Nissan Murano Z51 (2008 year). Manual — part 379
P0746 PRESSURE CONTROL SOLENOID A PERFORMANCE (LINE PRESSURE
SOLENOID VALVE)
TM-67
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3.
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace transaxle assembly. Refer to
3.
CHECK OUTPUT SPEED SENSOR (SECONDARY SPEED SENSOR) SYSTEM
Check output speed sensor (secondary speed sensor) system. Refer to
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK INPUT SPEED SENSOR (PRIMARY SPEED SENSOR) SYSTEM
Check input speed sensor (primary speed sensor) system. Refer to
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000003317807
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
2
3.0 – 9.0
Ω
Revision: 2008 October
2009 Murano
TM-68
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRES-
SURE SOLENOID VALVE)
Description
INFOID:0000000003317808
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure
to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
INFOID:0000000003317809
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Start engine and maintain the following conditions for at least 30 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0776 PRS CNT SOL/B FCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003317810
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-156, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-156, "Inspection and Judgment"
.
2.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
1.
Turn ignition switch OFF.
2.
Disconnect CVT unit connector.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0776
PRS CNT SOL/B FCTN
Secondary pressure is too high or too low
compared with the commanded value while
driving.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Pressure control solenoid valve B (sec-
ondary pressure solenoid valve system)
• Transmission fluid pressure sensor A
(secondary pressure sensor)
• Line pressure control system
ATF TEMP SEN
: 1.0
−
2.0 V
ACC PEDAL OPEN
: More than 1.0/8
RANGE
: “D” position
VEHICLE SPEED
: 10 km/h (6 MPH) or more
Driving location
: Driving the vehicle uphill (increased engine load) will help maintain the driving
conditions required for this test.
Revision: 2008 October
2009 Murano
P0776 PRESSURE CONTROL SOLENOID B PERFORMANCE (SEC PRESSURE
SOLENOID VALVE)
TM-69
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3.
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace transaxle assembly. Refer to
3.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace transaxle assembly. Refer to
4.
CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000003317811
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003317812
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
2
3.0 – 9.0
Ω
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
3
3.0 – 9.0
Ω
Revision: 2008 October
2009 Murano
TM-70
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE
SOLENOID VALVE)
P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRES-
SURE SOLENOID VALVE)
Description
INFOID:0000000003317813
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the oil pump discharge
pressure to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
INFOID:0000000003317814
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Start engine.
2.
Drive vehicle and maintain the following conditions for at least 5 consecutive seconds.
3.
Perform “Self Diagnostic Results” in “TRANSMISSION”.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0778 PRS CNT SOL/B CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003317815
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check resistance between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE B (SECONDARY
PRESSURE SOLENOID VALVE) (PART 1)
1.
Disconnect CVT unit connector.
2.
Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0778
PRS CNT SOL/B CIRC
• Normal voltage is not applied to solenoid
due to cut line, short, etc.
• TCM detects as irregular by comparing
target value with monitor value.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Pressure control solenoid valve B (sec-
ondary pressure solenoid valve)
TCM vehicle side harness connector
Ground
Resistance (Approx.)
Connector
Terminal
F23
39
3.0 – 9.0
Ω
Revision: 2008 October
2009 Murano
P0778 PRESSURE CONTROL SOLENOID B ELECTRICAL (SEC PRESSURE
SOLENOID VALVE)
TM-71
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK HARNESS BETWEEN TCM AND PRESSURE CONTROL SOLENOID VALVE B (SECONDARY
PRESSURE SOLENOID VALVE) (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace transaxle assembly. Refer to
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003317816
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
39
F24
3
Existed
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
39
Not existed
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
3
3.0 – 9.0
Ω
Revision: 2008 October
2009 Murano
TM-72
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-
SOR)
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE
SENSOR)
Description
INFOID:0000000003317821
The transmission fluid pressure sensor A (secondary pressure sensor) detects secondary pressure of CVT
and sends a signal to the TCM.
DTC Logic
INFOID:0000000003317822
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Make sure that output voltage of CVT fluid temperature sensor is within the range below.
4.
Start engine and wait for at least 5 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0840 TR PRS SENS/A CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003317823
1.
CHECK INPUT SIGNAL
1.
Start engine.
2.
Check voltage between TCM connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 2.
2.
CHECK POWER AND SENSOR GROUND
Check voltage between TCM terminals.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0840
TR PRS SENS/A CIRC
Signal voltage of the transmission fluid pres-
sure sensor A (secondary pressure sensor)
is too high or too low while driving.
• Harness or connectors
(Sensor circuit is open or shorted.)
• Transmission fluid pressure sensor A
(secondary pressure sensor)
ATF TEMP SEN
: 1.0 – 2.0 V
If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
TCM connector
Ground
Condition
Voltage (Approx.)
