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V70 Petrol Manual 2.4T 2000 - Yaw sensor/ABS fault reading 15v!?

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Old Jul 3, 2021 | 05:34 AM
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Stoatallyawesome's Avatar
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Default V70 Petrol Manual 2.4T 2000 - Yaw sensor/ABS fault reading 15v!?

Has anyone had any experience with DSTC warning lamp lit due to yaw rate/lateral sensor AND/OR ABS unit fault?

My V70 Petrol Manual 2.4T 2000 has failed MOT due to an DSTC error.

Initial error reading shows faulty yaw rate sensor.
This car has 2 yaw rate sensors and 1 lateral accelerometer.

Yaw rate sensors have been replaced with reconditioned units and that removed the yaw rate error.
Now the ABS unit is reporting an incorrect voltage of 15 volts!

The ABS unit was removed and reconditioned 2 years ago due to the ABS warning light lit on the dash. ABS unit was found to be fine during this process - was refitted and the ABS error persisted. (Fault was eventually traced by the mechanic unplugging every sensor he could find and then plugging them in one by one. Found ABS fault was being triggered by a faulty brake fluid fill level sensor.)

So now the ABS unit is reporting an incorrect voltage - should I have the unit reconditioned again?

Has anyone had any experience of chasing down these yaw rate/ABS errors?

Thanks!
 
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Old Jul 3, 2021 | 07:44 PM
  #2  
ssicarman's Avatar
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From: Western Canada
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Originally Posted by Stoatallyawesome
Has anyone had any experience with DSTC warning lamp lit due to yaw rate/lateral sensor AND/OR ABS unit fault?

My V70 Petrol Manual 2.4T 2000 has failed MOT due to an DSTC error.

Initial error reading shows faulty yaw rate sensor.
This car has 2 yaw rate sensors and 1 lateral accelerometer.

Yaw rate sensors have been replaced with reconditioned units and that removed the yaw rate error.
Now the ABS unit is reporting an incorrect voltage of 15 volts!

The ABS unit was removed and reconditioned 2 years ago due to the ABS warning light lit on the dash. ABS unit was found to be fine during this process - was refitted and the ABS error persisted. (Fault was eventually traced by the mechanic unplugging every sensor he could find and then plugging them in one by one. Found ABS fault was being triggered by a faulty brake fluid fill level sensor.)

So now the ABS unit is reporting an incorrect voltage - should I have the unit reconditioned again?

Has anyone had any experience of chasing down these yaw rate/ABS errors?

Thanks!
15 volts car running?
Is the voltage at the battery 15V or something else?
15V at the power wire for the ABS?
 
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Old Jul 4, 2021 | 04:11 AM
  #3  
Stoatallyawesome's Avatar
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Hi, the 15 volts is not measured voltage but what is being reported to the diagnostics.

This is visible on the diagnostic screen when the car is not running.

The car is in the garage at the moment and the mechanics have never seen this before. A 12v battery can't deliver 15v?
So it must be reporting incorrectly? Which sensor could report this error? Could it be within the ABS unit itself or elsewhere?

It seems there is an electronic/reporting/sensor error somewhere but in the circular complexities of the ABS/DSTC system, it proving very hard to find a linear fault finding path.

Any suggestions or questions you have will be most helpful, thank you
 
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