Service code on a d6t

[Nige]

Here's the appropriate procedure for the Powertrain ECM of a KJL-prefix machine.

I still can't get past thinking it needs ET on it to monitor Desired & Actual IAP. See the attached video. A different engine model I know but the HEUI system electronics works exactly the same way. If Actual IAP does not reach Desired IAP the electronics will not come out to play and there will be no smoke from the chimney.

 

[artree0]

I had sent 13 other codes previous of the last 4 you just commented on. They are on note paper possibly on page 1 of this informative imfo. Think you may have missed those or just got thru them yet. Thanks

 

[Nige]

Sorry I thought what was on the photo was the same as the 4 you listed in the post below it. I’ll take a look at them.

EDIT: After having looked at the photo, a question…….

When you scrolled through all those Codes did you take care to note for which ones the SERV CODE icon lit up.? Because that is the indication of a Code that is Active, any other Code on the list is Logged which effectively means it was there once but is not there now.

 

[Nige]

Take a look at the linked thread, especially posts 50-52 on Page 3. With no more that a couple of pieces of automotive wire you can erase all Logged Codes leaving you with only the ones that are Active (Active Codes cannot be erased)

The famous Cat "Click Box"

Here are a couple of extracts from the Schematics John.

www.heavyequipmentforums.com

 

[artree0]

Asked for psr and they said they could not communicate with it. Did not have one. Told them they are just guessing then. Said to them they need to fix that first if that be case. Is that possible as all are up on my monitor. They even asked if I new what one is. Lol

 

[Nige]

Is that possible as all are up on my monitor.

I suggest that you should scroll through the list of Codes on the Monitor again.
As you do, pay particular attention to the SERV CODE icon. If it is illuminated when a particular Code is displayed on the screen then that Code is Active, if it is not then the Code is Logged and can be discounted for the purposes of trying to find the reason for the No Start condition.

 

[artree0]

Understand that but thought it may give insight to the existing service code. I may gave asked already but can it be started if service codes are up and just some particular ones possibly? Just talking service codes on screen not the problem that caused it. Was told if present they need to be cleared to start and run.

 

[Nige]

Understand that but thought it may give insight to the existing service code. I may gave asked already but can it be started if service codes are up and just some particular ones possibly?

There are certain Diagnostic Codes that could potentially cause a Crank - No Start scenario. They are usually related to the HEUI system but there may be others.

Was told if present they need to be cleared to start and run.

Only if the Code in question is a) Active and b) affects the operation of the HEUI system.
Maybe....... the person who told you that mis-quoted slightly and meant to say that "Active Codes must be diagnosed & repaired (thus turning them into Logged Codes) before they can be cleared." Nothing to do with being able to start the engine.

 

[Nige]

OK, so the 13 Codes from the photo are: -

MID030 is the Monitor System.
MID113 is the Powertrain ECM.
NOTE that there are NO Codes, either Active or Logged, for the Engine ECM MID036............

1. 0096-3 - Fuel Level Sensor.
2. 248-2 - Cat Datalink error.
3. E179-2 - Alternator not charging.
4. 247-9 - SAE J1939 Datalink error.
5. 2674-02 - Multi-velocity program switch. Are you sure you don't mean 0674 (trans intermediate speed sensor #1).? That would make more sense.
6. 673-02 - Transmission output speed sensor #2.
7. 585-02 - Transmission output speed sensor #1.
8. 672-02 - Torque converter output speed sensor.
9. 722-05 - Secondary Brake solenoid.
10. 689-05 - Left Brake solenoid.
11. 590-09 - "Engine Control Module" - "Abnormal Update Rate". FMI 09 pertains to the communication between the electronic controls (engine & powertrain in this case) on the data link. FMI 09 occurs when an electronic control is not able to receive any information from another electronic control, when the electronic control expects to receive information.

12. E281-2 - Steering hydraulic filter restricted.

Of all that list the only think I can think might be remotely concerned with starting is #11 - provided that it is Active.

Again it goes back to ET. It really needs to get it hooked to the machine and check how many ECMs it is seeing, especially is it seeing the Engine ECM.?

 

[artree0]

Up and running!! Ground wire off of engine ecm!! Thanks a bunch!!!

 

[Nige]

Up and running!! Ground wire off of engine ecm!! Thanks a bunch!!!

And that won’t create a Diagnostic Code…..!!!!

I recall one time in a training class that one problem-solving exercise was to troubleshoot an engine ECM with problems. What they had done was pull the power wire part way out of the connector but not so far that you’d notice. That one caused some head scratches I can tell you…..

 

[artree0]

Had bad connections at machine and engine ecm at fuse block that looked to be to hot at one time also. Was so happy that it started that forgot to look if the fix on fuse block cleared them 2 service codes.

 

[Cliffy]

Nige your comment brings back nightmares. A while ago working for a Massey Ferguson dealer we would get the tractors after the training courses. Full of backed out pins, probed wires, cross treaded interior screws, blown fuses, and glazed up from hours of idle.

 

[Nige]

Up and running!! Ground wire off of engine ecm!! Thanks a bunch!!!

Should have put 2 & 2 together - looking back through your posts the problem occured 150 hours after an engine installation.....

 

[artree0]

All service codes gone except the E0281.2

 

[Nige]

Check that the bypass valve/switch setup on the filter head is working as it should and if that’s OK it sounds as though you need a filter change.

 

[Nige]

This is what you're up against. Switch could be bad, spool stuck, spring broken, etc, etc.? Could even be a wrong filter element causing too much restriction. Easy enough to check.

 

[artree0]

E code same as service codes? This is a E code I have now.

 

[Nige]

It is an EVENT, not a Diagnostic Code. Events have the E in front of the number, Diagnostic Codes do not.
Events relate to something on the machine where there is (apparently) no fault with the electronics but something is amiss. The plugged filter Event being a case in point. Just that in the case of a plugged filter warning you need to make sure nothing mechanical is amiss before simply swapping the filter.

 

[artree0]

Questions Questions!! Temperature gauge is not reading temp. Moves went turning key on. When working dozer it goes up just off the bottom of scale maybe 10th of the whole scale but that is like an hour or 2 to do that. Checking sensor on engine it is a 3 wire 3 pin. Talked to parts man at cat says its a 2 wire. Part #264-4297 he says is correct. Have what is thought to be it a 3 wire pin on left side and wondering what that would be? Serial # again kjl01290 engine# thx31754. Have a 2 pin that is there on that side but goes to air intake I think guy said. Will send some pics maybe.