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ABS FAULT - Rover 75 Diesel

ABS FAULT - diagnostics returned fault as near side rear sensor, replaced and two days later light is on again, returned to garage and same fault code, replaced sensor, but ABS light did not extinguish this time, any ideas or solutions please, all gratefully accepted, than you.

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  • 2 Answers

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Posted on Jan 02, 2017

  • 580 Answers

SOURCE: bmw 520i 1999 abs/asc lights on diagnostic

Check to see if your brake pads and rotors are in good condition. Or if you have replaced the pads yourself and have not reset the wheel sensors this would cause the ABS Antilock Brake System light and the ASC Automatic Stability Control light to stay on as the ASC uses the ABS brakes with computer assistance to control the car

Posted on Jul 08, 2009

  • 2418 Answers

SOURCE: abs and engine fault light

If they are checking the system at the ECU and its telling them the sensors are bad, then you have a broken harness down stream of the ABS ECU. There has to be a brake in the harness to the rear wheel sensor(s). It is a brake in the harness or the end plug is not making good contact with the sensor contacts. Hope this helps.

Posted on Feb 23, 2011

alicantecoli
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SOURCE: rover 75 no speedo and abs light on intermittent

the speedo drive is on this wheel the sensor is on top of the diff output driveshaft ,test the abs sensor with a multimeter for continuety and the connector plug,does the roof vibrate on this one or did the robot work ok on that shift when it was built

Posted on Apr 25, 2012

  • 1832 Answers

SOURCE: after replacing my rear abs speed sensor, my abs light is still on.. i'm on rear discs

Any code that store into the computer need to be manually erase
by a scaner after the problem is fixed.


Mai

Posted on Mar 21, 2013

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Error logs are a great thing. They will help you find intermittent problems and start you off in a general direction of where a problem could be. There is a great level of detail on the justcommodores site on checking error codes logged by the engine management system, but this does not detail anything about the abs system. The abs warning light is not as common as the check engine warning light. Reading through the posts, I haven't found any detail on checking error codes logged by the abs system.

So here it is. For those of you familiar with checking the engine error codes, this procedure is so simple its not funny.

Basically, to check the engine error log, you bridge the 5th (ground) and 6th pins in the ODB connector under the steering wheel.

To check the ABS error log, using the same trusty calibrated paper clip, you simply bridge pins 5 and 12 of the connector.

To find pins 5 and 12, start at the top left hand corner. That is pin one. Going to the right, you count pin 2,3,4 etc. Once you get to the end, jump back to the start of the bottom left level of pins and keep counting. Pin 5 is about halfway along the top row, pin 12 is a little left of the middle in the bottom row.

Reading the error codes is the same procedure (counting the flashes), except now, the ABS light flashes (as opposed to the engine light when checking the engine codes).

The ABS log also uses code 12 firstly, with any errors logged shown after that. If no errors are logged, the 12 will flash again.

Error codes for the ABS error log (VR/VS) are as follows:

12 Diagnostic system operational
21 Right hand front wheel speed sensor fault
23 Right hand front wheel speed sensor continuity fault
25 Left hand front wheel speed sensor fault
27 Left hand front wheel speed sensor continuity fault
28 Wheel speed sensor frequency error
31 Right hand rear wheel speed sensor fault
33 Right hand rear wheel speed sensor continuity fault
35 Left hand rear wheel speed sensor fault
37 Left hand rear wheel speed sensor continuity fault
41 Right hand front inlet solenoid valve circuit fault
42 Right hand front outlet solenoid valve circuit fault
45 Left hand front inlet solenoid valve circuit fault
46 Left hand front outlet solenoid valve circuit fault
55 Rear inlet solenoid valve circuit fault
56 Rear outlet solenoid valve circuit fault
61 Pump motor relay circuit fault
63 Valve relay circuit fault
71 ABS control module internal fault

The above guide has been verified on a VR/VS. Checking the error log on all models prior to VR/VS is the same for the engine log, and I would assume that the same can be said for the ABS log, would be happy if someone could verify this for me.

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Mar 28, 2013 | 2000 Rover 75

1 Answer

Rover 75 no speedo and abs light on intermittent


the speedo drive is on this wheel the sensor is on top of the diff output driveshaft ,test the abs sensor with a multimeter for continuety and the connector plug,does the roof vibrate on this one or did the robot work ok on that shift when it was built

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Code Definition
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22 Right Front Toothed Wheel Frequency Error
25 Left Front Wheel Speed Sensor Fault
26 Left Front Toothed Wheel Frequency Error
31 Right Rear Wheel Speed Sensor Fault
32 Right Rear Toothed Wheel Frequency Error
35 Left Rear Wheel Speed Sensor Fault
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41 Right Front Solenoid Valve Fault
45 Left Front Solenoid Valve Fault
55 Rear Wheels Solenoid Valve Fault
61 Pump Motor or Motor Relay Fault
63 Solenoid Valve Relay Fault
71 Electronic Brake Control Module Fault
72 Serial Data Line Fault
75 Lateral Accelerometer Fault (Short ot Open)
76 Lateral Accelerometer Fault (Signal out of Range)

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Has nothing to do with yor abs the juddering was probably you driving over something which triggered the fault.
hope this helps

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