Connector
Terminal
F23
15
“N” position idle
1.0 – 1.5 V
Revision: 2008 October
2009 Murano
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-
SOR)
TM-73
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR A
(SECONDARY PRESSURE SENSOR)] (PART 1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit connector.
3.
Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR A
(SECONDARY PRESSURE SENSOR)] (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
5.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit connector.
3.
Check continuity between TCM vehicle side harness connector terminals and CVT unit vehicle side har-
ness connector terminals.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
2)
Check continuity between TCM vehicle side harness connector terminals and ground.
TCM connector
Voltage (Approx.)
Connector
Terminal
F23
25
26
4.75 – 5.25 V
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
15
F24
23
Existed
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
15
Not existed
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
25
F24
19
Existed
26
20
Revision: 2008 October
2009 Murano
TM-74
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0840 TRANSMISSION FLUID PRESSURE SENSOR A (SEC PRESSURE SEN-
SOR)
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
CHECK TCM
1.
Replace with the same type of TCM. Refer to
.
2.
Connect each connector.
3.
Perform “DTC CONFIRMATION PROCEDURE”. Refer to
.
Is “P0840 TR PRS SENS/A CIRC” detected?
YES
>> Replace transaxle assembly. Refer to
NO
8.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
25
Not existed
26
Revision: 2008 October
2009 Murano
P0841 PRESSURE SENSOR FUNCTION
TM-75
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P0841 PRESSURE SENSOR FUNCTION
Description
INFOID:0000000003317824
Using the engine load (throttle position), the primary pulley revolution speed, and the secondary pulley revolu-
tion speed as input signals, TCM changes the operating pressure of the primary pulley and the secondary pul-
ley and changes the groove width of the pulley to control the gear ratio.
DTC Logic
INFOID:0000000003317825
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Start engine and maintain the following conditions for at least 12 consecutive seconds.
Is “P0841 PRESS SEN/FNCTN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003317826
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-156, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> .GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-156, "Inspection and Judgment"
.
2.
CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK TRANSMISSION FLUID PRESSURE SENSOR B (PRIMARY PRESSURE SENSOR) SYSTEM
Check transmission fluid pressure sensor B (primary pressure sensor) system. Refer to
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0841
PRESS SEN/FNCTN
Correlation between the values of the trans-
mission fluid pressure sensor A (secondary
pressure sensor) and the transmission fluid
pressure sensor B (primary pressure sen-
sor) is out of specification.
• Harness or connectors
(Sensor circuit is open or shorted.)
• Transmission fluid pressure sensor A
(secondary pressure sensor)
• Transmission fluid pressure sensor B (pri-
mary pressure sensor)
VEHICLE SPEED
: 40 km/h (25 MPH) or more
RANGE
: “D” position
Revision: 2008 October
2009 Murano
TM-76
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0841 PRESSURE SENSOR FUNCTION
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
1.
Turn ignition switch OFF.
2.
Disconnect CVT unit connector.
3.
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK STEP MOTOR SYSTEM
Check step motor system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000003317827
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003317828
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
2
3.0 – 9.0
Ω
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
3
3.0 – 9.0
Ω
Revision: 2008 October
2009 Murano
P0841 PRESSURE SENSOR FUNCTION
TM-77
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Revision: 2008 October
2009 Murano
TM-78
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE
SENSOR)
Description
INFOID:0000000003317829
The transmission fluid pressure sensor B (primary pressure sensor) detects primary pressure of CVT and
sends a signal to the TCM.
DTC Logic
INFOID:0000000003317830
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Make sure that output voltage of line temperature sensor is within the range below.
4.
Start engine and wait for at least 5 consecutive seconds.
With GST
Follow the procedure “With CONSULT-III”.
Is “P0845 TR PRS SENS/B CIRC” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003317831
1.
CHECK INPUT SIGNAL
1.
Start engine.
2.
Check voltage between TCM connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 8.
NO
>> GO TO 2.
2.
CHECK SENSOR POWER AND SENSOR GROUND
Check voltage between TCM connector terminals.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0845
TR PRS SENS/B CIRC
Signal voltage of the transmission fluid pres-
sure sensor B (primary pressure sensor) is
too high or too low while driving.
• Harness or connectors
(Sensor circuit is open or shorted.)
• Transmission fluid pressure sensor B (pri-
mary pressure sensor)
ATF TEMP SEN
: 1.0 – 2.0 V
If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
TCM connector
Ground
Condition
Voltage (Approx.)
Connector
Terminal
F23
14
“N” position idle
0.5 – 0.8 V
Revision: 2008 October
2009 Murano
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
TM-79
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> GO TO 5.
3.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR B
(PRIMARY PRESSURE SENSOR)] (PART 1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit connector.
3.
Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminal.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK HARNESS BETWEEN TCM AND CVT UNIT [TRANSMISSION FLUID PRESSURE SENSOR B
(PRIMARY PRESSURE SENSOR)] (PART 2)
Check continuity between TCM vehicle side harness connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
5.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
1)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit connector.
