Reply With QuoteJust test the sensor,,
Jack that wheel off the ground,
start car, does speedo move?
usually sensor but can just be the two-part wire
your bad English is a million times better than my bad Dutch
Important thing i think what i can't find here, is read out the three amigo fault. First read, eventualy reset, wait next fault, read again... and then fix.
Depending on the fault reading go for shuttle valve as they say above, but i think more often it is a abs sensor failure or wiring failure from the sensor to the slabs unit.
At the moment i'm dealing also with this fault, not much done yet.
Only two read outs and one reset.
Two possible faults written out at the same time, both something about the left front sensor abs.
I think it's a lot of search work and if you have to pay for the repair i should try to sell the disco2 with the fault. (damn why sell the best disco they ever made !!)
I'm driving it for three months with the lights on, waiting for spring to go unther the car and waiting for nanocom. (not yet ordered)
Sorry for the possible bad english !! :-)
The MOD Father
Just test the sensor,,
Jack that wheel off the ground,
start car, does speedo move?
usually sensor but can just be the two-part wire
your bad English is a million times better than my bad Dutch
"How long since you've visited The Good Oil?"
'93 V8 Rossi
'97 to '07. sold.
'01 V8 D2
'06 to 10. written off.
'03 4.6 V8 HSE D2a with Tornado ECM
'10 to '21
'16.5 RRS SDV8
'21 to Infinity and Beyond!
1988 Isuzu Bus. V10 15L NA Diesel
Home is where you park it..
[IMG][/IMG]
YarnMaster
The tests in the attached pdf will allow you to identify a faulty ABS sensor with a multimeter.
I've been helping a forumite who has a recurring fault on his D2 which indicated low output from a rear ABS sensor. Measuring the resistance at the ECU connector we discovered that a brand new part had a resistance 5 ohms below the minimum. The mechanic who installed the sensor apparently "tested" it (probably with the wheel spin test), but the sensor was still causing a low output fault.
cheers
Paul
Last edited by OffTrack; 10th April 2012 at 05:32 AM.
does speedo move
What do you mean by speedo move ??
Look to the speedometer, speedgauge in your vehicle ??
When you turn one lifted wheel it has to move already with the ignition on ??
Thx for the nice and usefull reply's !!
The MOD Father
The D2 speedo takes the same electronic feed as the ABS module, but averages speed from all 4 wheel sensors, so if only one wheel is turning the speedo should still register.
and Offtrack?
why dont you ring and find out how he REALLY tested it?
"How long since you've visited The Good Oil?"
'93 V8 Rossi
'97 to '07. sold.
'01 V8 D2
'06 to 10. written off.
'03 4.6 V8 HSE D2a with Tornado ECM
'10 to '21
'16.5 RRS SDV8
'21 to Infinity and Beyond!
1988 Isuzu Bus. V10 15L NA Diesel
Home is where you park it..
[IMG]
YarnMaster
Hi Pedro,Originally Posted by Pedro_The_Swift
I'll go one better and try the wheel spinning thing myself this afternoon.
Why I suggested the measuring resistance was that in this particular case the sensor a) measures out of spec at the ECU and b) the fault registered is related to low sensor output.
The new, faulty sensor on the D2 has a resistance of 897 ohm while the other three measure around 1300-1400 ohm. The faulty sensor is only slightly below Wabco's minimum resistance figure so it will produce an output, and I'm guessing that it will pass the wheel spin test.
cheers
Paul
YarnMaster
Pedro,
The under-reading sensor still registered movement on the speedo. Perhaps it's more useful for basic dead/undead sensor checks.
cheers
Paul
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