2005 NISSAN X-TRAIL Service Repair Manual

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Page 793 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
EC-389
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Wiring DiagramEBS01FAF
TBWA0756E

Page 794 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-390
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DTC P1572 ASCD BRAKE SWITCH

Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measu

Page 795 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
EC-391
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2. CHECK OVERALL FUNCTION-II
With CONSULT-II
1. Select “BRAKE SW2” in “DATA MONITOR” mode with CONSULT-II.

Page 796 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-392
[QR (WITH EURO-OBD)]
DTC P1572 ASCD BRAKE SWITCH

4. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
10A fuse
Harness for open or short between ASCD brake swit

Page 797 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
EC-393
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9. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect ECM ha

Page 798 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-394
[QR (WITH EURO-OBD)]
DTC P1572 ASCD BRAKE SWITCH

12. DETECT MALFUNCTIONING PART
Check the following.
Fuse block (J/B) connector M2
15A fuse
Harness for open or short between stop lamp swit

Page 799 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
EC-395
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Component InspectionEBS01FAI
ASCD BRAKE SWITCH
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch harness

Page 800 of 4555

NISSAN X-TRAIL 2005 Service Repair Manual EC-396
[QR (WITH EURO-OBD)]
DTC P1574 ASCD VEHICLE SPEED SENSOR

DTC P1574 ASCD VEHICLE SPEED SENSORPFP:31036
System DescriptionEBS01FF7
ECM receives two vehicle speed sensor signals via CAN communic

EC-396
[QR (WITH EURO-OBD)]
DTC P1574 ASCD VEHICLE SPEED SENSOR

DTC P1574 ASCD VEHICLE SPEED SENSORPFP:31036
System DescriptionEBS01FF7
ECM receives two vehicle speed sensor signals via CAN communication line. One is sent from ESP/TCS/ABS
control unit (models with ESP) or “ABS actuator and electric unit (control unit)”(models without ESP), and the
other is from TCM (Transmission control module).
The ECM uses these signals for ASCD control. Refer to EC-529, "
AUTOMATIC SPEED CONTROL DEVICE
(ASCD)" for ASCD functions.
On Board Diagnosis LogicEBS01FAK
This self-diagnosis has the one trip detection logic.
The MI will not light up for this diagnosis.
NOTE:
If DTC P1574 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-133, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to EC-276, "
DTC P0500 VSS" .
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to EC-283, "
DTC P0605 ECM" .
DTC Confirmation ProcedureEBS01FAL
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.
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P1574
1574ASCD 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)
Harness or connectors
(Revolution sensor circuit is open or shorted)
Harness or connectors
(Wheel sensor circuit is open or shorted.)
TCM
ESP/TCS/ABS control unit (models with ESP)
“ABS actuator and electric unit (control unit)”
(models without ESP)
Combination meter
Wheel sensor
Revolution sensor
ECM

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