P1564 Volkswagen Cruise Control System – Vehicle Accel Too High
Possible causes
– ASCD Steering Switch harness is open or shorted
– ASCD Steering Switch circuit poor electrical connection
– Faulty ASCD Steering Switch
– Faulty Engine Control Module (ECM)
– ASCD Steering Switch circuit poor electrical connection
– Faulty ASCD Steering Switch
– Faulty Engine Control Module (ECM)
What about the obd code?
An improper voltage signal from the Automatic Speed Control Device (ASCD) steering switch is sent to Engine Control Module (ECM).
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
– Automatic Speed Control (Cruise Control) system may stop working
– Automatic Speed Control (Cruise Control) system may stop working
P1564 Volkswagen Description
Automatic Speed Control Device (ASCD) (Cruise Control) steering switch has variant values of electrical resistance for each button. The Engine Control Module (ECM) reads voltage variation
of switch, and determines which button is operated.
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