Nissan Murano Z50 (2007 year). Manual - part 98

DTC P1564 ASCD STEERING SWITCH

EC-517

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 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

NBS003BA

1. 

CHECK GROUND CONNECTIONS

1.

Turn ignition switch OFF.

2.

Loosen and retighten two ground screws on the body.
Refer to 

EC-150, "Ground Inspection"

 .

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

EC-518

DTC P1564 ASCD STEERING SWITCH

Revision: 2006 July

2007 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.

DTC P1564 ASCD STEERING SWITCH

EC-519

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 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-520, "Component Inspection"

 .

OK or NG

OK

>> GO TO 8.

NG

>> Replace steering wheel.

8. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Continuity should exist.

EC-520

DTC P1564 ASCD STEERING SWITCH

Revision: 2006 July

2007 Murano

Component Inspection

NBS003BB

ASCD STEERING SWITCH

1.

Disconnect combination switch (spiral cable) harness connector M203.

2.

Check continuity between combination switch (spiral cable) ter-
minals 14 and 15 with pushing each switch.

If NG, replace ASCD steering 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

DTC P1572 ASCD BRAKE SWITCH

EC-521

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 Murano

DTC P1572 ASCD BRAKE SWITCH

PFP:25320

Component Description

NBS003BC

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-27, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

for the ASCD function.

CONSULT-II Reference Value in Data Monitor Mode

NBS003BD

Specification data are reference values.

On Board Diagnosis Logic

NBS003BE

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-482

 .

●

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

EC-522

DTC P1572 ASCD BRAKE SWITCH

Revision: 2006 July

2007 Murano

DTC Confirmation Procedure

NBS003BF

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-524, "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-524, "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.

DTC P1572 ASCD BRAKE SWITCH

EC-523

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 Murano

Wiring Diagram 

NBS003BG

TBWB0814E

EC-524

DTC P1572 ASCD BRAKE SWITCH

Revision: 2006 July

2007 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

NBS003BH

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: Slightly depressed

BATTERY VOLTAGE
(11 - 14V)

108

L/B

ASCD brake switch

[Ignition switch: ON]

●

Brake pedal: Slightly 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

DTC P1572 ASCD BRAKE SWITCH

EC-525

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 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

EC-526

DTC P1572 ASCD BRAKE SWITCH

Revision: 2006 July

2007 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-528, "Component Inspection"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Replace ASCD brake switch.

Continuity should exist.

DTC P1572 ASCD BRAKE SWITCH

EC-527

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 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 3 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 battery

>> 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 4.
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

PBIB2102E

Continuity should exist.

EC-528

DTC P1572 ASCD BRAKE SWITCH

Revision: 2006 July

2007 Murano

12. 

CHECK STOP LAMP SWITCH

Refer to 

EC-528, "Component Inspection"

 .

OK or NG

OK

>> GO TO 13.

NG

>> Replace stop lamp switch.

13. 

CHECK INTERMITTENT INCIDENT

Refer to 

EC-141, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

 .

>> INSPECTION END

Component Inspection

NBS003BI

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 

BR-7,

"BRAKE PEDAL"

 , and perform step 3 again.

STOP LAMP SWITCH

1.

Turn ignition switch OFF.

2.

Disconnect stop lamp switch harness connector.

3.

Check continuity between stop lamp switch terminals 3 and 4
under the following conditions.

If NG, adjust stop lamp switch installation, refer to 

BR-7,

"BRAKE PEDAL"

 , and perform step 3 again.

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

PBIB2103E

DTC P1574 ASCD VEHICLE SPEED SENSOR

EC-529

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 Murano

DTC P1574 ASCD VEHICLE SPEED SENSOR

PFP:31036

Component Description

NBS003BJ

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-27, "AUTOMATIC SPEED CONTROL DEVICE (ASCD)"

   for ASCD functions.

On Board Diagnosis Logic

NBS003BK

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-151, "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-154, "DTC U1010 CAN COMMUNICATION"

 .

●

If DTC P1574 is displayed with DTC P0500, first perform the trouble diagnosis for DTC P0500.
Refer to 

EC-467, "DTC P0500 VSS"

 .

●

If DTC P1574 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to 

EC-482, "DTC P0605 ECM"

 .

DTC Confirmation Procedure

NBS003BL

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-530, "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

PBIB2673E

EC-530

DTC P1574 ASCD VEHICLE SPEED SENSOR

Revision: 2006 July

2007 Murano

Diagnostic Procedure

NBS003BM

1. 

CHECK DTC WITH TCM

Check DTC with TCM. Refer to 

CVT-29

 .

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)”

Refer to 

BRC-51, "TROUBLE DIAGNOSIS"

  (models with VDC) or 

BRC-10, "TROUBLE DIAGNOSIS"

  (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 

DI-30, "SELF-DIAG RESULTS"

 .

>> INSPECTION END

DTC P1700 CVT CONTROL SYSTEM

EC-531

C

D

E

F

G

H

I

J

K

L

M

A

EC

Revision: 2006 July

2007 Murano

DTC P1700 CVT CONTROL SYSTEM

PFP:31036

Description

NBS003BN

This DTC is displayed with other DTC regarding TCM. Perform the trouble diagnosis for displayed other DTC.
Refer to 

CVT-33, "TROUBLE DIAGNOSIS"

  .

When this DTC is detected, the ASCD control is canceled.

EC-532

DTC P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)

Revision: 2006 July

2007 Murano

DTC P1715 INPUT SPEED SENSOR (PRIMARY SPEED SENSOR)

PFP:31935

Description

NBS003BV

ECM receives primary speed sensor signal from TCM through CAN communication line.

CONSULT-II Reference Value in Data Monitor Mode

NBS003BW

Specification data are reference values.

On Board Diagnosis Logic

NBS003BX

NOTE:

●

If DTC P1715 is displayed with DTC U1000 or U1001 first perform the trouble diagnosis for DTC
U1000, U1001. Refer to 

EC-151

 .

●

If DTC P1715 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to 

EC-154

 .

●

If DTC P1715 is displayed with DTC P0605, first perform the trouble diagnosis for DTC P0605.
Refer to 

EC-482

 .

●

If DTC P1715 is displayed with DTC P0335, first perform the trouble diagnosis for DTC P0335.
Refer to 

EC-362

 .

●

If DTC P1715 is displayed with DTC P0340, P0345, first perform the trouble diagnosis for DTC
P0340, P0345. Refer to 

EC-369

 .

The MIL will not light up for this diagnosis.

DTC Confirmation Procedure

NBS003BY

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.

 WITH CONSULT-II

1.

Turn ignition switch ON.

2.

Select “DATA MONITOR” mode with CONSULT-II.

3.

Start engine.

4.

Drive vehicle at a speed of  more than 50 km/h (31 MPH) for at
least 5 seconds.

5.

If 1st trip DTC is detected, go to 

EC-533, "Diagnostic Procedure"

.

 WITH GST

Follow the procedure “WITH CONSULT-II” above.

MONITOR ITEM

CONDITION

SPECIFICATION

I/P PULLY SPD

●

Vehicle speed: More than 20 km/h (12MPH)

Almost the same speed as the 
tachometer indication

DTC No.

Trouble diagnosis name

DTC detecting condition

Possible cause

P1715
1715

Input speed sensor
(Primary speed sensor)
(TCM output)

Primary speed sensor signal is different 
from the theoretical value calculated by 
ECM from secondary speed sensor sig-
nal and engine rpm signal.

●

Harness or connectors
(The CAN communication line is open or 
shorted)

●

Harness or connectors
(Primary speed sensor circuit is open or 
shorted)

●

TCM

PBIB2673E