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EC-782
[QR (WITHOUT EURO-OBD)]
DTC P1564 ASCD STEERING SWITCH
DTC P1564 ASCD STEERING SWITCH PFP:25551
Component Description BBS001RB
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 EC-971, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)" for the ASCD function.
CONSULT-II Reference Value in Data Monitor Mode BBS001RC
Specification data are reference values.
On Board Diagnosis Logic BBS001RD
This self-diagnosis has the one trip detection logic.
The MI 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 EC-718, "
DTC P0605 ECM".
1. ASCD steering switch 2. RESUME/ACCELERATE switch 3. CANCEL switch
4. SET/COAST switch 5. MAIN switch
PBIB2877E
MONITOR ITEM CONDITION SPECIFICATION
MAIN SW
● Ignition switch: ON
MAIN switch: Pressed ON
MAIN switch: Released OFF
CANCEL SW
● Ignition switch: ON
CANCEL switch: Pressed ON
CANCEL switch: Released OFF
RESUME/ACC SW
● Ignition switch: ON
RESUME/ACCELERATE switch:
Pressed
ON
RESUME/ACCELERATE switch:
Released
OFF
SET SW
● Ignition switch: ON
SET/COAST switch: Pressed ON
SET/COAST switch: Released OFF
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition Possible Cause
P1564
1564
ASCD steering
switch
● An excessively high voltage signal from the ASCD
steering switch is sent to ECM.
● ECM detects that input signal from the ASCD
steering switch is out of the specified range.
● ECM detects that the ASCD steering switch is
stuck ON.
● Harness or connectors
(The switch circuit is open or shorted.)
● ASCD steering switch
● ECM
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