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 "AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.
CONSULT-II Reference Value In Data Monitor Mode:
CONSULT-II Reference Value in Data Monitor Mode
On Board Diagnosis Logic
On Board Diagnosis Logic:
This self-diagnosis has the one trip detection logic. The MIL will not light up for this diagnosis.
NOTE: If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605. Refer to "DTC P0605 ECM".
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select "DATA MONITOR" mode with CONSULT-II.
3. Wait at least 10 seconds.
4. Press ON/OFF (MAIN) switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press ACCEL/RESUME switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Press COAST/SET switch for at least 10 seconds, then release it and wait at least 10 seconds.
7. Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
8. If DTC is detected, go to "Diagnostic Procedure" below.
WITH GST
Follow the procedure "WITH CONSULT-II" above.
EC-ASC/SW-01:
Wiring Diagram
Diagnostic Procedure (Steps 1 - 2):
Diagnostic Procedure (Steps 3 - 7):
Diagnostic Procedure
Component Inspection
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable).
2. Check continuity between combination switch (spiral cable) terminals 14 and 15 with pushing each switch.