carlton_mad
3.0 CDX and now Diamond 3.0 24v
Administrator
Wanted: Life
Posts: 5216
dartford kent
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« Reply #25 on: October 30, 2011, 01:30:43 PM » |
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could aqlso be a goosed abs ecu andy ill dig one4 out and send it on!! if it works you can buy me a beer at the next meet!!
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what would life be like if we all drove fwd cars? feckin boring that's what rear drive or bust
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Einarrson
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« Reply #26 on: October 30, 2011, 02:28:12 PM » |
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Thanks CM... that would be an easy fix. Still got the rear sensors to check though.  |
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DKT1
Newbie
Posts: 7
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« Reply #27 on: October 30, 2011, 11:07:24 PM » |
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You have to check all the sensors first!(in my opinion)  before you can say whether it's the relay or not. Or you can change the sensor first and hope the new one is OK,but if it doesn't cure it you still don't know if it's the sensors or another dodgy relay? At least if you get good readings off the sensors you know what it isn't,and can move forward along the circuit. It only needs one to be faulty to stop the light going out. Sometimes the light goes out after the check,and as soon as you start to move it comes on and stays on as it's detected that one(or more) sensor is not pulsing.This is usually the crushed casing onto the winding senario,which is why you have to check the sensor wires to earth as you could still get a weak pulse from a shorted coil. Checking the voltages on the plug under the seat is the better/more positive way to check,as it shows up the earth short straight away. Keep at it you'll find it! |
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Carlton 2.0ltr Diamond Est
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nightmare
Sr. Member
Posts: 307
Location: Argyll Scotland
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« Reply #28 on: October 31, 2011, 09:16:21 PM » |
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For a tempory solution to the ABS problem you could wire the light up the oil pressure/alternator light.
As long as the MOT tester don't decide to test the brakes and see if they modulate (he only has to test by breaking hard  OFFICIALLY the MOT tester is NOT allowed to drive your vehicle. ABS only modulates at speeds of over 5-10mph, So how's he going to test it? Brake efficiency rollers only rotate at the equivalent of 2mph MAX. Got that from a friendly MOT inspector (my bro). NOT that I'm advocating that he does bodge them of course. |
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Easy going untill PUSHED!!!!
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carlton_mad
3.0 CDX and now Diamond 3.0 24v
Administrator
Wanted: Life
Posts: 5216
dartford kent
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« Reply #29 on: October 31, 2011, 09:38:30 PM » |
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If that is the case then am i to fail all 4x4's due to being unable to road test the brakes??
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what would life be like if we all drove fwd cars? feckin boring that's what rear drive or bust
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Einarrson
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« Reply #30 on: November 01, 2011, 11:57:28 AM » |
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OK the rear sensors are ok...
So, i'll try the relays again and what about checking for a short? Just check that there is continuity between one of the wires to the body?
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Einarrson
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« Reply #31 on: November 01, 2011, 12:44:13 PM » |
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Tried swaping the relays and the ones I had in are not the same number although the diagram and values on top are the same.
Handbrake seems ok, one of the return springs had come off the backplate and there's hardly any back plate let to attach it to.
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Einarrson
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« Reply #32 on: November 01, 2011, 05:44:25 PM » |
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Any chance you can send me a spare ECU CM?
Now the sensors are ok it's getting more likely.
If it doesn't fix it I'll hang onto it incase anyone else needs it in the future.
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Einarrson
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« Reply #33 on: November 02, 2011, 03:08:03 PM » |
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Just read that there is a 3rd relay somewhere... Where's that one then?
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Einarrson
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« Reply #34 on: November 02, 2011, 04:29:45 PM » |
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Well it seems to be sorted now. I did a bit more searching and someone was saying tap the relays with the engine running. That worked!
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Murph
Administrator
Wanted: Life
Posts: 6304
Location: Dartford (Kent)
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« Reply #35 on: November 02, 2011, 05:28:07 PM » |
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Nice!
For info though.
2 relays in the box by the ABS unit in the engine bay.
1 relay in the box behind the n/s turret.
ECU located under the passenger seat or in some early cars behind the passenger footwell kick panel.
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Einarrson
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« Reply #36 on: November 02, 2011, 09:26:34 PM » |
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Hmm... I was tapping the one behind the turret, I'm not aware of the other ones, I'll have a look.  |
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Einarrson
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« Reply #37 on: November 04, 2011, 01:19:56 PM » |
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Well driving round this morning on the way to the test station the light is coming back on. It does go out when you tap it but not anymore.
So tracking down a replacement JCT600 quoted me £72 and its got to be ordered from Germany but I did find out something useful. The relay in question can be found in Calibras 89-97 and Cavaliers 89-95 as well as Senators but not Omegas.
Off to Skipton now to get some pre owned replacements.
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Einarrson
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« Reply #38 on: November 05, 2011, 11:26:55 AM » |
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OK.... Passed this morning! So if anyone want's a surge arrestor relay I have a couple of spares (I got 3 of them just in case). Thanks very much for the help everyone  |
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nightmare
Sr. Member
Posts: 307
Location: Argyll Scotland
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« Reply #39 on: November 05, 2011, 12:35:27 PM » |
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If that is the case then am i to fail all 4x4's due to being unable to road test the brakes??
On this so called "Road test" what instrumentation is the tester using? |
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Easy going untill PUSHED!!!!
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melinx
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« Reply #40 on: November 05, 2011, 12:41:07 PM » |
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probably the surge arrestor relay if its on all the time!! the last 3 digits are 794
Nice one Mr. Mad |
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von-opel
Full Member
Posts: 240
"Broadsword calling danny boy"
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« Reply #41 on: November 05, 2011, 06:15:51 PM » |
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Usually a Tapley Meter  Stick one of these in the pass footwell.......get up to speed.... max brake application |
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