Cat D6N fault code help and location please

[catfleet1]

Hi

Have a Cat D6N Ser number OPBA02065 Year 2014

She has come up with a code of 673-2 (powertrain Fault)

Google has told be transmission output speed sensor 2 ? Would any one know where on the trans it would be please.

Also Looking on the dash under powertrain status. its showing spd3 clutch solenoid current 70.9% when its in nurture.

Im guessing its just the sensor playing up

Any help would be spot on

 

[Nige]

673-2 is the signal from the transmission output speed sensor #2 "erratic, intermittent, or incorrect". It may well be a wiring fault. There is no access to this sensor because it is buried inside the component. Removal of the transmission is required to get at the sensor. So cross your fingers that the sensor is not the problem...........

See where the attached troubleshooting procedure gets you.
Ihe schematic in it is only an abbreviated one showing the wiring for the sensor. If you want a complete electrical schematic for the whole machine please ask.

 

[catfleet1]

Oh Joy Joy fingers crossed its a rubbed wire.

Thank you for the info top job your a star, Looks like the tester is coming out but not the transmission fingers crossed ;-)

 

[Nige]

Just out of interest how many total hours are on the machine.?

 

[catfleet1]

10100hr on the old girl

 

[Nige]

10100hr on the old girl

If the transmission is original you're not too far away from a transmission overhaul in that case. All the transmission intermediate/output speed sensors, internal wiring harness and clutch solenod valves would normally be replaced in said overhaul.
There are two output speed sensors and the tranny will operate just fine with only one, although if that 2nd one gives up the ghost you have will a beached whalle on your hands.

 

[catfleet1]

Not looking to have a beached whale on my hands.

Thanks for the info tho well worth doing if it has to come out. fingers crossed it stays in though

 

[Nige]

What you'll find when the transmission is finally pulled for overhaul is that the insulation on everything electrical/electronic is the consistency of the crackling on a roast pork joint. It's a result of heat........