Infiniti FX35 / FX45. Manual — part 573
DTC P1564 ASCD STEERING SWITCH
EC-1053
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DTC P1564 ASCD STEERING SWITCH
Component Description
INFOID:0000000001326925
ASCD steering switch has variant values of electrical resistance for each button. ECM reads voltage variation
of switch, and determines which button is operated.
CONSULT-III Reference Value in Data Monitor Mode
INFOID:0000000001326926
Specification data are reference values.
On Board Diagnosis Logic
INFOID:0000000001326927
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
.
1.
ASCD steering switch
2.
MAIN switch
3.
DISTANCE switch
(ICC models only)
4.
CANCEL switch
5.
SET/COAST switch
6.
RESUME/ACCELERATE switch
PBIB3241E
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: Re-
leased
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 steer-
ing 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
EC-1054
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DTC P1564 ASCD STEERING SWITCH
DTC Confirmation Procedure
INFOID:0000000001326928
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 and wait at least 10 seconds.
2.
Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3.
Press CANCEL switch for at least 10 seconds, then release it and wait at least 10 seconds.
4.
Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
5.
Press SET/COAST switch for at least 10 seconds, then release it and wait at least 10 seconds.
6.
Check DTC.
7.
If DTC is detected, go to
EC-1056, "Diagnosis Procedure"
.
DTC P1564 ASCD STEERING SWITCH
EC-1055
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Wiring Diagram
INFOID:0000000001326929
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
TBWM0725E
EC-1056
< SERVICE INFORMATION >
[VK45DE]
DTC P1564 ASCD STEERING SWITCH
Diagnosis Procedure
INFOID:0000000001326930
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten three ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with
CONSULT-III.
3.
Check each item indication under the following conditions.
TER-
MI-
NAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
82
B/W
Sensor ground
[Engine is running]
• Warm-up condition
• Idle speed
Approximately 0V
99
G/Y
ASCD steering switch
[Ignition switch: ON]
• ASCD steering switch: OFF
Approximately 4V
[Ignition switch: ON]
• MAIN switch: Pressed
Approximately 0V
[Ignition switch: ON]
• CANCEL switch: Pressed
Approximately 1V
[Ignition switch: ON]
• RESUME/ACCELERATE switch: Pressed
Approximately 3V
[Ignition switch: ON]
• SET/COAST switch: Pressed
Approximately 2V
PBIB2195E
Switch Monitor
item
Condition
Indication
MAIN switch
MAIN SW
Pressed
ON
Released
OFF
CANCEL switch
CANCEL SW
Pressed
ON
Released
OFF
RESUME/ACCEL-
ERATE switch
RESUME/ACC SW
Pressed
ON
Released
OFF
SET/COAST switch
SET SW
Pressed
ON
Released
OFF
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