2007 INFINITI FX35 Service Manual

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Page 2593 of 4366

INFINITI FX35 2007 Service Manual DTC P1572 ASCD BRAKE SWITCH EC-1217
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Revision: 2006 July 2007 FX35/FX45
Wiring Diagram NBS004EL
TBWM1352E

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INFINITI FX35 2007 Service Manual EC-1218
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DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM gro

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INFINITI FX35 2007 Service Manual DTC P1572 ASCD BRAKE SWITCH EC-1219
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Revision: 2006 July 2007 FX35/FX45
2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication

Page 2596 of 4366

INFINITI FX35 2007 Service Manual EC-1220
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DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
3. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness c

Page 2597 of 4366

INFINITI FX35 2007 Service Manual DTC P1572 ASCD BRAKE SWITCH EC-1221
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Revision: 2006 July 2007 FX35/FX45
7. CHECK ASCD BRAKE SWITCH
Refer to EC-1222, "
Component Inspection"
OK or

Page 2598 of 4366

INFINITI FX35 2007 Service Manual EC-1222
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DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 July 2007 FX35/FX45
11 . DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E211, M41
Harness for open or short between

Page 2599 of 4366

INFINITI FX35 2007 Service Manual DTC P1574 ICC VEHICLE SPEED SENSOR EC-1223
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Revision: 2006 July 2007 FX35/FX45
DTC P1574 ICC VEHICLE SPEED SENSORPFP:31036
Component DescriptionNBS004EO

DTC P1574 ICC VEHICLE SPEED SENSOR EC-1223
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Revision: 2006 July 2007 FX35/FX45
DTC P1574 ICC VEHICLE SPEED SENSORPFP:31036
Component DescriptionNBS004EO
The ECM receives two vehicle speed signals via CAN communication line. One is sent from “unified meter and
A/C amp.”, and the other is from TCM (Transmission control module). The ECM uses these signals for ICC
control. Refer to ACS-6, "
DESCRIPTION" for ICC functions.
On Board Diagnosis LogicNBS004EP
This self-diagnosis has the one trip detection logic.
The MIL will not light up for this diagnosis.
NOTE:
If DTC P1574 is displayed with DTC U1000, U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-820, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC P1574 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-823, "
DTC U1010 CAN COMMUNICATION" .
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-1133, "
DTC P0500 VSS" .
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-1148, "
DTC P0605 ECM".
DTC Confirmation ProcedureNBS004EQ
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.
TESTING CONDITION:
Step 3 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. Start engine (VDC switch OFF).
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Drive the vehicle at more than 40 km/h (25MPH).
4. If DTC is detected, go to EC-1224, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis
name DTC detecting condition Possible cause
P1574
1574 ICC vehicle speed
sensor ECM detects a difference between two vehicle
speed signals is out of the specified range.
Harness or connectors
(The CAN communication line is open or
shorted.)
Unified meter and A/C amp.
ABS actuator and electric unit (control unit)
Wheel sensor
TCM
ECM
PBIB2673E

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INFINITI FX35 2007 Service Manual EC-1224
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DTC P1574 ICC VEHICLE SPEED SENSOR
Revision: 2006 July 2007 FX35/FX45
Diagnostic ProcedureNBS004ER
1. CHECK DTC WITH TCM
Check DTC with TCM. Refer to AT- 4 0 , "
ON BOARD DIAGNOST

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