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![INFINITI FX35 2008 Service Manual
DTC P1564 ICC STEERING SWITCHEC-457
< SERVICE INFORMATION > [VQ35DE]
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1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and groun INFINITI FX35 2008 Service Manual
DTC P1564 ICC STEERING SWITCHEC-457
< SERVICE INFORMATION > [VQ35DE]
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1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and groun](/manual-img/42/57017/w960_57017-1696.png)
DTC P1564 ICC STEERING SWITCHEC-457
< SERVICE INFORMATION > [VQ35DE]
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1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with press- ing each button.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
3.CHECK ICC STEERING SWITCH GRO UND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect combination switch harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between combinati on switch terminal 15 and ECM terminal 82.
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.
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 SI GNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 99 and combination switch terminal 14. Refer to Wiring Diagram.
2. Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
DISTANCE switch DIST SW Pressed ON
Released OFF
Switch Monitor item Condition Indication
Switch Condition Voltage [V]
MAIN switch Pressed Approx. 0
Released Approx. 4.3
CANCEL switch Pressed Approx. 1.3
Released Approx. 4.3
RESUME/ACCELER-
ATE switch Pressed Approx. 3.7
Released Approx. 4.3
SET/COAST switch Pressed Approx. 3.0
Released Approx. 4.3
DISTANCE switch Pressed Approx. 2.2
Released Approx. 4.3
PBIB0311E
Continuity should exist.
Continuity should exist.
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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Page 1698 of 3924
![INFINITI FX35 2008 Service Manual
EC-458
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ICC STEERING SWITCH
NG >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
Combination switch (spiral cable)
Harness for open and short INFINITI FX35 2008 Service Manual
EC-458
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ICC STEERING SWITCH
NG >> GO TO 6.
6.DETECT MALFUNCTIONING PART
Check the following.
Combination switch (spiral cable)
Harness for open and short](/manual-img/42/57017/w960_57017-1697.png)
EC-458
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ICC STEERING SWITCH
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-458, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace ICC steering switch.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
>> INSPECTION END
Component InspectionINFOID:0000000001326319
ICC STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M203.
2. Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 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
PBIB1621E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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![INFINITI FX35 2008 Service Manual
DTC P1564 ASCD STEERING SWITCHEC-459
< SERVICE INFORMATION > [VQ35DE]
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DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000001326320
ASCD steering switch INFINITI FX35 2008 Service Manual
DTC P1564 ASCD STEERING SWITCHEC-459
< SERVICE INFORMATION > [VQ35DE]
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DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000001326320
ASCD steering switch](/manual-img/42/57017/w960_57017-1698.png)
DTC P1564 ASCD STEERING SWITCHEC-459
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DTC P1564 ASCD STEERING SWITCH
Component DescriptionINFOID:0000000001326320
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-37
for the ASCD function.
CONSULT-III Reference Val ue in Data Monitor ModeINFOID:0000000001326321
Specification data are reference values.
On Board Diagnosis LogicINFOID:0000000001326322
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.
Refer to EC-422
.
DTC Confirmation ProcedureINFOID:0000000001326323
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
1. Turn ignition switch ON and wait at lest 10 seconds.
2. Press MAIN switch for at least 10 seconds, then release it and wait at least 10 seconds.
3. Press RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 sec-
onds.
PBIB3255E
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 steer- ing switch is out of the specified range.
ECM detects that the ASCD steering switch is stuck
ON. Harness or connectors
(ASCD steering switch circuit is open or
shorted.)
ASCD steering switch
ECM
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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Page 1700 of 3924
EC-460
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
4. Press SET/COAST 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. Check DTC.
7. If DTC is detected, go to EC-461, "
Diagnosis Procedure".
Wiring DiagramINFOID:0000000001326324
TBWM0733E
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![INFINITI FX35 2008 Service Manual
DTC P1564 ASCD STEERING SWITCHEC-461
< SERVICE INFORMATION > [VQ35DE]
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Specification data are reference values
and are measured between each terminal and ground.
CAUTI INFINITI FX35 2008 Service Manual
DTC P1564 ASCD STEERING SWITCHEC-461
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Specification data are reference values
and are measured between each terminal and ground.
CAUTI](/manual-img/42/57017/w960_57017-1700.png)
DTC P1564 ASCD STEERING SWITCHEC-461
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Specification data are reference values
and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals wh en measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground ot her than ECM terminals, such as the ground.
Diagnosis ProcedureINFOID:0000000001326325
1.CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-144, "
Ground Inspection".
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”, “RESUME/A CC SW”, “SET SW” and “CANCEL 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
(ASCD steering switch) [Engine is running]
Warm-up condition
Idle speed Approximately 0V
99 G/Y ASCD steering switch [Ignition switch: ON]
ASCD steering switch: OFF
Approximately 4.0V
[Ignition switch: ON]
MAIN switch: Pressed Approximately 0V
[Ignition switch: ON]
CANCEL switch: Pressed Approximately 1.0V
[Ignition switch: ON]
RESUME/ACCELERATE switch: Pressed Approximately 3.0V
[Ignition switch: ON]
SET/COAST switch: Pressed Approximately 2.0V
PBIB2625E
Switch Monitor item Condition Indication
MAIN switch MAIN SW Pressed ON
Released OFF
CANCEL switch CANCEL SW Pressed ON
Released OFF
RESUME/ACCELER-
ATE switch RESUME/ACC SWPressed ON
Released OFF
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![INFINITI FX35 2008 Service Manual
EC-462
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with press- ing each button. INFINITI FX35 2008 Service Manual
EC-462
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with press- ing each button.](/manual-img/42/57017/w960_57017-1701.png)
EC-462
< SERVICE INFORMATION >[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Without CONSULT-III
1. Turn ignition switch ON.
2. Check voltage between ECM terminal 99 and ground with press- ing each button.
OK or NG
OK >> GO TO 8.
