Infiniti M35/M45 Y50. Manual — part 521
![](/vehicles/zatt/cen/houeebante/hof.png)
DTC P1564 ICC STEERING SWITCH
EC-557
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
3.
CHECK ICC STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect combination switch harness connector M303.
4.
Check harness continuity between combination switch terminal 18 and ECM terminal 67.
Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
●
Combination switch (spiral cable)
●
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK ICC STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 99 and combination switch terminal 21.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Combination switch (spiral cable)
●
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK ICC STEERING SWITCH
Refer to
EC-558, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace ICC steering switch.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-153, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Continuity should exist.
Continuity should exist.
![](/vehicles/zatt/cen/houeebante/uthtusn.png)
EC-558
[VQ35DE]
DTC P1564 ICC STEERING SWITCH
Component Inspection
NBS0054P
ICC STEERING SWITCH
1.
Disconnect combination switch (spiral cable) harness connector M303.
2.
Check continuity between combination switch terminals 18 and
21 with pushing each switch.
If NG, replace ICC steering switch.
Switch
Condition
Resistance [
Ω
]
MAIN switch
Pressed
Approx. 0
Released
Approx. 5,500
CANCEL switch
Pressed
Approx. 310
Released
Approx. 5,500
RESUME/ACCELERATE
switch
Pressed
Approx. 2,600
Released
Approx. 5,500
SET/COAST switch
Pressed
Approx. 1,400
Released
Approx. 5,500
DISTANCE switch
Pressed
Approx. 740
Released
Approx. 5,500
PBIB2739E
![](/vehicles/zatt/cen/houeebante/morseveri.png)
DTC P1564 ASCD STEERING SWITCH
EC-559
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P1564 ASCD STEERING SWITCH
PFP:25551
Component Description
NBS0054Q
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-36, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for the ASCD function.
CONSULT-II Reference Value in Data Monitor Mode
NBS0054R
Specification data are reference values.
On Board Diagnosis Logic
NBS0054S
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.
RESUME/ACCELERATE switch
3.
SET/COAST switch
4.
CANCEL switch
5.
DISTANCE switch (Models with ICC) 6.
MAIN switch
PBIB2709E
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
![](/vehicles/zatt/cen/houeebante/utheetharosa.png)
EC-560
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
DTC Confirmation Procedure
NBS0054T
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 MAIN switch for at least 10 seconds, then release it and
wait at least 10 seconds.
5.
Press CANCEL switch for at least 10 seconds, then release it
and wait at least 10 seconds.
6.
Press RESUME/ACCELERATE switch for at least 10 seconds,
then release it and wait at least 10 seconds.
7.
Press SET/COAST switch for at least 10 seconds, then release
it and wait at least 10 seconds.
8.
If DTC is detected, go to
EC-562, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
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