2007 INFINITI FX35 Service Manual

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INFINITI FX35 2007 Service Manual DTC P1568 ICC FUNCTION EC-529
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Revision: 2006 July 2007 FX35/FX45
DTC P1568 ICC FUNCTIONPFP:18995
On Board Diagnosis LogicNBS003XA
NOTE:
If DTC P1568 i

DTC P1568 ICC FUNCTION EC-529
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Revision: 2006 July 2007 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-155, "
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-158, "
DTC U1010 CAN COMMUNICATION" .
If DTC P1568 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-480, "
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-529, "
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

Page 1906 of 4366

INFINITI FX35 2007 Service Manual EC-530
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
DTC P1572 ICC BRAKE SWITCHPFP:25320
Component DescriptionNBS003XD
When the brake pedal is depressed, ICC brake switch is t

EC-530
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
DTC P1572 ICC BRAKE SWITCHPFP:25320
Component DescriptionNBS003XD
When the brake pedal is depressed, ICC brake switch is turned OFF
and stop lamp switch is turned ON. ECM detects the state of the
brake pedal by this input of two kinds (ON/OFF signal).
Refer to ACS-6, "
DESCRIPTION" for the ICC function.
CONSULT-II Reference Value in Data Monitor ModeNBS003XE
Specification data are reference values.
On Board Diagnosis LogicNBS003XF
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this self-diagnosis.
NOTE:
If DTC P1572 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-480, "
DTC P0605 ECM"
This self-diagnosis has the one trip detection logic. When malfunction A is detected, DTC is not
stored in ECM memory. And in that case, 1st trip DTC and 1st trip freeze frame data are displayed.
1st trip DTC is erased when ignition switch OFF. And even when malfunction A is detected in two
consecutive trips, DTC is not stored in ECM memory.
PBIB1539E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ICC brake switch)
Ignition switch: ONBrake pedal: Fully released ON
Brake pedal: Slightly depressed OFF
BRAKE SW2
(Stop lamp switch)
Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No. Trouble Diagnosis
Name DTC Detecting Condition Possible Cause
P1572
1572 ICC brake switch A)
When the vehicle speed is above 30km/h
(19 MPH), ON signals from the stop lamp
switch and the ICC brake switch are sent to
ECM at the same time.
Harness or connectors
(Stop lamp switch circuit is shorted.)
Harness or connectors
(ICC brake switch circuit is shorted.)
Stop lamp switch
ICC brake switch
ICC brake hold relay
Incorrect stop lamp switch installation
Incorrect ICC brake switch installation
ECM
B)
ICC brake switch signal is not sent to ECM
for extremely long time while the vehicle is
driving

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INFINITI FX35 2007 Service Manual DTC P1572 ICC BRAKE SWITCH EC-531
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Revision: 2006 July 2007 FX35/FX45
DTC Confirmation ProcedureNBS003XG
CAUTION:
Always drive vehicle at a safe speed.

Page 1908 of 4366

INFINITI FX35 2007 Service Manual EC-532
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
Wiring Diagram NBS003XH
TBWM1401E

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INFINITI FX35 2007 Service Manual DTC P1572 ICC BRAKE SWITCH EC-533
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Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and

Page 1910 of 4366

INFINITI FX35 2007 Service Manual EC-534
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CO

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INFINITI FX35 2007 Service Manual DTC P1572 ICC BRAKE SWITCH EC-535
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Revision: 2006 July 2007 FX35/FX45
4. CHECK ICC BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ICC

Page 1912 of 4366

INFINITI FX35 2007 Service Manual EC-536
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
6. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector E201
10A fuse
Harness for open or short

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