2006 INFINITI FX35 Service Manual

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INFINITI FX35 2006 Service Manual DTC P1572 ICC BRAKE SWITCH EC-529
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Revision: 2006 December 2006 FX35/FX45
DTC P1572 ICC BRAKE SWITCHPFP:25320
Component DescriptionNBS003XD
When the brak

DTC P1572 ICC BRAKE SWITCH EC-529
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Revision: 2006 December 2006 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 diagnosis.
NOTE:
If DTC P1572 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. 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

Page 1914 of 4462

INFINITI FX35 2006 Service Manual EC-530
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 December 2006 FX35/FX45
DTC Confirmation ProcedureNBS003XG
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedu

Page 1915 of 4462

INFINITI FX35 2006 Service Manual DTC P1572 ICC BRAKE SWITCH EC-531
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Revision: 2006 December 2006 FX35/FX45
Wiring Diagram NBS003XH
TBWM1401E

Page 1916 of 4462

INFINITI FX35 2006 Service Manual EC-532
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DTC P1572 ICC BRAKE 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 g

Page 1917 of 4462

INFINITI FX35 2006 Service Manual DTC P1572 ICC BRAKE SWITCH EC-533
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Revision: 2006 December 2006 FX35/FX45
2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indicatio

Page 1918 of 4462

INFINITI FX35 2006 Service Manual EC-534
[VQ35DE]
DTC P1572 ICC BRAKE SWITCH
Revision: 2006 December 2006 FX35/FX45
4. CHECK ICC BRAKE SWITCH CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ICC brake hold relay.
3. Turn ignition

Page 1919 of 4462

INFINITI FX35 2006 Service Manual DTC P1572 ICC BRAKE SWITCH EC-535
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Revision: 2006 December 2006 FX35/FX45
6. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector

Page 1920 of 4462

INFINITI FX35 2006 Service Manual EC-536
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DTC P1572 ICC BRAKE SWITCH
Revision: 2006 December 2006 FX35/FX45
12. CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect stop lamp switch harness

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