Nissan Qashqai (2007-2010). Manual — part 581
![](/vehicle/qul/ene/roryboritele/peswh.png)
P0841 PRESSURE SENSOR FUNCTION
TM-259
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
3.
CHECK TRANSMISSION FLUID PRESSURE SENSOR B (PRIMARY PRESSURE SENSOR) SYSTEM
Check transmission fluid pressure sensor B (primary pressure sensor) system. Refer to
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Repair or replace damaged parts.
4.
CHECK LINE PRESSURE SOLENOID VALVE
Check line pressure solenoid valve. Refer to
TM-245, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair or replace damaged parts.
5.
CHECK SECONDARY PRESSURE SOLENOID VALVE
Check secondary pressure solenoid valve. Refer to
TM-251, "Component Inspection"
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> Repair or replace damaged parts.
6.
CHECK STEP MOTOR
Check step motor. Refer to
TM-277, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 7.
NO
>> Repair or replace damaged parts.
7.
CHECK TCM
Check TCM input/output signals. Refer to
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
NO
![](/vehicle/qul/ene/roryboritele/usef.png)
TM-260
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE
SENSOR)
Description
INFOID:0000000000988704
The transmission fluid pressure sensor B (primary pressure sensor) detects primary pressure of CVT and
sends TCM the signal.
DTC Logic
INFOID:0000000000988705
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
NOTE:
If “DTC CONFIRMATION PROCEDURE” has been previously performed, always turn ignition switch
OFF and wait at least 10 seconds before performing the next test.
After the repair, perform the following procedure to confirm the malfunction is eliminated.
1.
CHECK DTC DETECTION
With CONSULT-III
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR”.
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-39, "Intermittent Incident"
.
Diagnosis Procedure
INFOID:0000000000988706
1.
CHECK INPUT SIGNAL
1.
Start engine.
2.
Check voltage between TCM connector terminal and ground.
Is the inspection result normal?
YES
>> GO TO 6.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TCM AND TRANSMISSION FLUID PRESSURE SENSOR B (PRIMARY
DTC
Item
(CONSULT-III screen term)
Malfunction is detected when...
Possible cause
P0845
TR PRS SENS/B CIRC
Signal voltage of the transmis-
sion fluid pressure sensor B
(primary pressure sensor) is too
high or too low while driving.
• Transmission fluid pressure
sensor B (Primary pressure
sensor)
• Harness or connectors
(Sensor circuit is open or
shorted.)
ATF TEMP SEN
: 1.0 – 2.0 V
If 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
F25
14
“N” position idle
0.7 – 3.5 V
![](/vehicle/qul/ene/roryboritele/zatst.png)
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
TM-261
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
PRESSURE SENSOR)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector and CVT unit harness connector.
3.
Check continuity between TCM connector terminal and CVT unit harness connector terminal.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK SENSOR POWER AND SENSOR GROUND
1.
Connect TCM connector.
2.
Turn ignition switch ON.
3.
Check voltage between CVT unit harness connector terminals.
4.
Reinstall any part removed.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> GO TO 4.
4.
CHECK HARNESS BETWEEN TCM AND CVT UNIT HARNESS CONNECTOR (SENSOR POWER AND
SENSOR GROUND)
1.
Turn ignition switch OFF.
2.
Disconnect TCM connector.
3.
Check continuity between TCM connector terminals and CVT unit harness connector terminals.
4.
If OK, check harness for short to ground and short to power.
5.
Reinstall any part removed.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK THE TCM SHORT
Replace same type TCM, perform self-diagnosis check. Erase self-diagnostic results and then start engine
perform self-diagnosis check. Refer to
.
Is “P0845 TR PRS SENS/B CIRC” detected again?
YES
>> Replace the transaxle assembly. Refer to
.
NO
6.
CHECK TCM
Check TCM input/output signals. Refer to
.
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-39, "Intermittent Incident"
.
TCM connector
CVT unit harness connector
Continuity
Connector
Terminal
Connector
Terminal
F25
14
F24
25
Existed
CVT unit harness connector
Voltage (Approx.)
Connector
Terminal
F24
19
20
5.0 V
TCM connector
CVT unit harness connector
Continuity
Connector
Terminal
Connector
Terminal
F25
25
F24
19
Existed
26
20
TM-262
< COMPONENT DIAGNOSIS >
[CVT: RE0F10A]
P0845 TRANSMISSION FLUID PRESSURE SENSOR B (PRI PRESSURE SEN-
SOR)
NO
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