil drip from belly pan" the leak was easy to find under the floor board. It's the hose coming from the rear filter to the top of transmission. Not sure on suction or discharge side yet. Looks like the hose connection angle was too tight and caused a leak at back of crimp. Not too bad of a repair just worrisome if it leaked too much fluid out and got hot. Is there anyway to tell about system events? Dealer said only repair they ever made was to the A/C system at 6,300 hrs and it's at 7,100 hrs now. Honestly they didn't want to answer too many questions on a 20 yr old machine. Going off a maintenance decal in the cab this machine has only had 2,400 hrs on it since 2014 I think it was. I plan on dropping the belly pan Monday but from above it doesn't look too bad. The belly pans on the last dozer we had were terrible when we got it. I couldn't believe the wiring and hoses didn't rot away from dirt, oil, and grease

 

[Nige]

Is there anyway to tell about system events?

To look at historical Events it would need Cat ET hooked up to the machine and download a Product Status Report. Events do not show up on the list of Codes that you access via the Monitor Panel.

If you study the Click Box thread you will be able to figure out a way of erasing all the Logged Codes. That would be good in as much as you would 100% know that any new Code that popped up would have done so during your ownership. The 4-pin "Monitor Service Connector" (CONN 3) required for the Click Box is shown on the illustration. It is right next door to the circular 9-pin ET Service Connector.



The Logged Codes are as follows: -

030 Monitor Panel
096.03 - Fuel level Sender - voltage above normal
249.02 - Datalink - data erratic, intermittent, or incorrect.
819.02 - Main Display Module - expected information not received

036 Engine ECM
296.09 - Engine ECM unable to communicate with Powertrain ECM

113 Powertrain ECM
168.04 - Machine system voltage below 21.3v.
269.04 - Transmission temperature sensor - supply voltage (8v) below normal
298.02 - Service brake pedal switch - incorrect inputs.
722.03 - Secondary brake solenoid - voltage above normal.
722.05 - Secondary brake solenoid - current below normal.

 

[JS430]

Thanks Nige. I have skimmed over the click box thread and will really look into it more when I'm on night shifts at the plant. I did notice the connectors when I was cleaning the cab. Thinking I can build a click box or hopefully find a used one.
I'm digging a little too deep into this thing but can't make myself buy older equipment and just get in it and go. Life has to be much easier for people that aren't mechanics or electricians.

 

[Nige]

You can McGyver something temporary using no more than a couple of short pieces of automotive electrical wire. See Page 3 of the thread.