P1564

DTC P1564 ASCD STEERING SWITCH




Component 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:

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 self-diagnosis.

NOTE: If DTC P1564 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.

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 "CRUISE" switch for at least 10 seconds, then release it and wait at least 10 seconds.
5. Press "ACCEL/RES" 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 1st trip 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 Step 1 - 2:

Diagnostic Procedure Step 3 - 7:

Diagnostic Procedure

Component Inspection

ASCD STEERING SWITCH




1. Disconnect ASCD steering switch.







2. Check continuity between ASCD steering switch terminals 1 and 2 with pushing each switch.