3.
Check continuity between TCM vehicle side harness connector terminal and CVT unit vehicle side har-
ness connector terminals.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK HARNESS BETWEEN TCM AND CVT UNIT (SENSOR POWER AND SENSOR GROUND) (PART
2)
Check continuity between TCM vehicle side harness connector terminals and ground.
TCM connector
Voltage (Approx.)
Connector
Terminal
F23
25
26
4.75 – 5.25 V
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
14
F24
25
Existed
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
14
Not existed
TCM vehicle side harness connector
CVT unit vehicle side harness connector
Continuity
Connector
Terminal
Connector
Terminal
F23
25
F24
19
Existed
26
20
Revision: 2008 October
2009 Murano
TM-80
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
CHECK TCM
1.
Replace with the same type of TCM. Refer to
.
2.
Connect each connector.
3.
Perform “DTC CONFIRMATION PROCEDURE”. Refer to
.
Is “P0845 TR PRS SENS/B CIRC” detected?
YES
>> Replace transaxle assembly. Refer to
NO
8.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
TCM vehicle side harness connector
Ground
Continuity
Connector
Terminal
F23
25
Not existed
26
Revision: 2008 October
2009 Murano
P0868 SECONDARY PRESSURE DOWN
TM-81
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P0868 SECONDARY PRESSURE DOWN
Description
INFOID:0000000003317832
The pressure control solenoid valve B (secondary pressure solenoid valve) regulates the secondary pressure
to suit the driving condition in response to a signal sent from the TCM.
DTC Logic
INFOID:0000000003317833
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
Immediately after performing any “DTC CONFIRMATION PROCEDURE”, always turn ignition switch OFF.
Then wait at least 10 seconds before performing the next test.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “Data Monitor” in “TRANSMISSION”.
3.
Make sure that output voltage of CVT fluid temperature sensor is within the range below.
4.
Start engine and maintain the following conditions for at least 10 consecutive seconds.
Is “P0868 SEC/PRESS DOWN” detected?
YES
>> Go to
NO
>> Check intermittent incident. Refer to
GI-40, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000003317834
1.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
TM-156, "Inspection and Judgment"
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace damaged parts. Refer to
TM-156, "Inspection and Judgment"
.
2.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
1.
Turn ignition switch OFF.
2.
Disconnect CVT unit connector.
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0868
SEC/PRESS DOWN
Secondary fluid pressure is too low com-
pared with the commanded value while driv-
ing.
• Harness or connectors
(Solenoid circuit is open or shorted.)
• Pressure control solenoid valve B (sec-
ondary pressure solenoid valve) system
• Transmission fluid pressure sensor A
(secondary pressure sensor)
• Line pressure control system
ATF TEMP SEN
: 1.0 – 2.0 V
If it is out of range, drive the vehicle to decrease the voltage (warm up the fluid) or stop engine to increase the voltage
(cool down the fluid)
VEHICLE SPEED (accelerate slow-
ly)
: 0
→
50 km/h (31 MPH)
ACC PEDAL OPEN
: 0.5/8 – 1.0/8
RANGE
: “D” position
Revision: 2008 October
2009 Murano
TM-82
< COMPONENT DIAGNOSIS >
[CVT: RE0F09B]
P0868 SECONDARY PRESSURE DOWN
3.
Check pressure control solenoid valve B (secondary pressure solenoid valve). Refer to
nent Inspection [Pressure Control Solenoid Valve B (Secondary Pressure Solenoid Valve)]"
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check pressure control solenoid valve A (line pressure solenoid valve). Refer to
tion [Pressure Control Solenoid Valve A (Line Pressure Solenoid Valve)]"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK TRANSMISSION FLUID PRESSURE SENSOR A (SECONDARY PRESSURE SENSOR) SYS-
TEM
Check transmission fluid pressure sensor A (secondary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
DETECT MALFUNCTIONING ITEMS
Check TCM connector pin terminals for damage or loose connection with harness connector.
Is the inspection result normal?
YES
NO
>> Repair or replace damaged parts.
Component Inspection [Pressure Control Solenoid Valve A (Line Pressure Solenoid
Valve)]
INFOID:0000000003317835
1.
CHECK PRESSURE CONTROL SOLENOID VALVE A (LINE PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
Component Inspection [Pressure Control Solenoid Valve B (Secondary Pressure So-
lenoid Valve)]
INFOID:0000000003317836
1.
CHECK PRESSURE CONTROL SOLENOID VALVE B (SECONDARY PRESSURE SOLENOID VALVE)
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace transaxle assembly. Refer to
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
2
3.0 – 9.0
Ω
CVT unit connector
Ground
Resistance (Approx.)
Connector
Terminal
F24
3
3.0 – 9.0
Ω
Revision: 2008 October
2009 Murano
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