Mod to enable traction control while rear diff lock engaged

[alsdid]

Has anyone done this mod to a PB Challenger? I am aware that it has been done for the late model pajeros.

[Kingbrown]

There's a thread on the topic.

https://www2.pajeroclub.com.au/forum/showthread.php?t=44086&highlight=Enable&page=4

Modification requires interception of two connections between the difflock ecu and the astc ecu (connector C35 pin14 and C15 pin3 - or C23 pin10).

[hoit]

OK if I have understood this correctly there are two related mods

1) Disable ASC (Stability Control) when in 4Hlc and 4Llc mode
As explained by OJ:
"Run a "bridge" wire from Pin 1 of the ASC OFF switch (blue with black trace) to Pin 7 of the 4wd Indicator ECU which is located behind the glovebox (violet wire). That is IT! so simple."

2) Enable ATC (Traction Control) when the Rear Diff is locked
As per KingBrown and others:
"Modification requires interception of two connections between the difflock ecu and the astc ecu (connector C35 pin14 and C15 pin3 - or C23 pin10)"

and for those with the Rear Diff Locker, ideally you would do both. Have I got this correct ?

Next question is about the ASC switch. Does this only disable ASC and not ATC. Is ATC only disabled when enabling the Read Diff Locker.

I'm about to head to Fraser Island in several weeks and I probably won't get around to making the mods. So what mode should I run in (besides turning off ASC every time I start the car). Is 4Hlc a good starting point for the run up the beach. Will I need 4Llc and potentially RDL when tackling Indian Head ?

[alsdid]

Thanks Kingbrown.........

[PeePee]

OK if I have understood this correctly there are two related mods

1) Disable ASC (Stability Control) when in 4Hlc and 4Llc mode
As explained by OJ:
"Run a "bridge" wire from Pin 1 of the ASC OFF switch (blue with black trace) to Pin 7 of the 4wd Indicator ECU which is located behind the glovebox (violet wire). That is IT! so simple."

2) Enable ATC (Traction Control) when the Rear Diff is locked
As per KingBrown and others:
"Modification requires interception of two connections between the difflock ecu and the astc ecu (connector C35 pin14 and C15 pin3 - or C23 pin10)"

and for those with the Rear Diff Locker, ideally you would do both. Have I got this correct ?

Next question is about the ASC switch. Does this only disable ASC and not ATC. Is ATC only disabled when enabling the Read Diff Locker.

I'm about to head to Fraser Island in several weeks and I probably won't get around to making the mods. So what mode should I run in (besides turning off ASC every time I start the car). Is 4Hlc a good starting point for the run up the beach. Will I need 4Llc and potentially RDL when tackling Indian Head ?

I have been to Fraser plenty of times in my PB. Just turn the ASC switch off every time you start the car. My understanding this turns off the stability control and works very well. I run the car in all wheel drive most of the time unless crossing Indian Head or Ngkala or something very soft. I run the tyres at 15 but have Micky Thompson's and that works very well for me and stops any issues with the limp mode from the auto.

Use your head and think about what you are doing and you will be fine, momentum when needed is smart. The right tyre pressure is smarter. Enjoy your trip.

[nj swb]

I have been to Fraser plenty of times in my PB. Just turn the ASC switch off every time you start the car. My understanding this turns off the stability control and works very well. ... I run the tyres at 15 but have Micky Thompson's and that works very well for me and stops any issues with the limp mode from the auto.

I have a similar experience with my Pajero - ASC off, low pressure with aggressive tyres. TC flashes sometimes, but not to the extent that I've noticed an effect on progress.

I'm wondering if those experiencing problems are running less aggressive tyres, which are slipping much more, leading to more braking by the TC?

With the aggressive tyres I run, if I don't have the pressures right, they dig rather than simply spin. Are less aggressive tyres spinning more, but slipping on the surface without digging?

[PeePee]

I have a similar experience with my Pajero - ASC off, low pressure with aggressive tyres. TC flashes sometimes, but not to the extent that I've noticed an effect on progress.

I'm wondering if those experiencing problems are running less aggressive tyres, which are slipping much more, leading to more braking by the TC?

With the aggressive tyres I run, if I don't have the pressures right, they dig rather than simply spin. Are less aggressive tyres spinning more, but slipping on the surface without digging?

Never given that much thought, seems reasonable the highway tyre might slip much easier than the MT's I guess.

[coughy]

i have both mods done and works a treat
when i engage 4h asc gets turned of as per the bridge wire

traction control gets turned of when i fick a switch

and the rear diff lock i can activate when i feel like it hehehehe on a nother switch

[PeterC51]

OK if I have understood this correctly there are two related mods

1) Disable ASC (Stability Control) when in 4Hlc and 4Llc mode
As explained by OJ:
"Run a "bridge" wire from Pin 1 of the ASC OFF switch (blue with black trace) to Pin 7 of the 4wd Indicator ECU which is located behind the glovebox (violet wire). That is IT! so simple."

2) Enable ATC (Traction Control) when the Rear Diff is locked
As per KingBrown and others:
"Modification requires interception of two connections between the difflock ecu and the astc ecu (connector C35 pin14 and C15 pin3 - or C23 pin10)"

and for those with the Rear Diff Locker, ideally you would do both. Have I got this correct ?

Next question is about the ASC switch. Does this only disable ASC and not ATC. Is ATC only disabled when enabling the Read Diff Locker.

I'm about to head to Fraser Island in several weeks and I probably won't get around to making the mods. So what mode should I run in (besides turning off ASC every time I start the car). Is 4Hlc a good starting point for the run up the beach. Will I need 4Llc and potentially RDL when tackling Indian Head ?

The run up the beach you can almost do in 2WD, certainly 4H no problem. Never needed 4Hlc on Fraser main tracks.

[pajeromack]

I'm about to head to Fraser Island in several weeks and I probably won't get around to making the mods. So what mode should I run in (besides turning off ASC every time I start the car). Is 4Hlc a good starting point for the run up the beach. Will I need 4Llc and potentially RDL when tackling Indian Head ?

Traction control isn't much use on sand.
Don't need 4HLc on the hard sand. Indian head isn't too bad in the Challenger. You'll probably want low range around Ngkala rocks.

[PeePee]

Traction control isn't much use on sand.
Don't need 4HLc on the hard sand. Indian head isn't too bad in the Challenger. You'll probably want low range around Ngkala rocks.

You will need low range to do the bypass track at Ngkala and momentum, don't try it see, you will be bogged, use momentum and you should be fine.

[pajeromack]

Yeah that bypass track is seriously soft. Some of the softest sand I've ever driven on. Don't stop or you'll get bogged. I had to back up a few times.

[whereswes]

Traction control isn't much use on sand.

x2 not many terrains more momentum sapping than sand and the ATC applying braking force via the ABS doesn't help.

Thumbs up to the Challenger for the high speed reengaging the ATC. Mates Prados are reengaging at around 60kmh and Suzuki GV was a dismal 15kmh. Not exactly sure what the reengaging point is with the PC but it must be above 90kmh

Cheers
Wes

[Ent]

The manual I think states 100kmph before it re-engages.

Friends Suzuki Grand Vatara was in low range doing the desert. Why low range, his ASC kicked in at at think 30kmph, so just what you do not need in sand dune country. In low range it is permanently disabled.

Given the experience I have had with my eLocker it gets full thumbs up. Brother put one in his Triton and equally impressed. DooSo with rear and centre engage plus this is pretty impressive in mud.