C1122: How to diagnose a power steering control module

[@abdalgadermohamed5636]

Hello, I would like to thank you for sharing this valuable information. regarding the vehicle speed sensor signal in this case. For further clarification, can I take a wire with the signal from the brake control (ABS/ESP) directly to the power steering control (EPS)? In this case, will the signal reach the steering control, and will there be any issues with the communication process? Just to confirm.

[@autofokusDanmark]

I will anwser you question later today!😄

[@autofokusDanmark]

The speed signal from the ECU to the EPS is a PWM-signal, basicly a "fake" speed signal. The ECU recieves a CAN-BUS speed signal from the ABS-control unit, which get the speed signal from a hall sensor (ABS sensor). This means that the signal not nessesarely are the same, even though I think the ECU pwm-signal copies the original speed signal. Nevertheless I can't confirm it, but give at go :)

[@abdalgadermohamed5636]

@@autofokusDanmark thank you

[@jamesbizelli8568]

Very good video you made this step by step easy to understand thank you

[@autofokusDanmark]

Thanks a lot for your comment, happy to help. /Simon☺️

[@marekgross-m4h]

Hvis begge computere viser både motor omdrejninger og hastíghed , hvad kan fejlen så være? Tak for ellers en god instruktion

[@autofokusDanmark]

@@marekgross-m4h så er det vel Power steering styreboksen, hvis signalet er til stede ved den. Tak for din ros😊. Hilsen Simon

[@ClausMeinertsen]

Hej Har en swift 2009 1,5. Hvor finder jeg modulerne bare for jeg ikke skal skille hele bilen. det er en fantastisk demonstration, tak.

[@autofokusDanmark]

Hejsa. Tak☺️. Du finder PS control modulet mellem de to forsæder foran gearstangen. I midterkonsollen på gulvet. Hilsen Simon

[@dondonshow-s8q]

so what the solution sir? I have a same brand car but not the sport version, and after scanning the ECU the computer show C1122 engine speed error

[@autofokusDanmark]

You need to check if the signal is at the power steering control module. You could also look at the live data in the module.

[@anurabandara8185]

Dear Sir . Why is it showing a wrong error code on scanner ?

[@autofokusDanmark]

@@anurabandara8185 what do you mean?

[@mads501010]

did you find out what was wrong with it? bad wire maybe?

[@autofokusDanmark]

@@mads501010 bad ECU 😂. The vehicle speed signal was not transmitted.

[@DigiparsehTheBestNewsfree]

thx alot bro

[@autofokusDanmark]

You are welcome👌