Garage Support

Back to Forum

Post a Response

Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Steve Shaw on February 2, 2016, 9:18 am

Year of Manufacture *: 2003

Tools used:
Snap on solus pro
pico
autel maxidas
teslite

Hi
we've got the above vehicle in with abs fault codes for both rear sensors poor connection
nothing happening when i scope the rears at either the controller or at the connector nearest the sensors
fronts are good as expected
we've load tested the wiring between the controller & the connectors nearest the rear sensors, minimal loss
so this leaves me with either both sensors dead (unlikely, but not impossible) or a controller fault. ad has no diagrams or component tests.

c1103 speed sensor rear left l6/3
c1104 speed sensor rear right l6/4

anyone had the same problem?

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Steve Shaw <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on February 2, 2016, 3:50 pm, in reply to "Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Steve Shaw

both rear sensors reading 5.8k ohms
front sensor that is ok is reading 5.68k ohmhs

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by aidan birley <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT2879' width='330' height='300' border=0 style='border:none;'> on February 2, 2016, 5:23 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Aidan Birley

Hi

Are these active or inductive sensors ?

I guess active in which case would / should not normally be tested with ohm meter in addition scope test it different for both types.

Cheers Aidan

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Steve Shaw <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on February 2, 2016, 5:37 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Steve Shaw

Hi Aidan
ye olde inductive sensors & i scoped them first, no signal though hence my first post, it just seems unlikely for both to die at the same time. however it is the first time we've seen this car & the owner has only just bought it.

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by aidan birley <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT2879' width='330' height='300' border=0 style='border:none;'> on February 2, 2016, 6:22 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Aidan Birley

Steve

If they are just inductive then they should produce a signal when disconnected from system,if they don't you need to sort that first.

Aidan

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by andyhyoung <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5148' width='330' height='300' border=0 style='border:none;'> on February 2, 2016, 7:21 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Andrew Young

Surely these are active hall effect sensors.An inductive sensor would read about 800-1.2k ohms.Does the abs light go out initially after start up and return on when car in motion?

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by steve shaw <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on February 3, 2016, 9:12 am, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Steve Shaw

Hi & thanks for the replies so far Aidan & Andy

they may be hall effect, the lights only go out if you clear the codes.
they come back on within about 25 yards in my car park with the same codes triggered.on live data they don't display any speed reading unlike both front ones.

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by andyhyoung <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5148' width='330' height='300' border=0 style='border:none;'> on February 3, 2016, 1:31 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Andrew Young

If the abs light only comes on after driving a short distance,then I would think it unlikely the sensors are at fault.I would be looking at a problem in the hub/bearing area.

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by aidan birley <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT2879' width='330' height='300' border=0 style='border:none;'> on February 3, 2016, 1:36 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"

Hi

Sound like they are active sensor, time for some research on operation and testing them.

Just be aware that it is common for the ECU to shut down the circuit if it is faulty ! this can me misleading if you are not expecting it

any evidence of recent work on sensors / hubs etc.

Cheers Aidan

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Steve Shaw <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on February 3, 2016, 5:48 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Steve Shaw

Hi
the rings are intact, not distorted & the airgap looks right, there's no play or noise from the bearings.
i've come across the abs ecu closing the circuit on a bmw before (which was the abs ecu at fault) this is why i checked the fronts with the scope & the base setting looked the same, but no signal coming from the rears at the first connection or the ecu.

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by andyhyoung <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT5148' width='330' height='300' border=0 style='border:none;'> on February 3, 2016, 8:53 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Andrew Young

Are these new sensors,and from where have they been purchased?

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Steve shaw <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on February 3, 2016, 10:30 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Steve Shaw

Hi
Nothing has been replaced by me or anyone else lately by the look of it

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Gary Sheriff <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat1802' width='330' height='300' border=0 style='border:none;'> on February 16, 2016, 1:20 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Gary Sheriff

We had one of these in a couple of years ago but forgive me for forgetting what the solution was, apart from it being brake master cylinder related. Spoke to our electrician and he`s the same, can`t remember fully what is was that cured it.

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Steve Shaw <iframe src='https://members4.boardhost.com/ukautotalk/info/user=ukat3627' width='330' height='300' border=0 style='border:none;'> on February 17, 2016, 6:15 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Steve Shaw

Hi Gary
thanks for the reply,it's away at ecu testing at mo. so we'll see what they have to say

Steve

Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #

Posted by Shaun Dale <iframe src='https://members4.boardhost.com/ukautotalk/info/user=UKAT2719' width='330' height='300' border=0 style='border:none;'> on February 24, 2016, 12:34 pm, in reply to "Re: Mercedes Benz SLK 230 kompressor 2003 - ABS fault, codes C1102 & c1103 #"
Shaun Dale

Hi Steve,
How did you get on with this one?
I know the post is getting a bit old now but I've only just seen it.
All of the active sensors I've had to test work in a current mode with them switching between 8 and 16mA. I usually disconnect them at the connector then put in one bridge wire and the the meter set to mA in the other wire. Take care not to get the polarity reversed at the sensor as it will die. You can if you wish put a resistor in series instead of the meter and put a 'scope across the resistor, if you used 10 Ohms the voltage should be 80/160mV.
Shaun.

« Back to index

[ Garage Support ]

Copyright © uk autotalk