jibbyman Posted March 30, 2014 Share Posted March 30, 2014 Hi can any one tell me is there a definitive test for the xyz switch .On test mine shows up as faulty so do I replace ? Quote Link to comment Share on other sites More sharing options...
Rangy35 Posted March 30, 2014 Share Posted March 30, 2014 If it tests faulty, renew it. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted March 30, 2014 Author Share Posted March 30, 2014 Thanks rangy35 will have to bite the bullet and get one. Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted March 30, 2014 Share Posted March 30, 2014 It can be repaired,but you really need two WXYZ switches to make up one good one. What annoys me is how LR keep putting the price up on a poor part that is not being uprated.... Quote Link to comment Share on other sites More sharing options...
elbekko Posted March 31, 2014 Share Posted March 31, 2014 The RAVE has the values it should give (at least the P38 RAVE does), so you can check with that. Quote Link to comment Share on other sites More sharing options...
Rangy35 Posted March 31, 2014 Share Posted March 31, 2014 They are not cheap, sorry for the blunt reply. They do last quite some time, but hang on to the old one, you could help someone else locally and re coop some of the money. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 1, 2014 Author Share Posted April 1, 2014 Hi the diagnostic machine at local garage just said faulty switch no values given so do I need a hawkeye or similar I presume RAVE is a cd and where do get hold of it .cheers Steve Quote Link to comment Share on other sites More sharing options...
elbekko Posted April 1, 2014 Share Posted April 1, 2014 You can find the RAVE here: http://rave.stringsandints.com/ It has a logic table of what the XYZ switch should return. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 1, 2014 Author Share Posted April 1, 2014 Big thanks for the help . Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted April 1, 2014 Share Posted April 1, 2014 Another thought, at least 2 types of diagnostic kit that I know of,(Snap On and Autodiagnos ) will show WXYZ values as invalid even on a healthy car.Testbook I know reads them properly as I've been using it on them for 11 years.... The autobox ecu will log the same gear position monitoring fault if the wiring loom rubs through where it goes over the back of the transfer box.It would be well worth checking if this is the case before believing dodgy diagnostic data. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 1, 2014 Author Share Posted April 1, 2014 Thanks ally thought about that as mine only comes on when running fan on full for about 3 minutes ,this is why as a novice Im after as much info as possible . Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 1, 2014 Author Share Posted April 1, 2014 Just been back to the garage heres what come up on the diagnostics. Dtc (3) 11 can bus time out Plausibility Continues fault Of Can level monitoring Plausibility Continues fault Oe Position switch monotoring Continues fault Have not a clue what this means except is my xyz switch faulty ? Cheers Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted April 1, 2014 Share Posted April 1, 2014 From the way your post is laid out its clear to me the garage are using an aftermarket diagnostic tool. The first two faults relating to the Can bus are because the autobox ecu is failing to send messages to the engine ecu about gear position.This is because it isn't receiving plausible info back from the WXYZ switch. Have you checked the wiring loom for rubbing on the back of the transfer box,if it has it will log EXACTLY the same faults and behave in the same way. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 1, 2014 Author Share Posted April 1, 2014 Thanks again ally will strip off centre console this weekend and check wires . Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted April 1, 2014 Share Posted April 1, 2014 No need to do that,its easier to look up from underneath - no dismantling needed. Another thought,try starting it in neutral rather than park,then go straight into drive,if you don't get the flashing M + S lamps then its likely the WXYZ switch as they usually fail on the reverse contacts,starting in N and going to D misses the bad contacts and the ecu's are happy.... Should have said before,but its still a free test with no spannering. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 1, 2014 Author Share Posted April 1, 2014 Will get under and have a good look if I fit lol .my only issue is It only goes into limp home mode when im driving and using the heater fan on setting 3 or above .I have moved condensation pipes so it seems power related or is this just a symptom . Quote Link to comment Share on other sites More sharing options...
Ally V8 Posted April 2, 2014 Share Posted April 2, 2014 Certainly sounds like something to do with power supply,the heater fan takes quite a lot of current.A good basic check around of battery terminals,fusebox connections etc is first port of call.Dont forget that circuits need earthing as well as power.Do check that loom over the transfer box though. Quote Link to comment Share on other sites More sharing options...
elbekko Posted April 2, 2014 Share Posted April 2, 2014 Yeah, definitely sounds like a bad ground if it's related to other loads on the electrics. You'll get all those nice CAN errors too, because it's a very voltage-sensitive bus. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 2, 2014 Author Share Posted April 2, 2014 Had a look at the loom over transfer box ,do I need to cut off the protective seething as all seems ok ? .Other points when the box changes gear from first to second the stereo losses power momentarily . Quote Link to comment Share on other sites More sharing options...
elbekko Posted April 2, 2014 Share Posted April 2, 2014 Yeah, you have ground/power distribution issues. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 2, 2014 Author Share Posted April 2, 2014 Yeah this is why im reluctant to change switch ,have checked earths in engine bay . Quote Link to comment Share on other sites More sharing options...
Rangy35 Posted April 2, 2014 Share Posted April 2, 2014 Now the story is unfolding, there is way more info now than your first post. What was done to the vehicle before this concern started? There are earths under the vehicle as well. What does the earth look like that goes to the engine and gearbox? are they good and clean and secure. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 2, 2014 Author Share Posted April 2, 2014 Had vehicle about five years no problems this has gradually got worse if I switch on anything electrical lights flickered was not sure if theese were connected .86000 miles on clock ,drives and starts great its just I have to use the fan on less and less power and has started going in limp home mode itself intermittently .where is the earth on the gearbox so I can check .Big thanks for interest Steve . Quote Link to comment Share on other sites More sharing options...
elbekko Posted April 2, 2014 Share Posted April 2, 2014 The RAVE should be able to tell you, it has a full ground distribution schematic with component locations. Quote Link to comment Share on other sites More sharing options...
jibbyman Posted April 2, 2014 Author Share Posted April 2, 2014 Had a look at gearbox can't see any earth.Downloaded Rave for D2 am I right in saying its a PDF file 1500 + page long ? Quote Link to comment Share on other sites More sharing options...
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