Nissan Murano Z50 (2005 year). Manual — part 114
DTC P1564 ASCD STEERING SWITCH
EC-579
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Revision: 2005 August
2005 Murano
Wiring Diagram
ABS004M8
TBWB0283E
EC-580
DTC P1564 ASCD STEERING SWITCH
Revision: 2005 August
2005 Murano
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
ABS004M9
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
67
B
Sensor ground
[Engine is running]
●
Warm-up condition
●
Idle speed
Approximately 0V
99
G/Y
ASCD steering switch
[Ignition switch: ON]
●
ASCD steering switch: OFF
Approximately 4V
[Ignition switch: ON]
●
MAIN switch: Pressed
Approximately 0V
[Ignition switch: ON]
●
CANCEL switch: Pressed
Approximately 1V
[Ignition switch: ON]
●
RESUME/ACCELERATE switch: Pressed
Approximately 3V
[Ignition switch: ON]
●
SET/COAST switch: Pressed
Approximately 2V
PBIB1835E
DTC P1564 ASCD STEERING SWITCH
EC-581
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Revision: 2005 August
2005 Murano
2.
CHECK ASCD STEERING SWITCH CIRCUIT
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “MAIN SW”, “CANCEL SW”, “RESUME/ACC SW” and “SET SW” in “DATA MONITOR” mode with
CONSULT-II.
3.
Check each item indication under the following conditions.
Without CONSULT-II
1.
Turn ignition switch ON.
2.
Check voltage between ECM terminal 99 and ground with press-
ing each button.
OK or NG
OK
>> GO TO 8.
NG
>> GO TO 3.
3.
CHECK ASCD STEERING SWITCH GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Disconnect combination switch harness connector M203.
4.
Check harness continuity between combination switch terminal
14 and ECM terminal 67. Refer to Wiring Diagram.
5.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
Switch Monitor
item
Condition
Indication
MAIN switch
MAIN SW
Pressed
ON
Released
OFF
CANCEL switch
CANCEL SW
Pressed
ON
Released
OFF
RESUME/ACCELER-
ATE switch
RESUME/ACC SW
Pressed
ON
Released
OFF
SET/COAST switch
SET SW
Pressed
ON
Released
OFF
Switch
Condition
Voltage [V]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4
CANCEL switch
Pressed
Approx. 1
Released
Approx. 4
RESUME/ACCELERATE
switch
Pressed
Approx. 3
Released
Approx. 4
SET/COAST switch
Pressed
Approx. 2
Released
Approx. 4
SEC006D
PBIB0311E
Continuity should exist.
PBIB1367E
EC-582
DTC P1564 ASCD STEERING SWITCH
Revision: 2005 August
2005 Murano
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M82, F102
●
Combination switch (spiral cable)
●
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to power in harness or connectors.
5.
CHECK ASCD STEERING SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Check harness continuity between ECM terminal 99 and combination switch terminal 15.
Refer to Wiring Diagram.
2.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Combination switch (spiral cable)
●
Harness for open and short between ECM and combination switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK ASCD STEERING SWITCH
Refer to
EC-583, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace steering wheel.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Continuity should exist.
DTC P1564 ASCD STEERING SWITCH
EC-583
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Revision: 2005 August
2005 Murano
Component Inspection
ABS004MA
ASCD STEERING SWITCH
1.
Disconnect combination switch (spiral cable).
2.
Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 with pushing each switch.
Switch
Condition
Resistance [
Ω
]
MAIN switch
Pressed
Approx. 0
Released
Approx. 4,000
CANCEL switch
Pressed
Approx. 250
Released
Approx. 4,000
RESUME/ACCELERATE
switch
Pressed
Approx. 1,480
Released
Approx. 4,000
SET/COAST switch
Pressed
Approx. 660
Released
Approx. 4,000
PBIB0967E
EC-584
DTC P1572 ASCD BRAKE SWITCH
Revision: 2005 August
2005 Murano
DTC P1572 ASCD BRAKE SWITCH
PFP:25320
Component Description
ABS004MB
When the brake pedal is depressed, ASCD 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
EC-28, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for the ASCD function.
CONSULT-II Reference Value in Data Monitor Mode
ABS004VL
Specification data are reference values.
On Board Diagnosis Logic
ABS004MD
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
.
●
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.
