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That looks interesting!
Abs fault ( the lemon strikes again)
- Thread starter Bern768
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That looks interesting!
alanlucas
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It wasn't that interesting - it just mentioned that the sensor must touch the reluctor ring and gap cannot exceed 0.04" which is 1mm.
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tomcat59alan
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What does I can't find the attachment
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It was a picture. Didn't try to find it but bottom right was wabco D.
alanlucas
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Yes I'm going to take the ecu out and take it apart and check for moisture/corrosion, but I thought if am getting +5v dc at the RH connector and Kernit's Nanocom says "sensor short to another sensor", then it can't be the ECU ?
alanlucas
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Logically, the only way a sensor can short to another is inside the connector at the ECU or within the ECU itself or a short in the loom, unless a Nanocom can't actually diagnose a short circuit in the sensor itself ? Also +5v dc at the sensor plug would suggest the ECU is ok.Eye hasunt tried it yet
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If nanocom refers to a non existent sensor (open circuit) as short to another, then the wabco ecu must only have limited options available. Perhaps they never considered a sensor would fail
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Yes you would think so. Though i can only talk from personal experience with the fun I've had
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What's the Ohms across the sensor?
When mine comes up with that message its always (twice) been the OSF Sensor gone Open-Circuit.
When mine comes up with that message its always (twice) been the OSF Sensor gone Open-Circuit.
alanlucas
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950 ohms on both fronts. It's got me proper baffled - 2 brand new sets of sensors and a new cv joint so far as the reluctor ring was cracked, but Kermits has no errors with a cracked reluctor ringWhat's the Ohms across the sensor?
When mine comes up with that message its always (twice) been the OSF Sensor gone Open-Circuit.
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My replacement is 1.23k if i recall. Isn't 1.2k the lower limit? Someone else will know better than i
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The minimum is about 1200 Ohms I think.
All of my replacements that worked first time out of the box have measured over 1200 Ohms.
Does it say BOTH fronts are stuffed? If bnot swap a good side with the bad-side and see if the error report moves with it.
I did this to confirm it was my sensor one time.
alanlucas
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i think its anywhere between 950 and 2000. The nearside one doesn't come up faulty - maybe they are both too low and the ecu isn't recognising either of them ?
alanlucas
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Someone said its in the Rave manual 900-1100
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alanlucas
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Someone from range rovers.net posted this a while back :-
"My car is a 2000 Thor with the later black box ABS / Traction control. Failure modes include open circuit across the signal wires and several cases of 'sensor X short to another sensor'. Although this is often a symptom of a failed ECU, I have tried an alternate ECU and it gave the same faults. ".
"My car is a 2000 Thor with the later black box ABS / Traction control. Failure modes include open circuit across the signal wires and several cases of 'sensor X short to another sensor'. Although this is often a symptom of a failed ECU, I have tried an alternate ECU and it gave the same faults. ".
Datatek
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5 volts at the sensor does not mean there cannot be a short between sensors in the ECU or connector.
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Can I suggest to look at the live data from each sensor when stationary?
On mine there was 2.3V seen by the ECU for all but the failed sensor (where that one was Zero Volts).
When I changed it for a new sensor it then showed 2.2V on the one that had previously had Zero Volts, and the Ohms of the new sensor was 1200.
On mine there was 2.3V seen by the ECU for all but the failed sensor (where that one was Zero Volts).
When I changed it for a new sensor it then showed 2.2V on the one that had previously had Zero Volts, and the Ohms of the new sensor was 1200.
tomcat59alan
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Two failed ECU's?
alanlucas
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The Kerr Nelson brand sensor arrived this morning. Fitted it at lunchtime today, fully greased and pushed right up to the reluctor teeth and the abs and traction lights have gone out. The Kerr Nelson one is physically identical to the previous 2 sensors fitted apart from having a resistance of 1000 ohms. Maybe the system couldn't see the one with 950 ohms because it is at the lower limit of resistance - then again the nearside one reads 950 ohms as well - go figure. Let's see how this one lasts. Time will tell. Will try and get a refund from the "Landrover specialist" now for the duff one as it was supposed to be guaranteed
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alanlucas
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i've also bought a cheap abs ecu srd100501 with the short to another sensor error to see if I can fix it
