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I left my D4's battery disconnected for about 10 minutes then connected a multimeter across the positive and negative cables to check for any potential difference, but there was none. I didn't try it after a shorter delay (eg 30 seconds) but there may possibly be some residual stored capacity for a short period whilst any larger capacitors discharge.Quote:
Originally Posted by drivesafe
When doing a hard reset:
FIRST - open the bonnet - so you don't wake the car up again by opening a door!!
Then: exit car, close all doors and wait around 3 mins until the clock goes out. Then disconnect battery leads and either wait 10 to 15 mins, or short them out. This is to ensure there is no residual charge in the capacitors before you reconnect.
Now reconnect the terminals and restart the car. If you need to repeat, you have to go through the whole procedure again.
Seeing as your're not getting any suspension errors, it could be the TCM that's got wet? It's behind the battery on the firewall. Check that the connectors are not wet or corroded.
Cheers,
Gordon
This is correct Tim.Quote:
Originally Posted by drivesafe
Also as Gordon has said the time in between steps is also critical.
Thanks guys.
Garry, check the connections in the TCCM (Transfer Case Control Module) any sign of corrosion will require a good clean of the terminals.
Again when disconnecting ECU's from the vehicle, again wait for the vehicle to go to sleep for a good 5 mins before disconnecting battery.
Cheers
Thanks to everyone for your posts and information - there is a lot of information.
The fault was still in the car this morning when I got up so I lifted the bonnet and left it while I had breakfast. I then did the hard reboot. Checked the error and it was gone :). Hi/Lo Range available etc.
Went down to Repco to get a radiator hose for my 101 and all was well. As usual Repco did not have what I wanted so I decided to go to SuperCrap. On starting the error was back - no low range:mad:. Drove to Supercheap and got my hose - on start the error was gone and I checked if I had low range then the error came back so stuck in low range :( - did not fancy driving 10km home in low range. Switched off and waited a minute or so and switched back on and error was gone and drove home without a problem:). Just checked it again and all is OK - fingers crossed.
Gordon - glad you mentioned the TCM - that is probably the problem - yesterday morning I took the battery cover off and this was one area that the detailers had missed before I bought the car to I used the hose on spray (not jet) to clean things up:(. Must have got some water in the TCM - surely it should be water proof. So what happens if you drive through a deep puddle - do you loose low range:mad:.
I addition to the hard reboot I understand that there is a soft reboot using the igntion and door locks - is this so? and what is the routine as I cannot find anything on this.
Thanks to everyone for your help - lets hope the problem stays away - no back to gremlins in the 101.
Garry
No, the TCM (TCCM) is NOT waterproof!! Water from wading will rarely get that far up due to air being trapped at the top of the engine bay, but washing it is a no-no!
You'll need to remove the battery, get the TCM off the firewall, disconnect, dry it and all leads thoroughly, reconnect. Good idea to waterproof it while you've got access. If the terminals are corroded, you may need a new TCM :(
Cheers,
Gordon
Another example of poor design on a vehicle that is supposed to be a full on capable 4wd. It is not unexpected that engine bays will get dirty and require cleaning in the traditional way - to me any component in the engine bay should not be able to be damaged by water.Quote:
Originally Posted by gghaggis
I guess the good ole days are gone.
Garry
My response exactly. I released the loom from the clips on the seat, and reattached loosely with zip ties. The frequency of the issue occurring dropped to 2 in 6 weeks. The dealer checked the loom and reattached ( they also advised that there was nothing in the loom to cause the issue )Quote:
Originally Posted by ivery819
The problem resurfaced big time within a day of the dealer service. I think they realise it may be a gearbox issue now, and not suspension.
I have driven over 2000km since the problem showed itself. The more the car is used the less the fault appears and can now be cancelled just by turning the ignition off and back on.
Seems that the module did get splashed and is slowly drying out - where I live corrosion is not likely to be an issue but when I next have the battery out I will pull the module and put some lanolin on the cantacts and try to water proof it.
Cheers
Garry
Hi Garry,
go to a good electrical "goodies" place - like Jaycar for example and get the correct silicon for the job - they have special stuff for sealing electrical contacts (it's non corrosive) - I can't remember the name just now - just ask them and they'll put you right. Failing that I'm sure someone here will steer you towards the right "stuff".
cheers :D
Get some contact cleaner whilst you are there. Clean the contacts first.
You could take the cover off and seal the CB with some of the plasticote:
https://www.aulro.com/afvb/images/im...011/02/582.jpg
and use the silicon grease for the connector.