PBIB1368E
MONITOR ITEM
CONDITION
SPECIFICATION
BRAKE SW1
(ASCD brake switch)
●
Ignition switch: ON
Brake pedal: Fully released
ON
Brake pedal: Slightly depressed
OFF
BRAKE SW2
(stop lamp switch)
●
Ignition switch: ON
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition
Possible Cause
P1572
1572
ASCD brake switch
A)
When the vehicle speed is above 30 km/h
(19 MPH), ON signals from the stop lamp
switch and the ASCD brake switch are
sent to the ECM at the same time.
●
Harness or connectors
(The stop lamp switch circuit is shorted.)
●
Harness or connectors
(The ASCD brake switch circuit is shorted.)
●
Stop lamp switch
●
ASCD brake switch
●
Incorrect stop lamp switch installation
●
Incorrect ASCD brake switch installation
●
ECM
B)
ASCD brake switch signal is not sent to
ECM for extremely long time while the
vehicle is driving
DTC P1572 ASCD BRAKE SWITCH
EC-585
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Revision: 2005 August
2005 Murano
DTC Confirmation Procedure
ABS004ME
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.
●
Procedure for malfunction B is not described here. It takes extremely long time to complete procedure for
malfunction B. By performing procedure for malfunction A, the incident that causes malfunction B can be
detected.
WITH CONSULT-II
TESTING CONDITION:
Steps 4 and 5 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.
1.
Start engine (VDC switch OFF).
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Press MAIN switch and make sure that CRUISE indicator lights
up.
4.
Drive the vehicle for at least 5 consecutive seconds under the
following condition.
If 1st trip DTC is detected, go to
EC-587, "Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to the following step.
5.
Drive the vehicle for at least 5 consecutive seconds under the following condition.
6.
If 1st trip DTC is detected, go to
EC-587, "Diagnostic Procedure"
WITH GST
Follow the procedure “WITH CONSULT-II” above.
VHCL SPEED SE
More than 30 km/h (19 MPH)
Shift lever
Suitable position
PBIB2386E
VHCL SPEED SE
More than 30 km/h (19 MPH)
Shift lever
Suitable position
Driving location
Depress the brake pedal for more than
five seconds so as not to come off from
the above-mentioned vehicle speed.
EC-586
DTC P1572 ASCD BRAKE SWITCH
Revision: 2005 August
2005 Murano
Wiring Diagram
ABS004VM
TBWB0284E
DTC P1572 ASCD BRAKE SWITCH
EC-587
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Revision: 2005 August
2005 Murano
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
ABS004MG
1.
CHECK OVERALL FUNCTION-I
With CONSULT-II
1.
Turn ignition switch ON.
2.
Select “BRAKE SW1” in “DATA MONITOR” mode with CONSULT-II.
3.
Check “BRAKE SW1” indication under the following conditions.
Without CONSULT-II
1.
Turn ignition switch ON.
2.
Check voltage between ECM terminal 108 and ground under the
following conditions.
OK or NG
OK
>> GO TO 2.
NG
>> GO TO 3.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
101
R/G
Stop lamp switch
[Ignition switch: OFF]
●
Brake pedal: Fully released
Approximately 0V
[Ignition switch: OFF]
●
Brake pedal: Depressed
BATTERY VOLTAGE
(11 - 14V)
108
L/B
ASCD brake switch
[Ignition switch: ON]
●
Brake pedal: Depressed
Approximately 0V
[Ignition switch: ON]
●
Brake pedal: Fully released
BATTERY VOLTAGE
(11 - 14V)
CONDITION
INDICATION
Brake pedal: Slightly depressed
OFF
Brake pedal: Fully released
ON
SEC011D
CONDITION
VOLTAGE
Brake pedal: Slightly depressed
Approximately 0V
Brake pedal: Fully released
Battery voltage
MBIB0061E
EC-588
DTC P1572 ASCD BRAKE SWITCH
Revision: 2005 August
2005 Murano
2.
CHECK OVERALL FUNCTION-II
With CONSULT-II
Check “BRAKE SW2” indication in “DATA MONITOR” mode.
Without CONSULT-II
Check voltage between ECM terminal 101 and ground under the following conditions.
OK or NG
OK
>> GO TO 13.
NG
>> GO TO 8.
3.
CHECK ASCD BRAKE SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
3.
Turn ignition switch ON.
4.
