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Brake Pedal Travel Sensor

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Old Aug 20th, 2019, 19:26   #11
BlueRubber
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more vida info
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File Type: jpg 941F code.JPG (163.5 KB, 7 views)
File Type: jpg 9400 code.JPG (172.2 KB, 6 views)
File Type: jpg info.JPG (164.3 KB, 8 views)
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Old Aug 22nd, 2019, 22:17   #12
Brendan W
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How are the brake lights behaving?
Hadn't noticed your last post...

Page 15 of 31
ECM- 941F
Brake pedal sensor faulty
signal.
(5 cylinder non- turbo)
This DTC is to detect discr
epancies between the brake pedal
sensor and the brake light switch.
If, for more than
0.32 seconds,
the pedal sensor indicates that
the pedal is pressed beyond a
pre determined limit, but the brake light switch is not active, the
fault is set and the DTC ECM-941F is posted in the ECM.
If the DTC is posted the brake
pedal position value and the brake
light switch should be compared
to make sure that the pedal
sensor changes with pedal travel
and that the switch also goes
on and off with pedal travel. If
the switch and sensor behave
correctly, download the latest ETS software.
Downloading the latest ETS soft
ware increases the detection
capability of this monitor. As
before detecting faults for brake
light switch coming on, but now also checking that it goes off
when the position sensor indicates the pedal is released. The
detection time has been increased to 2 seconds and the number
of detections during a driving cycle is now 30. Brake lamp
operation should be verified after repair/software.
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Last edited by Brendan W; Aug 22nd, 2019 at 22:23.
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Old Aug 23rd, 2019, 14:16   #13
BlueRubber
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I tested the brake light switch and that seemed to work flawlessly.
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Old Sep 2nd, 2019, 15:15   #14
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Update:

Replaced the brake pedal pressure sensor with a new one: #31687032
This is not the same part number as my old sensor, but my local dealer said this is the correct part.

It didn't require much force to push in the new sensor, but the large metal circlip that holds the sensor in place was a bit fiddly.
Thankfully another Volvo driver helped me with this.

It works fine and fixed the fault.
Cruise control is working fine now and no errors relating to brakes in VIDA.

Thanks for the help all.
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Last edited by BlueRubber; Sep 2nd, 2019 at 15:17. Reason: typo fix
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Old Sep 10th, 2019, 20:06   #15
dannyspeed
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Quote:
Originally Posted by BlueRubber View Post
Update:

Replaced the brake pedal pressure sensor with a new one: #31687032
This is not the same part number as my old sensor, but my local dealer said this is the correct part.

It didn't require much force to push in the new sensor, but the large metal circlip that holds the sensor in place was a bit fiddly.
Thankfully another Volvo driver helped me with this.

It works fine and fixed the fault.
Cruise control is working fine now and no errors relating to brakes in VIDA.

Thanks for the help all.
Im getting the same problem on my XC90. Once you removed and replaced the sensor did you have to bleed the brake system?
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Old Sep 11th, 2019, 13:38   #16
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Quote:
Originally Posted by dannyspeed View Post
Im getting the same problem on my XC90. Once you removed and replaced the sensor did you have to bleed the brake system?
No need to bleed the system afterwards.
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