2006 NISSAN VERSA Workshop Service Repair Manual

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Page 1641 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-472Revision: June 2006
DTC P1564 ASCD STEERING SWITCH
2007 Versa
Component InspectionUBS00QLL
ASCD STEERING SWITCH
1. Disconnect combination switch (spiral cable) harness connector M102.
2. Check c

Page 1642 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
EC-473
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DTC P1572 ASCD BRAKE SWITCHPFP:25320
Component DescriptionUBS00Q LM
When the brake pedal is depressed, ASCD b

DTC P1572 ASCD BRAKE SWITCH
EC-473
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DTC P1572 ASCD BRAKE SWITCHPFP:25320
Component DescriptionUBS00Q LM
When the brake pedal is depressed, ASCD brake switch (2) is
turned OFF and stop lamp switch (1) is turned ON. ECM detects the
state of the brake pedal by this input of two kinds (ON/OFF signal).
Refer to EC-28, "
AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for the ASCD function.
CONSULT-II Reference Value in Data Monitor ModeUBS00QLN
Specification data are reference values.
On Board Diagnosis LogicUBS00QLO
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-427, "
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.
BBIA0708E
MONITOR ITEM CONDITION SPECIFICATION
BRAKE SW1
(ASCD brake switch)
Ignition switch: ON
Brake pedal: Fully released (A/T, CVT)
Brake pedal and clutch pedal: Fully
released (M/T)ON
Brake pedal: Slightly depressed (A/T,
CVT)
Brake pedal and/or clutch pedal:
Slightly depressed (M/T)OFF
BRAKE SW2
(Stop lamp switch)
Ignition switch: ONBrake pedal: Fully released OFF
Brake pedal: Slightly depressed ON
DTC No.Trouble Diagnosis
NameDTC Detecting Condition Possible Cause
P1572
1572ASCD brake switchA)When the vehicle speed is above 30km/h
(19 MPH), ON signals from the stop lamp
switch and the ASCD brake switch are sent
to ECM at the same time.
Harness or connectors
(Stop lamp switch circuit is shorted.)
Harness or connectors
(ASCD brake switch circuit is shorted.)
Harness or connectors
(ASCD clutch switch circuit is shorted.)
(M/T)
Stop la m p s witch
ASCD brake switch
ASCD clutch switch (M/T)
Incorrect stop lamp switch installation
Incorrect ASCD brake switch installation
Incorrect ASCD clutch switch installation
(M/T)
ECM B)ASCD brake switch signal is not sent to
ECM for extremely long time while the vehi-
cle is driving

Page 1643 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-474Revision: June 2006
DTC P1572 ASCD BRAKE SWITCH
2007 Versa
DTC Confirmation ProcedureUBS00QLP
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previou

Page 1644 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
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Wiring Diagram UBS00QLQ
BBWA2665E

Page 1645 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-476Revision: June 2006
DTC P1572 ASCD BRAKE SWITCH
2007 Versa
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals whe

Page 1646 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
EC-477
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2. CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.

Page 1647 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual EC-478Revision: June 2006
DTC P1572 ASCD BRAKE SWITCH
2007 Versa
4. CHECK ASCD BRAKE SWITCH POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect ASCD brake switch (2) harness connector.
–Stop lam

Page 1648 of 2896

NISSAN VERSA 2006 Workshop Service Repair Manual DTC P1572 ASCD BRAKE SWITCH
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7. CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1. Turn ignition switch OFF.
2. Disconnect

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