General Category > ABS related issues

Front Sensor Issue

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cbonnemayer:
Hi all,

I have the following problem on my '10 F650GS twin. After driving a few km's the abs light goes on and stays on. It will only go off after switching the ignition off, wait for a few minutes and restart the engine again. But the error returns again after some km's. GS911 says error 25380 and 25381. I've checked the clearance of the front wheel sensor and it's within specs.  The sensorring looks straight. I've also checked the wiring to the sensor, no dents or cuts. Could it be a faulty sensor? Anyone any suggestions?

Regards, Charlie

AutoScan Report
GS-911 version: 1503.1 Datapack version: 2.0 Serial Number: GS70383106 Registered to: Charlie Bonnemayer
Date: 14-3-2015 Time: 16:23:35

Motorcycle Information

 
VIN: WB1021801AZT43933
Mileage: 23162.0 km
Cluster date: 14 maart 2015
Next service date: 18 november 2015
Next service distance: 32901 km
Factory I-Level: K024-09-08-500
Actual I-Level: Not set

BMS-KP2
BMS type: BMS-KP2
Part No.: 7722567
Hardware Index: C6
Coding Index: 02
Manufacture Date (YY/MM/DD): 2010-01-11
MCV: 0.6.0
FSV: 0.77.35
OSV: 2.3.1
Manufacturer: Bosch
HWOE No.: 26895343
Program status: 350I
Date release: GE13
Factory I-Level: K024-09-08-500
Actual I-Level: Not set
VIN model year: 2010



No fault codes found

ZFE-Basic
ZFE type: ZFE-Basic
Factory I-Level: K024-09-08-500
Actual I-Level: Not set
Part No.: 7708590
Hardware Index: C8
Coding Index: 09
Manufacture Date (YY/MM/DD): 2004-03-01
MCV: 0.6.0
FSV: 2.5.0
OSV: 3.3.0
Manufacturer: Loewe Lear
HWOE No.: 26849063
Factory I-Level: K024-09-08-500
Actual I-Level: Not set
   Speed sensor manufacturer is Bosch 
   Speed sensor type is DF11i 
   ABS fitted 
   Heated grips 
   Outside temperature sensor 
   Lever type fuel sensor 
   Manual low beam off switch 
   Brake light type is LED 
   Rear light type is LED 
   Increased power output for low beam 
   Storage of temperature indication when engine hot 



No fault codes found

Tyre Pressure TPM
RDC/DWA type: Tyre Pressure TPM
Part No.: 7720236
Hardware Index: C4
Coding Index: 4
Manufacturer: Schrader
HWOE No.: 26925879
MCV: 0.6.0
FSV: 2.0.0
OSV: 4.0.2



No fault codes found

CAN-Kombi-K7
Cluster type: CAN-Kombi-K7
Part No.: 7713637
Hardware Index: C3
Coding Index: 01
Manufacturer: Preh
Manufacture Date (YY/MM/DD): 2010-01-15
MCV: 0.6.0
FSV: 2.2.1
OSV: 3.3.30
HWOE No.: 26806527
Assembly No.: 7713638
Factory I-Level: K024-09-08-500
Actual I-Level: Not set



No fault codes found

ABS8M
Part No.: 7711209
HW Version No.: 1
Coding Index: 0
Manufacturing Date: 2007-01-15
HWOE No.: 26868959
Manufacturer: Bosch
MCV: 0.5.9
FSV: 2.3.0
OSV: 3.4.32
Variant: K72 650 cc/K70




2 fault codes found:

25380 Front wheel speed sensor: Signal implausible
The fault is not present now.
25381 Front wheel speed sensor: Sensor clearance incorrect
The fault is not present now.
 


 

WayneC:
Sounds like either a faulty sensor or a poor connection in the wiring harness

cbonnemayer:
Hi,

I've spent the weekend searching for the problem causing this fault and finally I've found it. It appears the front axle was not tightened up to torque (should be 30 Nm) and the pinch bold was not tightened at all (should be 19 Nm). Because of this the front wheel had about 3 mm play, causing the abs sensor clearance incorrect error. It also explains why the bike was a bit wobbly at 170 km/h.

Regards,

Charlie


 

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