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![INFINITI FX35 2006 Service Manual DTC P1564 ASCD STEERING SWITCH EC-521
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Revision: 2006 December 2006 FX35/FX45
DTC P1564 ASCD STEERING SWITCHPFP:25551
Component DescriptionNBS003X3
ASCD INFINITI FX35 2006 Service Manual DTC P1564 ASCD STEERING SWITCH EC-521
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Revision: 2006 December 2006 FX35/FX45
DTC P1564 ASCD STEERING SWITCHPFP:25551
Component DescriptionNBS003X3
ASCD](/manual-img/42/57019/w960_57019-1904.png)
DTC P1564 ASCD STEERING SWITCH EC-521
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Revision: 2006 December 2006 FX35/FX45
DTC P1564 ASCD STEERING SWITCHPFP:25551
Component DescriptionNBS003X3
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 ModeNBS003X4
Specification data are reference values.
On Board Diagnosis LogicNBS003X5
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 EC-481, "
DTC P0605 ECM".
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
steering 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
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EC-522
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
DTC Confirmation ProcedureNBS003X6
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 RESUME/ACCELERATE switch for at least 10 seconds, then release it and wait at least 10 seconds.
6. Press SET/COAST 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 DTC is detected, go to EC-524, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF058Y
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DTC P1564 ASCD STEERING SWITCH EC-523
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Revision: 2006 December 2006 FX35/FX45
Wiring DiagramNBS003X7
TBWM0733E
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![INFINITI FX35 2006 Service Manual EC-524
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DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use E INFINITI FX35 2006 Service Manual EC-524
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use E](/manual-img/42/57019/w960_57019-1907.png)
EC-524
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
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.
Diagnostic ProcedureNBS003X8
1. CHECK GROUND CONNECTIONS
1. Turn ignition switch OFF.
2. Loosen and retighten ground screw on the body. Refer to EC-154, "
Ground Inspection" .
OK or NG
OK >> GO TO 2.
NG >> Repair or replace ground connections.
TER-
MINAL 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
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![INFINITI FX35 2006 Service Manual DTC P1564 ASCD STEERING SWITCH EC-525
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Revision: 2006 December 2006 FX35/FX45
2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition s INFINITI FX35 2006 Service Manual DTC P1564 ASCD STEERING SWITCH EC-525
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Revision: 2006 December 2006 FX35/FX45
2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition s](/manual-img/42/57019/w960_57019-1908.png)
DTC P1564 ASCD STEERING SWITCH EC-525
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Revision: 2006 December 2006 FX35/FX45
2. CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1. Turn ignition switch ON.
2. Select “MAIN SW”, “RESUME/ACC SW”, “SET SW” and “CANCEL SW” in “DATA MONITOR” mode with CONSULT-II.
3. Check each item indication under the following conditions.
Without CONSULT-II
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 GROUND 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.
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 SW Pressed ON
Released OFF
SET/COAST switch SET SW Pressed ON
Released OFF
SEC006D
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.
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![INFINITI FX35 2006 Service Manual EC-526
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Combination switch (spiral cable)
Harness for open and short INFINITI FX35 2006 Service Manual EC-526
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
4. DETECT MALFUNCTIONING PART
Check the following.
Combination switch (spiral cable)
Harness for open and short](/manual-img/42/57019/w960_57019-1909.png)
EC-526
[VQ35DE]
DTC P1564 ASCD STEERING SWITCH
Revision: 2006 December 2006 FX35/FX45
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 SIGNAL 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
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-526, "
Component Inspection" .
OK or NG
OK >> GO TO 8.
NG >> Replace ASCD steering switch.
8. CHECK INTERMITTENT INCIDENT
Refer to EC-148, "
TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT" .
>> INSPECTION END
Component InspectionNBS003X9
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. Continuity should exist.
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
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DTC P1564 ASCD STEERING SWITCH EC-527
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Revision: 2006 December 2006 FX35/FX45
If NG, replace ASCD steering switch.
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![INFINITI FX35 2006 Service Manual EC-528
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DTC P1568 ICC FUNCTION
Revision: 2006 December 2006 FX35/FX45
DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS003XA
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001, INFINITI FX35 2006 Service Manual EC-528
[VQ35DE]
DTC P1568 ICC FUNCTION
Revision: 2006 December 2006 FX35/FX45
DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS003XA
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001,](/manual-img/42/57019/w960_57019-1911.png)
EC-528
[VQ35DE]
DTC P1568 ICC FUNCTION
Revision: 2006 December 2006 FX35/FX45
DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS003XA
NOTE:
If DTC P1568 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-156, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC P1568 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-159, "
DTC U1010 CAN COMMUNICATION" .
If DTC P1568 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-481, "
DTC P0605 ECM"
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this self-diagnosis.
DTC Confirmation ProcedureNBS003XB
CAUTION:
Always drive vehicle at a safe speed.
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.
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Press MAIN switch on ICC steering switch.
4. Drive the vehicle at more than 40 km/h (25 MPH).
5. Press SET/COAST switch.
6. If DTC is detected, go to EC-528, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
Diagnostic ProcedureNBS003XC
1. REPLACE ICC UNIT
1. Replace ICC unit.
2. Perform ACS-11, "
ACTION TEST" .
3. Check DTC of ICC unit. Refer to ACS-42, "
TROUBLE DIAGNOSIS FOR SELF-DIAGNOSTIC ITEMS" .
>> INSPECTION END
DTC No. Trouble Diagnosis
Name DTC Detecting Condition 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
PBIB2673E