P1564 Buick 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 Buick 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.
Buick Vehicle:Buick Regal – ?Buick Riviera – ?Buick LaCrosse – ?David Dunbar Buick – Buick Century – Buick LaCrosse – Buick LeSabre – Buick Lucerne – Buick Park Avenue – Buick Regal – Buick Verano – Buick Enclave – Buick Encore – Buick Rainier – Buick Rendezvous – Buick Terraza – Buick Riviera