Nissan Note E12. Manual — part 653
TM-170
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
P0746 PRESSURE CONTROL SOLENOID A
4. Stop the vehicle.
5. Check the first trip DTC.
Is “P0746”detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009019952
1.
CHECK LINE PRESSURE SOLENOID VALVE
1. Turn ignition switch OFF.
2. Disconnect CVT unit connector.
3. Check line pressure solenoid valve. Refer to
TM-170, "Component Inspection (Line Pressure Solenoid
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair or replace malfunctioning parts.
2.
CHECK LINE PRESSURE
Perform line pressure test. Refer to
.
Is the inspection result normal?
YES >> Check
intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> Repair or replace malfunctioning parts.
Component Inspection (Line Pressure Solenoid Valve)
INFOID:0000000009019953
1.
CHECK LINE PRESSURE SOLENOID VALVE
Check resistance between CVT unit connector terminal and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> There is a malfunction of line pressure solenoid valve. Replace transaxle assembly. Refer to
250, "Removal and Installation"
.
CVT unit
—
Condition
Resistance
(Approx.)
Terminal
1
Ground
CVT fluid temperature: 20
°C (68°F)
5.3
Ω
CVT fluid temperature: 50
°C (122°F)
6.0
Ω
CVT fluid temperature: 80
°C (176°F)
6.7
Ω
P0846 TRANSMISSION FLUID PRESSURE SEN/SW B
TM-171
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P0846 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Logic
INFOID:0000000009019954
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
CAUTION:
Be careful of the driving speed.
1.
PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
1. Start the engine.
2. Shift the selector lever to “D” position.
3. Drive the vehicle at a constant velocity of 40 km/h (25 MPH) at lease for 10 seconds.
CAUTION:
At the same time, the accelerator pedal angle must be maintained constant.
4. Stop the vehicle.
5. Check the first trip DTC.
Is “P0846”detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009019955
1.
CHECK TCM INPUT SIGNAL
1. Start the engine.
2. Check voltage between TCM connector terminal and ground.
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0846
Transmission Fluid Pressure
Sensor/Switch B Circuit
Range/Performance
The detection conditions continuously for 5
seconds or more under the following diagno-
sis conditions:
• Diagnosis conditions
- Selector lever: “D” position
- The primary pulley speed experienced 306
rpm or more and the secondary pulley
speed experienced 230 rpm or more at
least once.
- Wheel spin is not being detected.
- The rate of change in pulley ratio: Between
−0.09 and +0.09 inclusive
- Solenoid valve output current: 750 mA or
more
- GND short diagnosis of the solenoid valve
circuit is not satisfied.
- TCM power supply voltage: More than 11 V
• Detection conditions
- After the value of “Actual secondary pres-
sure
− Target secondary pressure” exceeds
0.675 MPa:
• The rate of change in vehicle speed [km/h
(MPH)]: Between
−49 (−30) and +49 (+30)
inclusive
• The rate of change in accelerator pedal an-
gle: Between
−1.3/8 and +1.3/8 inclusive
• Secondary pressure sensor
• Control valve assembly
TM-172
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
P0846 TRANSMISSION FLUID PRESSURE SEN/SW B
Is the inspection result normal?
YES >> Check
intermittent incident. Refer to
GI-41, "Intermittent Incident"
.
NO
>> There is a malfunction of secondary pressure sensor value. Replace transaxle assembly. Refer to
TM-250, "Removal and Installation"
+
−
Condition
Voltage
TCM
Connector
Terminal
F44
16
Ground
• Selector lever: “N” position
• At idle
0.88 – 0.92 V
P0847 TRANSMISSION FLUID PRESSURE SEN/SW B
TM-173
< DTC/CIRCUIT DIAGNOSIS >
[CVT: RE0F11A]
C
E
F
G
H
I
J
K
L
M
A
B
TM
N
O
P
P0847 TRANSMISSION FLUID PRESSURE SEN/SW B
DTC Logic
INFOID:0000000009019956
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
PREPARATION BEFORE WORK
If another "DTC CONFIRMATION PROCEDURE" occurs just before, turn ignition switch OFF and wait for at
least 10 seconds, then perform the next test.
>> GO TO 2.
2.
CHECK DTC DETECTION
With CONSULT
1. Start the engine.
2. Select “Data Monitor” in “TRANSMISSION”.
3. Select “FLUID TEMP”.
4. Maintain the following conditions for 10 seconds or more.
5. Check the first trip DTC.
With GST
1. Start the engine and wait for at least 10 seconds.
CAUTION:
When the ambient temperature is
−20°C (−4°F) or less and the engine is cold, warm up the engine
for approximately 5 minutes.
2. Check the first trip DTC.
Is “P0847”detected?
YES
>> Go to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000009019957
1.
CHECK CIRCUIT BETWEEN TCM AND CVT UNIT (PART 1)
1. Turn ignition switch OFF.
2. Disconnect TCM connector and CVT unit connector.
3. Check continuity between TCM harness connector terminals and CVT unit harness connector terminals.
Is the inspection result normal?
DTC
Trouble diagnosis name
DTC detection condition
Possible causes
P0847
Transmission Fluid Pressure
Sensor/Switch B Circuit Low
The secondary pressure sensor voltage is
0.09 V or less continuously for 5 seconds or
more under the following diagnosis condi-
tions:
• Diagnosis conditions
- CVT fluid temperature:
−20°C (−4°F) or
more
- TCM power supply voltage: More than 11 V
• Harness or connector
(Secondary pressure sensor circuit is
open or shorted to ground)
• Secondary pressure sensor
• Control valve assembly
FLUID TEMP
:
−19°C (−2.2°F) or more
TCM
CVT unit
Continuity
Connector
Terminal
Connector
Terminal
F44
11
F46
18
Existed
16
14
26
22
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