2006 INFINITI M35 Factory Service Manual

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Page 2129 of 5621

INFINITI M35 2006 Factory Service Manual EC-586
[VQ35DE]
DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 January2006 M35/M45
DTC Confirmation ProcedureNBS0055A
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has

Page 2130 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ASCD BRAKE SWITCH
EC-587
[VQ35DE]
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Revision: 2006 January2006 M35/M45
Wiring Diagram NBS0055B
TBWT0983E

Page 2131 of 5621

INFINITI M35 2006 Factory Service Manual EC-588
[VQ35DE]
DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 January2006 M35/M45
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground

Page 2132 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ASCD BRAKE SWITCH
EC-589
[VQ35DE]
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Revision: 2006 January2006 M35/M45
2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONIT

Page 2133 of 5621

INFINITI M35 2006 Factory Service Manual EC-590
[VQ35DE]
DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 January2006 M35/M45
3. CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch (2) harness

Page 2134 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1572 ASCD BRAKE SWITCH
EC-591
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Revision: 2006 January2006 M35/M45
7. CHECK ASCD BRAKE SWITCH
Refer to EC-592, "
Component Inspection"
OK or NG
OK >> GO

Page 2135 of 5621

INFINITI M35 2006 Factory Service Manual EC-592
[VQ35DE]
DTC P1572 ASCD BRAKE SWITCH
Revision: 2006 January2006 M35/M45
11 . DETECT MALFUNCTIONING PART
Check the following.
Harness connectors E108, M15
Harness for open or short between ECM

Page 2136 of 5621

INFINITI M35 2006 Factory Service Manual DTC P1574 ICC VEHICLE SPEED SENSOR
EC-593
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Revision: 2006 January2006 M35/M45
DTC P1574 ICC VEHICLE SPEED SENSORPFP:31036
Component DescriptionNBS0055E
The ECM receiv

DTC P1574 ICC VEHICLE SPEED SENSOR
EC-593
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Revision: 2006 January2006 M35/M45
DTC P1574 ICC VEHICLE SPEED SENSORPFP:31036
Component DescriptionNBS0055E
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 LogicNBS0055F
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-173, "
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-176, "
DTC U1010 CAN COMMUNICATION" .
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-481, "
DTC P0500 VSS" .
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-496, "
DTC P0605 ECM".
DTC Confirmation ProcedureNBS0055G
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-594, "
Diagnostic Procedure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.Trouble diagnosis
nameDTC detecting condition Possible cause
P1574
1574ICC vehicle speed
sensorECM 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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