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Keep getting mercedes left front abs sensor code.

Customer Question
Keep getting mercedes left front abs sensor code.
Submitted: 9 months ago.Category: Mercedes
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Answered in 5 minutes by:
9/19/2017
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago
Lou P. master tech
Lou P. master tech, Mercedes Technician
Category: Mercedes
Satisfied Customers: 6,016
Experience: 20 years Master Certified excellent fix rate and have access to factory wiring, and instructions.
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Hello, my name is***** and i will do my best to assist you.I am going over your story now and will reply back soon with some info,thanks!

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago

Can you give me the fault codes and also what you have done so far to try and correct the issue ?

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Customer reply replied 9 months ago
c003108 and already changed the abs sensor and hub assembly
Customer reply replied 9 months ago
also wheel speed for left front wheel comes up as 65483(a large number). Others wheels are being read fine.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago
Ok thanks , what are you using to read fault codes ? And where did you get the parts from ? Can I have your vin please ?
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Customer reply replied 9 months ago
i have maxisys pro. i have tried one used abs sensor and then I got a new one from rockauto WDDHF5KB2EA789109
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago
Ok thanks give me a few minutes
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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago

ok so with a voltmeter set to ac volts, test the signal at the speed sensor wiring when spinning the wheel and see if you get a voltage. lets start there.

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Customer reply replied 9 months ago
I hooked up the multimeter and set it to ac volts i do not see any changes. I tried the other wheel. I could not get anything there either. I am setting the ac volts on multimeter and then unpluging the abs sensor and connecting the pins from the multimeter to the pins in the sensor plug. Is that the correct way?
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago
Correct you are touching the wires on the sensor plug not the body harness
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Customer reply replied 9 months ago
I am getting nothing. Maybe this is active sensor. I read that active sensor does not send voltage.
Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago

ok let me check the wiring diagram so you can ohm the wiring from the sensor connection to the module, will that help?

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago

ok looks like it is just ohms we are looking for on the sensor side. here is the readings.

0.8-2.3 kOhm
Sine wave. Frequency varies with wheel speed

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 9 months ago

you can do a continuity test from the wheel speed connector to connector pins 8 and 19, the diagram is not consistent but check the pins from the connector in the wheel well to the module and you should have continuity on the same wiring.

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Mercedes Mechanic: Lou P. master tech, Mercedes Technician replied 8 months ago

are you still needing help?

Please let me know.

Lou

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