swapping entire rear diff housing for stronger bearings

[BillyGoatCountry]

My 2008 Hilux has had a few problems with rear wheel bearings and leaking seals.

I was told i can swap over the entire back end from a 2009 - 2015 which i have now done , These later model have a bigger wheel bearing on the rear axles.

I picked up the back end excluding diff center for $ 650 from a wrecker.

I used my old diff which was a clean swap over , The brake lines needed to be swapped over as they are slightly different.

I used my old ABS sensors and wiring as the new model have slightly different plugs , I currently have an ABS warning light on the dash so i either pinched a cable during the process or are the old ABS rings different between the older 2005 - 2008 model ?
i didnt measure the ABS ring when i did my swapover.

i didnt find any threads on this topic.

[hiluxxury]

Ring will be out of alignment with the sensor.

[BillyGoatCountry]

Ring will be out of alignment with the sensor.

why would the ring be out of alignment ?

I used the axles that came with that diff / axle housing complete with original sensor ring , the sensor ring is in the same position , the old sensors were centrally mounted in the hole ?

my only obvious thought is the sensor ring has a different number of grooves from the old one , or i have pinched a wire during the changeover.

[Hillclimber]

I have the same issue. 2015 diff into 2006, due to bigger bearings and leaking seal issues. Popped in the old sensors, which are slightly different diameters due to the harness being different. Think it might be a spacing issue. Same number of teeth on ABS rings and otherwise they look the same. Anyone have any ideas??? I am thinking of putting the new sensors in and making a patch harness to join the old to the new.

[Rob_Wood]

Watching intently as I have an issue with my 2004 and I wanna see what the best solution turns out to be.

[Hillclimber]

Tried today. Made a temporary harness using old main harness plug and installed new sensors to match the later model diff.
Borrowed a mates scan tool and am now getting debris on sensors fault, straight from turning vehicle on. Sensors are clean. I don't think harness length would impact sensor feed. Any thoughts/suggestions welcome.

[Rob_Wood]

Tried today. Made a temporary harness using old main harness plug and installed new sensors to match the later model diff.
Borrowed a mates scan tool and am now getting debris on sensors fault, straight from turning vehicle on. Sensors are clean. I don't think harness length would impact sensor feed. Any thoughts/suggestions welcome.

ptommo59

I think is a bit of a guru on scan tool stuff, he might have some advice? But from my perspective it might be as simple as the "Microsoft Fix All" ... Restart the computer or reset the codes or something like that?

[walledroof]

Thinking the debris error might be related to the spacing between sensor and ring, maybe try adjusting it slightly? Just a thought though.

[BillyGoatCountry]

sorry for not replying earlier after starting this thread.

I didnt get time yet to fit the sensors that came with the 2014 rear axle unit but based on the reply by HillClimber i think thats where the issue will be , that the old style ABS sensors dont work in the later model axle / diff housing so i will adapt the cable connectors and fit the newer sensors and see if the fault clears.

TBA

[Hillclimber]

Finally got this sorted.
When swapping the housings over the old larger pickup sensors are required. The resistance is different between the larger and thinner sensors and the abs module will throw a code if they are not matched. We put the newer, of the older (larger sensors) in and modified the old harness to suit. We came across three different sensors.
Old old (Larger pickup and one piece harness, plugs in at each sensor).
Old new (Larger pickup and lead from each sensor joins harness at diff centre).
New (Smaller pickup and lead from each sensor joins harness at diff centre).

We went with the old new type to raise the height of the plug to top of diff centre. Not sure what years the different sensors run from. Toyota had trouble trying to source the correct plugs and pins so we just used deutsch connectors. We also come across different size o-rings on the sensors. Some are fitted with larger o-ring making the sensor difficult to fit, considering they are plastic. Swapping to smaller ones off the older sensors corrected this.