Check voltage between ASCD brake switch terminal 1 and
ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
CONDITION
INDICATION
Brake pedal: Fully released
OFF
Brake pedal: Slightly depressed
ON
CONDITION
VOLTAGE
Brake pedal: Fully released
Approximately 0V
Brake pedal: Slightly depressed
Battery voltage
MBIB0060E
PBIB1368E
Voltage: Battery voltage
PBIB0857E
DTC P1572 ASCD BRAKE SWITCH
EC-589
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Revision: 2005 August
2005 Murano
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Fuse block (J/B) connector E101
●
10A fuse
●
Harness for open or short between ASCD brake switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK ASCD BRAKE SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 108 and ASCD brake switch terminal 2.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E109, M6
●
Harness for open or short between ECM and ASCD brake switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
7.
CHECK ASCD BRAKE SWITCH
Refer to
EC-591, "Component Inspection"
OK or NG
OK
>> GO TO 13.
NG
>> Replace ASCD brake switch.
Continuity should exist.
EC-590
DTC P1572 ASCD BRAKE SWITCH
Revision: 2005 August
2005 Murano
8.
CHECK STOP LAMP SWITCH POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check voltage between stop lamp switch terminal 1 and ground
with CONSULT -II or tester.
OK or NG
OK
>> GO TO 10.
NG
>> GO TO 9.
9.
DETECT MALFUNCTIONING PART
Check the following.
●
Fuse block (J/B) connector E101
●
10A fuse
●
Harness for open or short between stop lamp switch and fuse
>> Repair open circuit or short to ground or short to power in harness or connectors.
10.
CHECK STOP LAMP SWITCH INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT
1.
Disconnect ECM harness connector.
2.
Check harness continuity between ECM terminal 101 and stop lamp switch terminal 2.
Refer to Wiring Diagram.
3.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 12.
NG
>> GO TO 11.
11.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E110, M7
●
Harness for open or short between ECM and stop lamp switch
>> Repair open circuit or short to ground or short to power in harness or connectors.
PBIB1368E
Voltage: Battery voltage
PBIB0117E
Continuity should exist.
DTC P1572 ASCD BRAKE SWITCH
EC-591
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Revision: 2005 August
2005 Murano
12.
CHECK STOP LAMP SWITCH
Refer to
EC-591, "Component Inspection"
OK or NG
OK
>> GO TO 13.
NG
>> Replace stop lamp switch.
13.
CHECK INTERMITTENT INCIDENT
Refer to
EC-157, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Component Inspection
ABS004MH
ASCD BRAKE SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect ASCD brake switch harness connector.
3.
Check continuity between ASCD brake switch terminals 1 and 2
under the following conditions.
If NG, adjust ASCD brake switch installation, refer to
STOP LAMP SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect stop lamp switch harness connector.
3.
Check continuity between stop lamp switch terminals 1 and 2
under the following conditions.
If NG, adjust stop lamp switch installation, refer to
Condition
Continuity
Brake pedal: Fully released
Should exist
Brake pedal: Slightly depressed
Should not exist
SEC023D
Condition
Continuity
Brake pedal: Fully released
Should not exist
Brake pedal: Slightly depressed
Should exist
PBIB0118E
EC-592
DTC P1574 ASCD VEHICLE SPEED SENSOR
Revision: 2005 August
2005 Murano
DTC P1574 ASCD VEHICLE SPEED SENSOR
PFP:31036
Component Description
ABS004MI
The ECM receives two vehicle speed sensor 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 ASCD control. Refer to
EC-28, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"
for ASCD functions.
On Board Diagnosis Logic
ABS004MJ
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 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to
EC-167, "DTC U1000, U1001 CAN COMMUNICATION LINE"
.
●
If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to
●
If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to
DTC Confirmation Procedure
ABS004MK
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 (25 MPH).
4.
If DTC is detected, go to
EC-593, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.
Trouble Diagnosis
Name
DTC Detecting Condition
Possible Cause
P1574
1574
ASCD 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
SEF058Y
DTC P1574 ASCD VEHICLE SPEED SENSOR
EC-593
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Revision: 2005 August
2005 Murano
Diagnostic Procedure
ABS004ML
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
(models with VDC) or
(mod-
els without VDC).
OK or NG
OK
>> GO TO 3.
NG
>> Repair or replace.
3.
CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to
>> INSPECTION END
EC-594
DTC P1700 CVT CONTROL SYSTEM
Revision: 2005 August
2005 Murano
DTC P1700 CVT CONTROL SYSTEM
PFP:31036
Description
ABS007ZM
This DTC is displayed with other DTC regarding TCM. Perform the trouble diagnosis for displayed other DTC.
Refer to
When this DTC is detected, the ASCD control is canceled.
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