Peugeot 206 ABS (2004) model

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Peugeot 206 ABS (2004) model

Postby Technician » Fri Jun 02, 2017 11:18 pm

Just a query to see if any of you have seen this fault. ABS warning light illuminates at key on, the ABS system does not appear to do a self check, therefore the ABS light does not extinguish and then immediately illuminate to indicate a fault.

The ABS light illuminates constantly. A check of the wheel speed sensors (two wire) system, magnetic not active, does not record any speed signals from the rear wheels. Upon removal of the brake drums, somebody had replaced the wheel bearings on both sides, but the sensor rings had not been replaced on either rear brake drum.

I was always under the impression that when the ECU completes a self check, that the electrical circuit being OK, the warning light would extinguish and then once the wheels are turned, if a speed signal is missing, then a fault is detected and the warning light would then illuminate. Am I now to understand that if magnetism does not generate a voltage while the wheel is static that the ABS system will register a fault!

Thanks.
Technician
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Re: Peugeot 206 ABS (2004) model

Postby Dcunning35 » Sun Jun 04, 2017 6:48 pm

Not if the abs has logged dtc,s repeatedly , yes it can verify the circuit but until an "active" self test has passed the dtc will remain as a continuous dtc thus launching the warning lamp strategy.
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Re: Peugeot 206 ABS (2004) model

Postby Technician » Sun Jun 04, 2017 11:13 pm

Thanks Danny, so you are saying that until the fault code has been cleared the eml strategy will remain illuminated!
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Re: Peugeot 206 ABS (2004) model

Postby Dcunning35 » Sun Jun 04, 2017 11:35 pm

Yes I anticipate thats the logic behind the dtc
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