NG >> GO TO 3.
3.CHECK ASCD STEERING SWITCH GRO UND CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect combination switch harness connector.
3. Disconnect ECM harness connector.
4. Check harness continuity between combination switch terminal 15 and ECM terminal 82. 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.
Combination switch (spiral cable)
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to power in harness or connectors.
5.CHECK ASCD STEERING SWITCH INPUT SI GNAL CIRCUIT FOR OPEN AND SHORT
1. Check harness continuity between ECM terminal 99 and combination switch terminal 14. 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
SET/COAST switch SET SW Pressed ON
Released OFF
Switch Monitor item Condition Indication
Switch Condition Voltage [V]
MAIN switch Pressed Approx. 0
Released Approx. 4.0
CANCEL switch Pressed Approx. 1.0
Released Approx. 4.0
RESUME/ACCELERATE
switch Pressed Approx. 3.0
Released Approx. 4.0
SET/COAST switch Pressed Approx. 2.0
Released Approx. 4.0
PBIB0311E
Continuity should exist.
Continuity should exist.
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![INFINITI FX35 2008 Service Manual
DTC P1564 ASCD STEERING SWITCHEC-463
< SERVICE INFORMATION > [VQ35DE]
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Check the following.
Combination switch (spiral cable)
Harness for open and short between ECM INFINITI FX35 2008 Service Manual
DTC P1564 ASCD STEERING SWITCHEC-463
< SERVICE INFORMATION > [VQ35DE]
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Check the following.
Combination switch (spiral cable)
Harness for open and short between ECM](/manual-img/42/57017/w960_57017-1702.png)
DTC P1564 ASCD STEERING SWITCHEC-463
< SERVICE INFORMATION > [VQ35DE]
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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 ASCD STEERING SWITCH
Refer to EC-463, "
Component Inspection".
OK or NG
OK >> GO TO 8.
NG >> Replace ASCD steering switch.
8.CHECK INTERMITTENT INCIDENT
Refer to EC-139
.
>> INSPECTION END
Component InspectionINFOID:0000000001326326
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M203.
2. Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 with pushing each switch.
If NG, replace ASCD steering switch.
Switch Condition Resistance [ Ω]
MAIN switch Pressed Approx. 0
Released Approx. 4,000
CANCEL switch Pressed Approx. 250
Released Approx. 4,000
RESUME/ACCELERATE
switch Pressed Approx. 1,480
Released Approx. 4,000
SET/COAST switch Pressed Approx. 660
Released Approx. 4,000
PBIB1621E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
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![INFINITI FX35 2008 Service Manual
EC-464
< SERVICE INFORMATION >[VQ35DE]
DTC P1568 ICC FUNCTION
DTC P1568 ICC FUNCTION
On Board Diagn
osis LogicINFOID:0000000001326327
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001, first INFINITI FX35 2008 Service Manual
EC-464
< SERVICE INFORMATION >[VQ35DE]
DTC P1568 ICC FUNCTION
DTC P1568 ICC FUNCTION
On Board Diagn
osis LogicINFOID:0000000001326327
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001, first](/manual-img/42/57017/w960_57017-1703.png)
EC-464
< SERVICE INFORMATION >[VQ35DE]
DTC P1568 ICC FUNCTION
DTC P1568 ICC FUNCTION
On Board Diagn
osis LogicINFOID:0000000001326327
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-146
.
If DTC P1568 is displayed with DTC U1010, first pe rform the trouble diagnosis for DTC U1010. Refer
to EC-148
.
If DTC P1568 is displayed with DTC P0605, first pe rform the trouble diagnosis for DTC P0605. Refer
to EC-422
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this self-diagnosis.
DTC Confirmation ProcedureINFOID:0000000001326328
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conduc ted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
Step 4 may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a road
test is expected to be easier, it is unnecessary to lift the vehicle.
1. Turn ignition switch ON.
2. Press MAIN switch on ICC steering switch.
3. Drive the vehicle at more than 40 km/h (25 MPH).
4. Press SET/COAST switch.
5. Check DTC.
6. If DTC is detected, go to EC-464, "
Diagnosis Procedure".
Diagnosis ProcedureINFOID:0000000001326329
1.REPLACE ICC UNIT
1. Replace ICC unit.
2. Perform ACS-11
.
3. Check DTC of ICC unit. Refer to ACS-35
.
>> INSPECTION END
DTC No. Trouble Diagnosis
Name DTC Detecting Condit
ion Possible Cause
P1568
1568 ICC function ECM detects a difference between signals
from ICC unit is out of specified range. Harness or connectors
(CAN communication line is open or shorted.)
ICC unit
ECM
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