P1564
DTC P1564 ASCD STEERING SWITCHComponent Description
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation of switch, and determines which button is operated.
Refer to ASCD function.
CONSULT-III Reference Value in Data Monitor Mode
On Board Diagnosis Logic
DTC Confirmation Procedure
NOTE: If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at least 10 seconds before conducting the next test.
1. Turn ignition switch ON.
2. Wait at least 10 seconds.
3. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
4. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
7. Check DTC.
8. If DTC is detected, go to "Diagnostic Procedure" below.
Wiring Diagram
EC-ASC/SW-01:
Diagnostic Procedure
Step 1-2:
Step 2 (Continued)-6:
Step 7-8:
Component Inspection
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M78.
2. Check continuity between combination switch (spiral cable) terminals 16 and 20 with pushing each switch.
If NG, replace ASCD steering switch.