abs light
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abs light
my abs light has come on on my van i hit a pot hole a couple of hours before light came on so dont know if that caused it i got the light checked which was showing rear wheel right so got light switched off and it stayed off for a week but is back on again is it the sensor thats faulty or what else can cause this
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From: Lincs.
I have done a couple of Fiats in the last year or so at work with ABS faults, and both times they have had the wiring corrode inside the insulation. On a Doblo van I had to pull the loom from the rear sensor, all the way back to the connection at the A pillar (had hi-resistance in the rear loom from the connector) and take off all the insulation all the way along and check the wire. Someone else had fitted a sensor and it still had the same fault.
Once I'd taken the braiding and tape off to expose the wires themselves, I found a cut in the wire, about 12" from the rear sensor connection. It had gone green with corrosion and snapped in my fingers.
I think when the looms are made they are in a jig with 'claws' to locate the loom on the jig, when the loom is pulled about, it can nick the insulation, and even though it's all taped up, moisture gets in there eventually and corrodes the wires.
In my experience, if the sensor has failed it will bring the light on as soon as you drive it.
My advice would be to get the sensor loom checked properly before just banging a sensor on it.
Once I'd taken the braiding and tape off to expose the wires themselves, I found a cut in the wire, about 12" from the rear sensor connection. It had gone green with corrosion and snapped in my fingers.
I think when the looms are made they are in a jig with 'claws' to locate the loom on the jig, when the loom is pulled about, it can nick the insulation, and even though it's all taped up, moisture gets in there eventually and corrodes the wires.
In my experience, if the sensor has failed it will bring the light on as soon as you drive it.
My advice would be to get the sensor loom checked properly before just banging a sensor on it.
Last edited by GVK.; Mar 11, 2012 at 03:54 PM.
Thread Starter
Too many posts.. I need a life!!
Joined: Jun 2005
Posts: 945
Likes: 0
I have done a couple of Fiats in the last year or so at work with ABS faults, and both times they have had the wiring corrode inside the insulation. On a Doblo van I had to pull the loom from the rear sensor, all the way back to the connection at the A pillar (had hi-resistance in the rear loom from the connector) and take off all the insulation all the way along and check the wire. Someone else had fitted a sensor and it still had the same fault.
Once I'd taken the braiding and tape off to expose the wires themselves, I found a cut in the wire, about 12" from the rear sensor connection. It had gone green with corrosion and snapped in my fingers.
I think when the looms are made they are in a jig with 'claws' to locate the loom on the jig, when the loom is pulled about, it can nick the insulation, and even though it's all taped up, moisture gets in there eventually and corrodes the wires.
In my experience, if the sensor has failed it will bring the light on as soon as you drive it.
My advice would be to get the sensor loom checked properly before just banging a sensor on it.
Once I'd taken the braiding and tape off to expose the wires themselves, I found a cut in the wire, about 12" from the rear sensor connection. It had gone green with corrosion and snapped in my fingers.
I think when the looms are made they are in a jig with 'claws' to locate the loom on the jig, when the loom is pulled about, it can nick the insulation, and even though it's all taped up, moisture gets in there eventually and corrodes the wires.
In my experience, if the sensor has failed it will bring the light on as soon as you drive it.
My advice would be to get the sensor loom checked properly before just banging a sensor on it.
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