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Abs warning light stays on , vauxhall astra 1.6 converible

Hi there , my 2002 vauxhall astra 1.6 convertible ABS warning light stays on , how do i find out wote is the faulty part

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

ginko
  • 19396 Answers

SOURCE: ABS WARNING LIGHT ON VOLVO V70 1997

ABS light comes on with ignition then should go off when you start the car.
If abs sensor does not turn off after disconnecting the battery, then there is a real problem, a faulty sensor or ABS malfunctioning.
When the ABS led comes on immediately after you start the car and stays on usually is one of the relays.
The main one is called surge arrester relay, if it is faulty usually there have been an overvoltage.
There should be two more, usually located behind the black plastic cover of the ABS.
Testing and changing the faulty relay can fix the problem.

If light turns off on startup, and comes back on when you reach some speed, usually you need to check the wheel sensors. You test them unplugging the sensor located behind the wheel and testing it for continuity with a multimeter.
Use Haynes manual to find locations and specs of relays.
Contact a qualified mechanic if you cannot fix it yourself, problems with ABS may compromise safety of the vehicle.

Posted on Jul 15, 2008

  • 62 Answers

SOURCE: 2002 Mazda Protege ABS & Brake light

It is most likely caused by one of the ABS wheel speed sensors, those little cylindrical nipples on the back of your rotors with the cable attached to them. One way to confirm it is to read out the OBD2 codes for the ABS system, but there are some checks you can do. Visually check all four cables and sensors , and make sure there is no build up on the sensors. Make sure that the connector they plug into has good connections. Look at the wheel speed sensor and make sure the gap between the sensor head and the sprocket is the same on all four wheels (should be no more than a mm). Disconnect the wheel speed sensor cable and use an ohm-meter to check the resistance of all four sensors (they should all be similar, but don't remember the value exactly). There is a way to just disable the ABS by pulling out the 60A fuse, but if you do that you may have to plug in a code reader and use a grounding jumper on the ABS electical access box (don't remember which pin) to reset the ABS faults, otherwise you won't be able to drive around like that because your engine rpm at high speeds will behave erratically. Also, do not drive around without fixing this problem or bypassing ABS completely because it could get you into an accident. My ABS problem was intermittent, and the ABS would sometimes kick in on completely dry pavement as soon as I touched the break pedal, it almost caused me to rear-end a car on couple of occasions.

Posted on Jul 30, 2008

  • 1 Answer

SOURCE: ABS, ESP, Level warning lights (2004 Allroad TDI)

I had the brake light switch replaced by a local dealer. Cost was $140 and it fixed the problem. Have driven the car for two weeks since and no lights and all systems normal.

Posted on Oct 15, 2008

emissionwiz
  • 75197 Answers

SOURCE: abs warning light stays on no problems with brakes

The brakes will feel fine until u need the ABS, when the light is on the ABS is disabled. You need to have the ABS system tested for trouble codes, if the light is on there will be a code or codes.

Posted on Nov 14, 2008

Hentie
  • 18 Answers

SOURCE: after replacing the left front wheel bearing on a 2003 ford focus, the abs and traction warning light stay on

The bearings on the wheels has to be installed one way only, the rotor ring is built into the bearing and if installed the wrong way round the sensor cant pick up the wheel speed causing the ligt to be switched on in the cluster. The diagnostic equipment should pick this up as a fault once the car has been driven, it will see the sensor when you do the diagnostic if the car is standing still but once the car is moving and no signal is send from that wheel it would register a fault into the memory of the PCM that you would be able to retrieve later.
There is a way for you to test the sensor yourself by using a multimeter set on volts, you jack the vehicle up at that wheel, install a vehicle stand to support the vehicle to be safe, disconect the wheel speed sensor and probe the two wires into the sensor, spin the wheel by hand and a small amount of current will be produced meaning the the sensor is working and the wheel bearing is installed the correct way, you can also do a continuaty test on the sensor by switching the multimeter onto ohms, but be very carefull, if this sensor has three wires you cant do the continuaty test because of the integrated circuit in the sensor, the three wire sensors opperate on a voltage from 5Volt and it would be destroyed by the multimeter opperating on 9Volt.
If the continuaty test passes and the bearing is installed the correct way, the most comon fault would be a break in the wiring leading to the PCM
Hope this will be helpfull.

Posted on May 04, 2009

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Thanks.

Feb 04, 2013 | Cars & Trucks

1 Answer

Why is my abs warning light stoppinng on


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Finding the fault code will not clear the problem if you reset the system without finding the cause the light will just come on again or the fault code will not clear.
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Its probably just an abs sensor failed but its better to be safe than sorry.
Sorry for the lecture but I wouldnt like to see anyone hurt due to brake system failure.

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